AKM AP1155ADL Spec Sheet

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AKM AP1155ADL Spec Sheet | Manualzz

[AP1155ADL]

AP1155ADL

Suitable for High Power application

Low Noise, Adjustable Voltage LDO Regulator

1. Genaral Description

The AP1155ADL is a low dropout linear regulator with ON/OFF control, which can supply 1A load current.

The

AP1155ADL is housed in HSOP-8 with Exposed-Pad package, and therefore suitable for high power application.

The AP1155ADL realizes high ripple rejection and low noise, because silicon monolithic bipolar structure is adopted. The suitable voltage for the set can be set from 1.3V to 13.5V by external resistors. The AP1155ADL realizes to downsize Printed Circuit Board, because the input and output capacitor is available to use a small ceramic capacitor. Also over-current protection circuit and thermal shut down are integrated. These functions will improve reliability of the system.

2. Features

Operating Temperature Range

Operating Voltage Range

Output Current

Programmable Output Voltage

Reference Voltage Precision

Dropout Voltage

Ripple Rejection Ratio

Available very low noise application

-40

2.4

1A

1.3

85

°

C

14.0V

13.5V

1.21V ± 35mV

300mV at Iout=1A

80dB at 1kHz

Available to use a small ceramic capacitor

On/Off control (High active)

Built-in Over Current Protection, Thermal Shutdown Protection

Package HSOP-8pin with Exposed-Pad

3. Applications

RF Power Supplies

Low Noise Imaging Equipment

PLL, VCO, Mixers, LNA

Digital Camera

High Speed/High Precision A-D, D-A, Amplifier Audio Equipment

Medical Equipment

Instrumentation

Precision Power Supplies

Post Regulator for Switching Supplies

Car Infotainment

016001036-E-02 - 1 - 2018/03

[AP1155ADL]

4. Table of Contents

1. Genaral Description ........................................................................................................................................... 1

2. Features .............................................................................................................................................................. 1

3. Applications ....................................................................................................................................................... 1

4. Table of Contents ............................................................................................................................................... 2

5. Block Diagram ................................................................................................................................................... 3

6. Ordering Information ......................................................................................................................................... 3

7. Pin Configurations and Functions ...................................................................................................................... 3

Pin Configurations ............................................................................................................................................ 3

Function ............................................................................................................................................................ 4

8. Absolute Maximum Ratings .............................................................................................................................. 5

9. Recommended Operating Conditions ................................................................................................................ 5

10. Electrical Characteristics .................................................................................................................................... 6

Electrical Characteristics of Ta=Tj=25

°

C ........................................................................................................ 6

Electrical Characteristics of Ta=-40

°

C~85

°

C .................................................................................................. 6

11. Description ......................................................................................................................................................... 7

11.1 DC Characteristics ......................................................................................................................................... 7

11.2 Load Transient ............................................................................................................................................. 11

11.3 Line Transient .............................................................................................................................................. 12

11.4 On / Off Transient ....................................................................................................................................... 13

11.5 Ripple Rejection .......................................................................................................................................... 14

11.6 Output Noise ................................................................................................................................................ 15

11.7 Stability ........................................................................................................................................................ 16

11.8 Operating Region and Power Dissipation ................................................................................................... 17

12. Definition of term............................................................................................................................................. 18

13. Recommended External Circuits ..................................................................................................................... 19

V

Out,TYP

=3.0V: Example of selection of external components. ...................................................................... 19

Recommended Layout .................................................................................................................................... 19

Test Circuit ..................................................................................................................................................... 20

14. Package ............................................................................................................................................................ 21

Outline Dimensions ........................................................................................................................................ 21

15. Revise History .................................................................................................................................................. 22

IMPORTANT NOTICE .......................................................................................................................................... 23

016001036-E-02 - 2 - 2018/03

5. Block Diagram

V

Cont

FB

On/Off

Control

Thermal &

Over Current

Protection

V

Ref

V

In

GND

Figure 1.

Block Diagram

6. Ordering Information

AP1155ADL Ta = -40 to 85°C HSOP-8

7. Pin Configurations and Functions

Pin Configurations

(Top View)

8

7

6

Exposed Pad

5

1 2

3 4

V

Out

[AP1155ADL]

016001036-E-02 - 3 - 2018/03

Function

Pin Number

1,5,8

2

3

4

6

7

-

Symbol

NC

V

Out

FB

GND

V

V

Cont

In

Exposed

Pad

[AP1155ADL]

Internal Equivalent Circuit

-

V

In

FB

-

V

Out

Description

Non connection Terminal

Output Terminal

Connect resistance R

1

between V

Out terminal and Fb terminal, and resistance R

2

between Fb terminal and

GND.

