STMicroelectronics STMPS2272 Datasheet

STMPS2242, STMPS2252

STMPS2262, STMPS2272

Enhanced dual-channel power switches

Features

■

■

■

■

■

■

■

■

■

■

■

■

■

100 m Ω high-side MOSFET switch

500 mA/1000 mA continuous current per channel

Thermal protection

Independent short-circuit protection with overcurrent logic output

Operating range from 2.7 V to 5.5 V

CMOS and TTL compatible inputs

2.5 ms typical rise time

Undervoltage lockout

13 µA maximum standby supply current

Ambient temperature range: -40 °C to 85 °C

8 kV ESD protection

Reverse current protection

Fault blanking

SO-8

MSOP8

Description

The STMPS2242/2252/2262/2272 power distribution switches are intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. These devices incorporate 100 m Ω MOSFET high-side power switches for power distribution systems that require multiple power switches in a single package.

Table 1.

SO-8

Device summary

Order code

MSOP8

(1)

STMPS2242MTR

STMPS2252MTR

STMPS2262MTR

STMPS2272MTR

STMPS2242TTR

STMPS2252TTR

STMPS2262TTR

STMPS2272TTR

1.

MSOP8 is also known as TSSOP8.

Current limit

(mA)

500

500

1000

1000

Each switch is controlled by an independent logic enable input. When the output load exceeds the current limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present.

Enable

Active low

Active high

Active low

Active high

Packing

Tape and reel

Tape and reel

Tape and reel

Tape and reel

January 2011 Doc ID 15050 Rev 3 1/42 www.st.com

42

5

6

1

2

3

Contents

Contents

4

7

8

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1

Fault blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2

Overcurrent/overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3

Reverse current blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.4

UVLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1

Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2

Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6.1

STMPS2242, STMPS2252 characteristics . . . . . . . . . . . . . . . . . . . . . . . . 13

6.1.1

6.1.2

6.1.3

Turn-on/off characteristics for V

I

= 3 V, R

LOAD

= 6 Ω . . . . . . . . . . . . . . . 13

Turn-on/off characteristics for V

I

= 5 V, R

LOAD

= 10

Ω

. . . . . . . . . . . . . . 16

UVLO characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.1.4

6.1.5

Overcurrent protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.2

STMPS2262, STMPS2272 characteristics . . . . . . . . . . . . . . . . . . . . . . . . 24

6.2.1

6.2.2

6.2.3

Turn-on/off characteristics for V

I

= 3 V, R

LOAD

= 3 Ω . . . . . . . . . . . . . . . 24

Turn-on/off characteristics for V

I

= 5 V, R

LOAD

= 5 Ω . . . . . . . . . . . . . . . 27

UVLO characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.2.4

6.2.5

Overcurrent protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.1

Input and output capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

9

Contents

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Doc ID 15050 Rev 3 3/42

List of tables

List of tables

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Current limit characteristics

(V

I

= 5.5 V, I

O

= rated current, T

Supply current characteristics

J

= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 10

Table 7.

Table 8.

(V

I

= 5.5 V, I

O

= rated current, T

Thermal characteristics

J

= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 11

(V

I

= 5.5 V, I

O

= rated current, T

UVLO characteristics

J

= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 11

Table 9.

(V

I

= 5.5 V, I

O

= rated current, T

Table 10.

OCx pin characteristics

J

= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12

(V

I

= 5.5 V, I

O

= rated current, T

Table 11.

ENx pin characteristics

J

= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12

(V

I

= 5.5 V, I

O

= rated current, T

J

= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12

Table 12.

SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 13.

MSOP8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Table 14.

Reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Table 15.

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

List of figures

List of figures

Figure 1.

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2.

Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3.

Turn-on for C

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 4.

Turn-on for C

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 5.

Turn-on for C

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 6.

Turn-off for C

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 7.

Turn-off for C

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 8.

Turn-off for C

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 9.

Turn-on for C

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 10.

Turn-on for C

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 11.

Turn-on for C

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 12.

Turn-off for C

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 13.

Turn-off for C

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 14.

Turn-off for C

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 15.

UVLO, V

I

rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 16.

UVLO, V

I

falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 17.

Figure 18.

Overcurrent protection characteristics, V

Overcurrent protection characteristics, V

I

I

= 3 V, R

LOAD

= 5 V, R

LOAD

= 2.2 Ω . . . . . . . . . . . . . . . . . . . . 21

= 2.2 Ω . . . . . . . . . . . . . . . . . . . . 21

Figure 19.

I

CC

Figure 20.

t

r

versus V

versus V

I

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 21.

t

f

versus V

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 22.