Output voltage V

Out,TYP

is determined by the following equation:

V

Out, TYP

=

V

Fb

×

R

1

+

R

2

R

2

Connect a ceramic capacitor with a capacitance higher than the following values between V

Out

terminal and

GND.

V

Out,TYP

2.4V : 1

μ

F

V

Out,TYP

< 2.4V : 2.2

μ

F

Feedback Terminal

Connecting a capacitor between V

Out terminal and Fb terminal reduces output noise.

This terminal features very high impedance; please note that it is susceptible to external noise, etc.

GND Terminal

V

Cont

300k

500k

On/Off control Terminal

The On/Off voltages are as follows:

V

Cont

1.8V : V

Out

On state

V

Cont

0.35V : V

Out

Off state

Pull-down resistance (500k

) is built-in.

-

-

Input Terminal

Connect a capacitor of 1

µ

F or higher between V

In

terminal and GND.

Ground Terminal

Heat dissipation pad

Exposed Pad must be connected to

GND.

016001036-E-02 - 4 - 2018/03

[AP1155ADL]

8. Absolute Maximum Ratings

Parameter

Input Voltage

Reverse Bias Voltage

FB Terminal Voltage

Control Voltage

Symbol

V

In,MAX

V

Rev,MAX

V

FB,MAX

V

Cont,MAX min

-0.4

-0.4

-0.4

-0.4

Max

16

14

5

16

Unit

V

V

V

V

Condition

V

Out

-V

In

Junction temperature Tj - 150

°

C

Storage Temperature Range T

Stg

-55 150

°

C

Power Dissipation P

D

- 2300 mW

Ta=25

°

C

Note 1. A 2-layer board is used

(x=30mm, y=30mm,t=1.0mm)

. R

θ

JA

= 50

°

C/W.

( Note 1 )

Please refer to Section 11.8 on page 17 for more information.

WARNING: The maximum ratings are the absolute limitation values with the possibility of the IC breakage.

When the operation exceeds this standard quality cannot be guaranteed.

9. Recommended Operating Conditions

Parameter Symbol min typ max Unit Condition

Operating Temperature Range Ta -40 - 85

°

C

V

OP

V

Out

Operating Voltage Range

Output Voltage Range

2.4

1.3

-

-

14.0

13.5

V

V

016001036-E-02 - 5 - 2018/03

[AP1155ADL]

10. Electrical Characteristics

Electrical Characteristics of Ta=Tj=25

°

C

The parameters with min or max values will be guaranteed at T a

=T j

=25°C.

(V

I n

=4.0V, R1=53k

, R2=36k

, Vcont=1.8V, Ta=Tj=25

°

C, unless otherwise specified.)

Fb voltage

Parameter

Line Regulation

Symbol Condition

V

FB

I

Out

=5mA

LinReg

V

In

=5V, I

Out

=5mA min typ max Unit

1.185 1.210 1.245 V

- 0 10 mV

Load Regulation (Note 2)

Dropout Voltage (Note 3)

LoaReg

V

Drop

I

Out

=5~500mA

I

Out

=5~1000mA

I

Out

=500mA

I

Out

=1000mA

-

-

-

-

6

20

150

300

20

35

260

490 mV mV

Maximum Output Current

(Note 4)

Output Short-Circuit Current

Quiescent Current

Standby Current

Control Current

I

Out,Max

V

Out

=V

Out,TYP

×

0.9

I

Short

V

Out

=0V

Iq I

Out

=0mA

I

Standby

V

Cont

=0V

I

Cont

V

Cont

=1.8V

1100 1400 1700 mA

-

-

-

-

1500

300

-

5

-

480

0.1

10 mA

μA

μA

μ

A

V

Out

On state 1.8 - - V

Control Voltage V

Cont

V

Out

Off state - - 0.35 V

Note 2. Load Regulation changes with output voltage. The value mentioned above is guaranteed with the condition at V

Note 3. For V

Out,TYP

Out,TYP

=3.0V (R

1

=53k

, R

2

=36k

2.0V , no regulations.

). The standard value is displayed by the absolute value.

Note 4. The maximum output current is limited by power dissipation

Note 5. Parameters with only typical values are just reference. (Not guaranteed)

Electrical Characteristics of Ta=-40

°

C~85

°

C

The parameters with min or max values will be guaranteed at T a

= -40 ~ 85

°

C.

(V

I n

=4.0V, R1=53k

, R2=36k

, Vcont=1.8V, Ta= -40 ~ 85

°

C, unless otherwise specified.)

Fb voltage

Parameter min typ max Unit

1.175 1.210 1.255 V

Line Regulation

Load Regulation (Note 6)

Dropout Voltage (Note 7)

Symbol Condition

V

FB

I

LinReg

Out

V

=5mA

In

=5V, I

Out

=5mA

I

Out

=5~500mA

LoaReg

V

Drop

I

Out

=5~1000mA

I

Out

=500mA

I

Out

=1000mA

-

-

-

-

-

0

6

20

150

300

16

37

95

335

550 mV mV mV

Maximum Output Current

(Note 8)

Output Short-Circuit Current

Quiescent Current

Standby Current

Control Current

I

Out,Max

V

Out

=V

Out,TYP

×

0.9

I

Short

V

Out

=0V

Iq I

Out

=0mA

I

Standby

V

Cont

=0V

I

Cont

V

Cont

=1.8V

-

-

-

-

1400

1500

300

-

5

-

-

585

1.5

15 mA mA

μA

μA

μ

A

V

Out

On state 1.8 - - V

Control Voltage V

Cont

V

Out

Off state - - 0.35 V

Note 6. Load Regulation changes with output voltage. The value mentioned above is guaranteed with the condition at V

Out,TYP

=3.0V (R

1

=53k

, R

2

=36k

). The standard value is displayed by the absolute value.

Note 7. For V

Out,TYP

2.0V , no regulations.

Note 8. The maximum output current is limited by power dissipation

Note 9. Parameters with only typical values are just reference. (Not guaranteed)

016001036-E-02 - 6 - 2018/03

[AP1155ADL]

11.1

DC Characteristics

V

Out

vs V

In

(AP1155ADL)

10

0

-10

-20

-30

0 2 4 6 8 10 12 14 16

V

In

[V]

I

Q

vs V

In

(AP1155ADL)

12

10

8

6

4

2

0

0 2 4 6 8 10 12 14 16

V

In

[V]

V

Out

vs I

Out

(AP1155ADL)

20

10

0

-10

50

40

30

-20

-30

-40

-50

0 200 400 600

I

Out

[mA]

800 1000

11. Description

V

Out

vs V

In

(AP1155ADL)

100

I

Out

= 0mA 600mA

(100mA step)

0

-100

-200

-300

-100 0 100 200 300 400 500

V

In

- V

Out

[mV]

I

Q

vs V

In

(AP1155ADL)

350

340

330

320

310

300

290

280

270

260

250

0 2 4 6 8 10 12 14 16

V

In

[V]

I

GND

vs I

Out

(AP1155ADL)

50

45

40

35

30

25

20

15

10

5

0

0 200 400 600

I

Out

[mA]

800 1000

016001036-E-02 - 7 - 2018/03

V

Drop

vs I

Out

(AP1155ADL)

0

-50

-100

-150

-200

-250

-300

-350

0 200m 400m 600m 800m 1000

I

Out

[mA]

V

Out

vs I

Out

(AP1155ADL)

4

3

2

1

0

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

I

Out

[A]

V

Out

vs V

Cont

(AP1155ADL)

4

3

2

1

0

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

V

Cont

[V]

[AP1155ADL]

V

Drop

vs I

Out

(AP1155ADL)

0

-50

-100

-150

-200

-250

-300

-350

0 200 400 600

I

Out

[mA]

I

Cont

vs V

Cont

(AP1155ADL)

100

800 1000

75

50

25

0

0 2 4 6 8 10 12 14 16

I

Standby

vs V

In

(AP1155ADL)

1

µ

100n

V

Cont

[V]

10n

1n

100p

10p

1p

0 2 4 6 8 10 12 14 16

V

In

[V]

016001036-E-02 - 8 - 2018/03

V

Out

vs T a

(AP1155ADL)