Rds(on) versus V

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 23.

Turn-on for C

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 24.

Turn-on for C

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 25.

Turn-on for C

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 26.

Turn-off for C

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 27.

Turn-off for C

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 28.

Turn-off for C

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 29.

Turn-on for C

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 30.

Turn-on for C

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 31.

Turn-on for C

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 32.

Turn-off for C

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 33.

Turn-off for C

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 34.

Turn-off for C

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 35.

UVLO, V

I

rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 36.

UVLO, V

I

falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 37.

Figure 38.

Overcurrent protection characteristics, V

Overcurrent protection characteristics, V

I

I

= 3 V, R

LOAD

= 5 V, R

LOAD

= 1 Ω . . . . . . . . . . . . . . . . . . . . . . 32

= 1 Ω . . . . . . . . . . . . . . . . . . . . . . 32

Figure 39.

I

CC

Figure 40.

t

r

versus V

versus V

I

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 41.

t

f

versus V

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 42.

Rds(on) versus V

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 43.

SO-8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 44.

MSOP8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 45.

SO-8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 46.

MSOP8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 47.

Reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Doc ID 15050 Rev 3 5/42

Block diagram STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 1.

Block diagram

).

%.

%.

4HERMAL

SENSE

/54

#URRENT

SENSE

$RIVER

56,/

&AULTBLANKINGREPORTING

DRIVERCONTROLUNIT

/#

#URRENT

SENSE

/#

/54

$RIVER

!-6

6/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 2.

Pinout

Pin descriptions

GND

IN

EN1

EN2

1

2

3

4

8

7

6

5

OC1

OUT1

OUT2

OC2

Table 2.

Pin descriptions

Pin number Name

1

2

GND

IN

3 EN1/EN1

4

5

6

7

8

EN2/EN2

OC2

OUT2

OUT1

OC1

Type

−

Ground

−

V

CC

input, 2.7 - 5.5 V

Function

I

Channel 1 active low (STMPS2242 and STMPS2262) or active high (STMPS2252 and STMPS2272) enable

I

Channel 2 active low (STMPS2242 and STMPS2262) or active high (STMPS2252 and STMPS2272) enable

O Open drain output for fault indication of channel 2

−

Output of channel 2

−

Output of channel 1

O Open drain output for fault indication of channel 1

Doc ID 15050 Rev 3 7/42

Functional description STMPS2242, STMPS2252, STMPS2262, STMPS2272

The STMPS devices feature a 10 ms fault blanking. Fault blanking allows current-limit faults, including momentary short-circuit faults that occur when hot-swapping a capacitive load, and also ensures that no fault is issued during power-up. When a load transient causes the device to enter current limit, an internal counter starts. If the load fault persists beyond the

10 ms fault-blanking timeout, the FAULT output asserts “low”. Load-transient faults less than

10 ms (typ.) do not cause a FAULT output assertion. Only current-limit faults have faultblanking. Die overtemperature faults and input voltage drops below the UVLO threshold cause an immediate fault output.

3.3

Note:

In overcurrent or short-circuit condition, the switch limits the current at 500 mA for

STMPS2242/STMPS2252 and 1000 mA for STMPS2262/STMPS2272. If the temperature of the die goes above the limit value, the switch turns OFF.

Reverse current blocking

When the switch is OFF, or when the STMPS device is not powered (V

CC

=0 V), the switch behaves as a Hi-Z at the output pin, ensuring that no reverse current will flow into the device when V

I

<V

O

.

In the case where the switch is ON, and a voltage higher than V

I

is applied to the OUT pin, a reverse current will occur.

3.4 UVLO

When the input voltage drops below the threshold value, the power switch turns OFF to prevent improper operation due to low voltage.

8/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Maximum rating

4.1

4.2

Stressing the device above the rating listed in the absolute maximum ratings table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Absolute maximum rating

Table 3.

Symbol

V

I

V

O

V

IENx

I

O

ESD

T

J

T

STG

T

R

T

R

Absolute maximum ratings

Parameter

Input voltage range

Output voltage range

EN input voltage range

Continuous output current

ESD protection level

Junction operating temperature

Storage temperature

Thermal resistance (MSOP8)

Thermal resistance (SO-8)

Value

–0.3 – 6.0

–0.3 – (V

I

+0.3)

–0.3 – 6.0

Internally limited

8

–40 to 125

–55 to 150

220

160

Unit

V

V

V kV

°C

°C

°C/W

°C/W

Recommended operating conditions

Table 4.