30

20

10

0

-10

-20

-30

-40 -20 0 20 40 60 80 100

T a

[°C]

LoaReg vs T a

(AP1155ADL)

60

50

40

30

20

10

0

-10

-40 -20

I

Out

= 100mA, 200mA, 400mA,

600mA, 800mA, 1000mA

0 20 40 60 80 100

T a

[°C]

V

Drop

vs T a

(AP1155ADL)

0

-100

-200

-300

-400

-500

I

Out

-600

-40 -20

= 100mA, 200mA, 400mA,

600mA, 800mA, 1000mA

0 20 40 60 80 100

T a

[°C]

016001036-E-02 - 9 -

[AP1155ADL]

I

Q

vs T a

(AP1155ADL)

400

380

360

340

320

300

280

260

240

220

200

-40 -20 0 20 40 60 80 100

T a

[°C]

I

GND

vs T a

(AP1155ADL)

80

70

60

50

40

30

20

10

0

-40 -20

I

Out

= 100mA, 200mA, 400mA,

600mA, 800mA, 1000mA

0 20 40 60 80 100

T a

[°C]

V

Drop

vs T a

(AP1155ADL)

0

-100

-200

-300

-400

-500

I

Out

-600

-40 -20

= 100mA, 200mA, 400mA,

600mA, 800mA, 1000mA

0 20 40 60 80 100

T a

[°C]

2018/03

V

Out

On/Off Point vs T a

(AP1155ADL)

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

-40 -20

V

Out

Off Point

0 20

V

Out

On Point

40 60 80 100

T a

[°C]

I

Out,MAX

vs T a

(AP1155ADL)

1500

1450

1400

1350

1300

1250

1200

-40 -20 0 20 40 60 80 100

T a

[°C]

[AP1155ADL]

I

Cont

vs T a

(AP1155ADL)

25

20

V

Cont

= 1.8V, 2.0V, 3.0V, 4.0V

15

10

5

0

-40 -20 0 20 40 60 80 100

T a

[°C]

Reverse Bias Current(I

Rev

) vs T a

(AP1155ADL)

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

-40 -20 0 20

V

Rev

= 3.0V

V

In

=0.0V

V

Cont

=0.0V

40 60 80 100

T a

[°C]

016001036-E-02 - 10 - 2018/03

[AP1155ADL]

11.2 Load Transient

I

Out

=0mA

1000mA, C

Out

=1.0

µ

F, 2.2

µ

F, 4.7

µ

F

I

Out

V

Out

1000mA

0mA

C

Out

= 1.0

µ

F C

Out

= 4.7

µ

F

1000mA/div

200mV/div

I

Out

=1000mA

0mA, C

Out

=1.0

µ

F, 2.2

µ

F, 4.7

µ

F

1000mA

1000mA/div

0mA

500mV/div

10

µ sec/div

Time

I

Out

=0mA

500mA, 0mA

1000mA

I

Out

V

Out

0mA

1000mA (500mA)

I

Out

= 0mA I

Out

= 1000mA

1000mA/div

(500mA/div)

I

Out

= 0mA I

Out

= 500mA

200mV/div

C

Out

= 1.0

µ

F C

Out

= 4.7

µ

F

5msec/div

Time

I

Out

=500mA

0mA, 1000mA

0mA

I

Out

1000mA (500mA)

0mA

10

µ sec/div

Time

I

Out

=0mA

1000mA, 10mA

1010mA

I

Out

1000mA (1010mA)

0mA (10mA)

I

Out

= 0mA I

Out

= 1000mA

1000mA/div

V

Out

I

Out

= 10mA I

Out

= 1010mA

200mV/div

V

Out

I

Out

= 1000mA I

Out

= 0mA

500mV/div

I

Out

= 500mA I

Out

= 0mA

5msec/div

Time

I

Out

=1000mA

0mA, 1010mA

10mA

I

Out

1000mA (1010mA)

0mA (10mA)

1000mA/div

V

Out

1000mA/div

(500mA/div)

I

Out

= 1000mA I

Out

= 0mA

200mV/div

10

µ sec/div

Time

I

Out

= 1010mA I

Out

= 10mA

5msec/div

Time

016001036-E-02 - 11 - 2018/03

11.3 Line Transient

I

Out

=100mA, 500mA, 1000mA

V

In

5V

4V

I

Out

= 100mA, 500mA, 1000mA

1V/div

V

Out

10mV/div

[AP1155ADL]

C

Out

=1.0

µ

F, 2.2

µ

F, 4.7

µ

F

5V

V

In

4V

C

Out

= 1.0

µ

F, 2.2

µ

F, 4.7

µ

F

1V/div

V

Out

10mV/div

1msec/div

Time

C

Fb

=none, 1000pF, 0.1

µ

F

5V

V

In

4V

C

FB

= none C

FB

= 0.1

µ

F

1V/div

V

Out

10mV/div

1msec/div

Time

1msec/div

Time

016001036-E-02 - 12 - 2018/03

[AP1155ADL]

11.4 On / Off Transient

V

Cont

=0.0V

2.0V, C

Out

=1.0

µ

F, 4.7

µ

F, 10

µ

F

V

Cont

0V

2V

2V/div

V

Cont

=2.0V

0.0V, C

Out

=1.0

µ

F, 4.7

µ

F, 10

µ

F

2V

V

Cont

2V/div

0V

V

Out

1V/div

V

Out

1V/div

C

Out

= 1.0

µ

F, 4.7

µ

F, 10

µ

F

5

µ sec/div

Time

V

Cont

=0.0V

2.0V, I

Out

=100mA, 500mA, 1000mA

C

Out

= 10

µ

F, 4.7

µ

F, 1.0

µ

F

250

µ sec/div

Time

V

Cont

=2.0V

0.0V, I

Out

=100mA, 500mA, 1000mA

V

Cont

2V

0V

I

Out

= 100mA, 500mA, 1000mA

2V/div

V

Cont

2V

0V

2V/div

V

Out

1V/div

V

Out

1V/div

5

µ sec/div

Time

V

Cont

=0.0V

2.0V, C

Fb

=none~0.1

µ

F

*

2V

V

Cont

0V

V

Out

C

Fb

= none C

Fb

= 0.1

µ

F

2V/div

I

Out

= 100mA, 500mA, 1000mA

25

µ sec/div

Time

V

Cont

=0.0V

2.0V, C

Fb

=none~0.1

µ

F

*

2V

V

Cont

0V

2V/div

1V/div V

Out

1V/div

C

Fb

= none C

Fb

= 0.1

µ

F

5

µ sec/div

Time

2.5msec/div

Time

C

Fb

=none, 100pF, 1000pF, 0.001

µ

F, 0.01

μ

F, 0.1

μ

F

016001036-E-02 - 13 - 2018/03

11.5 Ripple Rejection

I

Out

=100mA, 200mA, 500mA, 1000mA

0

-20

-40

-60

-80

-100

100

I

Out

= 100mA, 200mA, 500mA, 1000mA

1k 10k 100k 1M

Frequency [Hz]

C

Fb

=none, 0.1

µ

F

0

-20

-40

-60

C

Fb

= none

-80

-100

100

C

Fb

= 0.1

µ

F

1k 10k

Frequency [Hz]

100k 1M

[AP1155ADL]

C

Out

=1.0

μ

F, 2.2

µ

F, 4.7

µ

F, 10

μ

F

0

-20

-40

-60

-80

-100

100 1k 10k

Frequency [Hz]

I

Out

=1mA~1000mA, f=1kHz

0

C

Out

= 1.0

µ

F

C

Out

= 10

µ

F

100k 1M

-20

-40

-60

-80

-100

0 200 400 600

I

Out

[mA]

800 1000

016001036-E-02 - 14 - 2018/03

11.6 Output Noise

V

Out,TYP

=3.0V, I

Out

=0.1mA~1000mA

120

100

80

60

40

20

0

0 200 400 600

V

Out,TYP

=1.3V ~ 12V

250

I

Out

[mA]

800 1000

200

150

100

50

0

0 2 4 6 8

V

Out,TYP

[V]

10 12 14

[AP1155ADL]

V

Out,TYP

=3.0V, C

Fb

=1pF~0.1

μ

F

100

80

60

40

20

0

1p 10p 100p 0.001

µ

0.01

µ

0.1

µ

C

Fb

[F]

016001036-E-02 - 15 - 2018/03

[AP1155ADL]

11.7 Stability

The standard capacitor recommended for use on the output side is a ceramic capacitor equal to or greater than

1.0

µ

F. For operations at 2.4V or less, use at least a 2.2

µ

F capacitor.