Recommended operating conditions

Symbol Parameter

Min

2.7

0

V

I

V

O

I

O

(STMPS2242

STMPS2252)

Input voltage

Output voltage

Continuous output current

I

O

(STMPS2262

STMPS2272)

Continuous output current

0

0

Value

Typ

5.0

5.0

-

Max

5.5

5.5

500

Unit

V

V mA

1000 mA

Doc ID 15050 Rev 3 9/42

Electrical specifications STMPS2242, STMPS2252, STMPS2262, STMPS2272

Table 5.

Electrical characteristics

Value

Symbol Parameter Test conditions Unit

Min Typ Max

Rds(on)

Rds(on) t r t f

Static drain source

ON state resistance

Static drain source

ON state resistance

Output rise time

(STMPS2242,STMPS2252)

Output rise time

(STMPS2262,STMPS2272)

Output fall time

(STMPS2242,STMPS2252)

Output fall time

(STMPS2262,STMPS2272

V

I

T

J

= 2.7 V

= 25°C

V

I

= 5.0 V

T

J

= 25°C;

V

I

= 2.7 V

-40 < T

J

< 125°C

V

I

= 5.0 V

-40 < T

J

< 125°C

V

I

= 5.0 V

R

LOAD

= 10 Ω

C

LOAD

= 1 µ F

V

I

R

LOAD

C

= 5.0 V

LOAD

= 10 Ω

= 1 µ F

V

I

= 5.0 V

R

LOAD

C

LOAD

= 10

= 1

µ

Ω

F

V

I

= 5.0 V

R

LOAD

= 10 Ω

C

LOAD

= 1

µ

F

0.05

0.05

0.05

0.05

120

105

160

115

200

140

2

2

2

2 m Ω m Ω m Ω ms ms ms ms

Table 6.

Symbol

Current limit characteristics

(V

I

= 5.5 V, I

O

= rated current, T

J

= 25°C, unless otherwise specified)

Value

Parameter Test condition Unit

Min Typ Max

I

OS

(STMPS2242

STMPS2252) Short circuit output current

I

OS

(STMPS2262

STMPS2272)

V

I

= 5 V

OUT connected to

GND through 10 m Ω load, device enabled into short circuit

0.6

1.1

0.8

1.6

1.0

2.0

A

A

10/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Electrical specifications

Table 7.

Symbol

Supply current characteristics

(V

I

= 5.5 V, I

O

= rated current, T

J

= 25°C, unless otherwise specified)

Value

Parameter Test condition

Min Typ Max

I

I

I

I off on leakage reverse

Switch turned off

Switch turned on

Output leakage current

Reversed leakage current

(1)

No load

Switch is off

No load

Switch is off

-40 < T

J

< 125°C

No load

Switch is on

No load

Switch is on

-40 < T

J

< 125°C

I off (grounded output)

-

I off (floating output)

I off (grounded output)

-

I off (floating output)

-40 < T

J

< 125°C

Switch is off

V

I

< V

O

,

Output connected to

5.5 V, 25°C

Switch is off

V

I

< V

O

Output connected to

5.5 V, 125°C

9

50

1

1

1

1

14

16

70

85

2

6

2

10

1.

I leakage

= I off-ground

- I off

, where I off-ground

= current into IN when switch is off and output is grounded

Unit

μ A

μ A

μ A

μ A

Table 8.

Symbol

T1

T2

Hysteresis

Thermal characteristics

(V

I

= 5.5 V, I

O

= rated current, T

J

= 25°C, unless otherwise specified)

Value

Parameter Test condition

Min Typ Max

Thermal shutdown threshold

Recovery from thermal shutdown

135

125

10

Unit

°C

°C

°C

Doc ID 15050 Rev 3 11/42

Electrical specifications STMPS2242, STMPS2252, STMPS2262, STMPS2272

Table 9.

Symbol

V

UVLO

Hysteresis

UVLO characteristics

(V

I

= 5.5 V, I

O

= rated current, T

J

= 25°C, unless otherwise specified)

Value

Parameter Test condition

Min Typ Max

Undervoltage lockout threshold

2.0

2.5

75

Table 10.

OCx pin characteristics

(V

I

= 5.5 V, I

O

= rated current, T

J

= 25°C, unless otherwise specified)

Value

Symbol Parameter Test condition

Min Typ Max

OC blanking

OCx assertion and de-assertion

V

O

Output low voltage

I off

Off current

I

O

= 5 mA

V

OC

= 2.7 V, 5.5 V

(No OC condition)

4

−

−

8

−

−

15

0.4

1.0

Table 11.