100

10

1

Unstable Area

0.1

Stable Area

0.01

0 200 400 600 800 1000

I

Out

[mA]

Figure 2. Stable operation area when V

Out,TYP

=3.0V

The above graph indicates that operation is stable in the entire current range with a resistance of 1

or less

(equivalent series resistance or ‘ESR’) connected in series to the output capacitor. Generally, the ESR of a ceramic capacitor is very low (several tens of m

), and no problems should arise in actual use. If an application requires use of a large ESR capacitor, connecting a ceramic capacitor with low ESR in parallel will enable operations at this level. When parallel output capacitors are used, be sure to position the ceramic capacitor as close to the IC as possible. The other capacitor connected in parallel may be located away from the IC. The IC will not be damaged by the increased capacitance. Input capacitors are necessary when the power supply impedance increases due to battery depletion or when the line to the power supply is particularly long. There is no general rule that can be used to determine the required number of capacitors used for such purposes. In some cases, only one capacitor is necessary for several regulator ICs. In some cases, one capacitor is required for each IC. To determine the required number of capacitors in a specific application, be sure to verify operation with all parts in the installed configuration.

Capacitance vs Voltage

100

90

80

70

60

50

F Curve

B Curve

0 2 4 6 8

Bias Voltage(V)

10 12

Capacitance vs Temperature

100

90

80

70

60

50

F Curve

B Curve

-50 -25 0 25 50 75 100

Ta(°C)

Figure 3. General characteristics of ceramic capacitors

Ceramic capacitors normally have specific temperature and voltage characteristics. Be sure to take the operating voltage and temperature into consideration when selecting parts for use. We recommend parts featuring B characteristics.

For evaluation

Kyocera : CM05B104K10AB , CM05B224K10AB ,CM105B104K16A ,CM105B224K16A ,CM21B225K10A

Murata : GRM36B104K10 , GRM42B104K10 ,GRM39B104K25 , GRM39B224K10 , GRM39B105K6.3

016001036-E-02 - 16 - 2018/03

[AP1155ADL]

11.8 Operating Region and Power Dissipation

Power dissipation capability is limited by the junction temperature that triggers the built-in overheat protection circuit. Therefore, power dissipation capability is regarded as an internal limitation. The package itself does not offer high heat dissipation because of its small size. The package is, however, designed to release heat effectively when mounted on the PCB. Therefore, the heat-dissipation value will vary depending on the material, copper pattern, etc. of the PCB on which the package is mounted.

When the regulator loss is large (high ambient temperature, poor heat radiation), the overheat protection circuit is activated. When this occurs, output current cannot be obtained, and an output voltage drop is observed. When the junction temperature reaches the set value, the IC stops operating. However, after the IC has stopped operation and the junction temperature lowers sufficiently, the IC restarts operation immediately.

How to determine the thermal resistance when installation on PCB

The chip junction temperature during operation is expressed by

T j

= θ ja

×

P

D

+

25

The junction temperature of the AP1155ADL is limited to approximately 140

°

C by the overheat protection circuit. P

D

is the value observed when the overheat protection circuit is activated. The following example is based on an ambient temperature of 25

°

C.

140

= θ ja

×

P

D

+

25

θ ja

×

P

D

+

25

=

1 40

θ ja

×

P

D

=

115

θ

ja

=

115

(°C/W)

P

D

Glass epoxy substrate with double-layer wiring

(x=30mm, y=30mm, t=1.0mm, copper pattern thickness: 35

µ m)

P

D

is 2300mW. If the temperature exceeds 25

°

C, be sure to derate at -20mW/

°

C.

P

D

is easily calculated.

With the output terminal shorted-circuited to GND, gradually increase the input voltage and measure the input current. Slowly increase the input voltage to about 10V. The initial input current value becomes the maximum instantaneous output current value, but gradually lowers as the chip temperature rises, and ultimately reaches a state of thermal equilibrium (through natural air cooling). P

D

is calculated using the input value for input current and the input voltage value in the equilibrium state.

P

D

V

In

×

I

In

Procedure

P

D

2

(conducted at the time of installation on PCB)

1: Obtain P

D

( V

In

×

I

In

when output is short-circuited).

2: Plot P

D

on the 25

°

C line.

3: Draw a straight line between P

D

and the 140

°

C line.

DP

D

0

5

25 75

4

T

A

(

)

3

140

4: Extend a straight-line perpendicular from the point of the designed maximum operating temperature (for example, 75

°

C).

5: Extend a line to the left from the intersection of the derating curve and the line drawn in 4, and read the P value (this value is DP

6: DP

D

÷

(V

In, MAX

The maximum operating current at the maximum temperature is as follows:

I

Out

{DP

D

÷

(V

In, MAX

V

Out

)}

×

D

).

V

Out

)

=

I

Out

at 75

°

C

D

Try to achieve maximum heat dissipation in your design in order to minimize the part’s temperature during operation. Generally speaking, lower part temperatures result in higher reliability in operation.

016001036-E-02 - 17 - 2018/03

[AP1155ADL]

12. Definition of term

Characteristics

Output Voltage (V

Out

)

The output voltage is specified with V

In

=V

Out,TYP

+1V and I

Out

=5mA.

Output Current (I

Out

)

Output current, which can be used continuously (It is the range where overheating protection of the IC does not operate).

Maximum output current (I

Out,Max

)

The rated output current is specified under the condition where the output voltage drops 0.9V times the value specified with I

Out

=5mA by increasing the output current. The input voltage is set to V

OutTYP

+1V and the current is pulsed to minimize temperature effect.

Dropout Voltage (V

Drop

)

It is the difference between the input voltage and the output voltage when the circuit stops the stable operation by decreasing the input voltage. It is measured when the output voltage drops 100mV from its nominal value by decreasing the input voltage gradually.

Line Regulation (LinReg)

It is the fluctuations of the output voltage value when the input voltage is changed.

Load Regulation (LoaReg)

It is the fluctuations of the output voltage value when the input voltage is assumed to be V

Out,TYP

+1V, and the output current is changed.

Ripple Rejection (RR)

Ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output.

It is measured with the condition of V

In

=V

Out,TYP

+1.5V. Ripple rejection is the ratio of the ripple content between the output vs. input and is expressed in dB

Standby Current (I

Standby

)

Standby current is the current which flows into the regulator when the output is turned off by the control function (V

Cont

=0V).

Protections

Over Current Protection

It is an function to protect the IC by limiting the output current when excessive current flows to IC, such as the output is connected to GND, ets.

Thermal Protection

It protects the IC not to exceed the permissible power consumption of the package in case of large power loss inside the regulator. The output is turned off when the chip reaches around 140°C, but it turns on again when the temperature of the chip decreases.

ESD

MM: 200pF 0

200V or over

HBM: 100pF 1.5k

2000V or over

016001036-E-02 - 18 - 2018/03

13. Recommended External Circuits

V

Out,TYP

=3.0V: Example of selection of external components.

[AP1155ADL]

Vcont

1.8~14V

R2

36kΩ

Cin

1uF

Vout

Figure 4. External Circuit

The output voltage value V

Out,TYP

is determined using the following equation:

V

Out, TYP

=

R

1

+

R

1

R

2

×

V

FB

(

1 .

21

V

)

The minimum required current through resistance R

1

, R

2 is 30

µ

A, which is determined by

V

FB

R

1

.

Only a ceramic capacitor should be used for C

C

In

, use capacitors rated at 1

µ

Out

. For C

In

any type of capacitor may be selected. For C

F or higher. For details, refer to 11.7 Stability.

Out

and

The Fb terminal has high impedance and is therefore susceptible to external noise, etc. Connecting capacitor

C

Fb

between the V

Out

terminal and the Fb terminal minimizes the effects of external noise and also reduces output noise.

Recommended Layout

Cin should be located as close as possible to V in

pin and GND.

Cout should be located as close as possible to V

OUT

pin and

GND.

Feedback resistor R1, R2 should be placed as close as possible to the FB terminal.

When connecting Vout and R2, please wiring from "+" terminal of Cout.

Cfb should be located as close as possible to V

OUT

pin and FB pin.

GND plane should be large as much as possible.

Exposed Pad is the ground and sharing of the IC.

Exposed Pad must be connected to GND.

Via hall is effective to heat dissipation to each layer of PCB.

Figure 5. Recommended Layout

016001036-E-02 - 19 - 2018/03

[AP1155ADL]

Test Circuit

Test circuit for DC characteristics

V

In

A

I

In

C

In

V

In

V

Out

R

1

C

Fb

C

Out

V

V

Out

V

Cont

A

V

Cont

I

Cont

GND

Fb

R

2

I

Out

Test circuit for Load Transient

V

In

V

Out

V

In

C

In

R

1

V

Cont

V

Cont

GND

Fb

R

2

I

Out

C

Out

10Hz

Test circuit for Line Transient

V

In

V

In

V

Out

C

In

R

1

V

Cont

V

Cont

GND

Fb

R

2

Test circuit for On/Off Transient

V

In

V

Out

V

In

C

In

R

1

C

Fb

C

Out

V

Cont

V

Cont

GND

Fb

R

2

I

Out

Test circuit for Ripple Rejection

C

Fb

C

Out

I

Out

V

In

V

Out

V

In

V

Rippple

=

500mV p-p

R

1

C

Fb

C

Out

I

Out

V

Cont

V

Cont

GND

Fb

R

2

Test circuit for Output Noise

V

In

V

Out

V

In

C

In

R

1

V

Cont

V

Cont

GND

Fb

R

2

C

Fb

C

Out

I

Out

V

V

Noise

V

Out,TYP

=3.0V(R

1

=53k

, R

2

=36k

)

V

C

In

=1.0

µ

F(Tantalum), C

C

In

=4.0V, V

Cont

=1.8V, I

Out

=1.0

µ

F(Ceramic), T

Out

Fb

=5mA

=0.001

µ

F(Ceramic), a

=25°C

V

Out,TYP

=3.0V(R

1

=53k

, R

2

=36k

)

V

C

In

In

=4.0V, V

Cont

=1.8V

=1.0

µ

F(Tantalum), T a

=25°C

V

Out,TYP

=3.0V(R

1

=53k

, R

2

=36k

)

V

In

=4.0V

5.0V(100Hz), V

C

In

=1.0

µ

F(Tantalum), C

Fb

Cont

=1.8V, I

=none, T a

Out

=100mA

=25°C

V

Out,TYP

=3.0V(R

1

=53k

, R

2

=36k

)

V

In

=4.0V, V

Cont

=0.0V

2.0V(10Hz), I

C

In

=1.0

µ

F(Tantalum), C

Fb

=none, T a

Out

=100mA

=25°C

V

Out,TYP

=3.0V(R

1

=53k

, R

2

=36k

)

V

In

=4.5V, V

Cont

=2.0V, V

Ripple

=500mV p-p

,

I

Out

=100mA

C

In

=none, C

Fb

=none, T a

=25°C

R

2

=36k

V

In

=V

Out,TYP

+1.0V, V

Cont

=2.0V, I

Out

=100mA

BPF=400Hz~80kHz

C

In

=C

Out

=1.0

µ

F(Ceramic), C

Fb

=none, T a

=25°C

016001036-E-02 - 20 - 2018/03

Outline Dimensions

(Unit:mm)

14. Package

[AP1155ADL]

016001036-E-02 - 21 - 2018/03

[AP1155ADL]

15. Revise History

Date

(YY/MM/DD)

15/12/25

16/01/19

18/03/07

Revision Page Contents

00

01

02

-

1

1

19

21

First Edition

Added a Recommend Circuit to “2.Features”.

Fixed “3.Applications”.

Added a Recommend Layout to “13. Recommended External

Circuits”.

“14. Package" Package Dimensions Body Size Correction

4.4x4.9mm

4.4x5.2mm

016001036-E-02 - 22 - 2018/03

[AP1155ADL]

IMPORTANT NOTICE

0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of

AKM product stipulated in this document (“Product”), please make inquiries the sales office of

AKM or authorized distributors as to current status of the Products.

1. All information included in this document are provided only to illustrate the operation and application examples of AKM Products. AKM neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of AKM or any third party with respect to the information in this document. You are fully responsible for use of such information contained in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR

ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH

INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS.

2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact, including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. Do not use Product for the above use unless specifically agreed by AKM in writing.

3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible for complying with safety standards and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption.

4. Do not use or otherwise make available the Product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). When exporting the Products or related technology or any information contained in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations.

The Products and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations.

5. Please contact AKM sales representative for details as to environmental matters such as the RoHS compatibility of the Product. Please use the Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations.

6. Resale of the Product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by AKM for the Product and shall not create or extend in any manner whatsoever, any liability of AKM.

7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of AKM.

016001036-E-02 - 23 - 2018/03

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