ENx pin characteristics

(V

I

= 5.5 V, I

O

= rated current, T

J

= 25°C, unless otherwise specified)

Value

Symbol Parameter Test condition

Min Typ Max

V

IH

High level input voltage

V

I

= 2.7 V to 5.5 V

V t t

I

IL

I on off

Low level input voltage

Input current

Turn ON time

(1)

Turn OFF time

(1)

V

I

= 4.5 V to 5.5 V

V

I

= 2.7 V to 4.5 V

V

IENx

= 0 V or V

I

R

LOAD

C

LOAD

= 10

Ω

= 100 μ F

R

LOAD

C

LOAD

= 10 Ω

= 100 μ F

1.

Not tested in production, specified by design.

2.0

−

−

-0.5

−

−

−

−

−

−

−

−

−

0.8

0.4

0.5

5

10

Unit

V mV

Unit

Unit ms

V

V

V

µA ms ms

V

µA

12/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

6 Typical operating characteristics

Typical operating characteristics

6.1.1

The waveforms and characteristics shown in this section pertain to the STMPS2252 device.

The STMPS2242 is expected to have the same characteristics with inverted EN input function. All measurements are at ambient temperature 25 °C.

Turn-on/off characteristics for V

I

= 3 V, R

LOAD

= 6 Ω

Figure 3.

Turn-on for C

LOAD

= 1 µF

Doc ID 15050 Rev 3 13/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 4.

Turn-on for C

LOAD

= 100 µF

Figure 5.

Turn-on for C

LOAD

= 470 µF

14/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 6.

Turn-off for C

LOAD

= 1 µF

Typical operating characteristics

Figure 7.

Turn-off for C

LOAD

= 100 µF

Doc ID 15050 Rev 3 15/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 8.

Turn-off for C

LOAD

= 470 µF

6.1.2 Turn-on/off characteristics for V

I

= 5 V, R

LOAD

= 10 Ω

Figure 9.

Turn-on for C

LOAD

= 1 µF

16/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 10.

Turn-on for C

LOAD

= 100 µF

Typical operating characteristics

Figure 11.

Turn-on for C

LOAD

= 470 µF

Doc ID 15050 Rev 3 17/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 12.

Turn-off for C

LOAD

= 1 µF

Figure 13.

Turn-off for C

LOAD

= 100 µF

18/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 14.

Turn-off for C

LOAD

= 470 µF

Typical operating characteristics

Doc ID 15050 Rev 3 19/42

Typical operating characteristics

Figure 15.

UVLO, V

I

rising

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 16.

UVLO, V

I

falling

20/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics

Figure 17.

Overcurrent protection characteristics, V

I

= 3 V, R

LOAD

= 2.2

Ω

Figure 18.

Overcurrent protection characteristics, V

I

= 5 V, R

LOAD

= 2.2 Ω

Doc ID 15050 Rev 3 21/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 19.

I

CC

versus V

I

60

50

40

30

20

10

0

2 3

Figure 20.

t r

versus V

I

3.0

2.5

t r

2.0

1.5

1.0

5.0

4.5

4.0

3.5

0.5

0.0

0 1 2 3

V

I

(V )

4

V

I

(V )

4

5

5 6

6

EN = H

EN = L

AM045006v1

C

LOAD

= 1 µF or

100 µF

C

LOAD

= 470 µF

AM045007v1

22/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 21.

t f

versus V

I

14

12

10

8

6

4

2

0

0 1 2 3

V

I

(V )

Figure 22.

Rds(on) versus V

I

130

120

110

100

90

80

70

60

2 2.5

3 3.5

4

4

V

I

(V )

Typical operating characteristics

4.5

5

5

6

C

C

LOAD

= 1 µF

LOAD

= 100 µF

C

LOAD

= 470 µF

AM04500 8 v1

5.5

6

AM045009v1

Doc ID 15050 Rev 3 23/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

6.2.1

The waveforms and characteristics shown in this section pertain to the STMPS2272 device.

The STMPS2262 is expected to have the same characteristics with inverted EN input function. All measurements are at ambient temperature 25 °C.

Turn-on/off characteristics for V

I

= 3 V, R

LOAD

= 3 Ω

Figure 23.

Turn-on for C

LOAD

= 1 µF

24/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 24.

Turn-on for C

LOAD

= 100 µF

Typical operating characteristics

Figure 25.

Turn-on for C

LOAD

= 470 µF

Doc ID 15050 Rev 3 25/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 26.

Turn-off for C

LOAD

= 1 µF

Figure 27.

Turn-off for C

LOAD

= 100 µF

26/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 28.

Turn-off for C

LOAD

= 470 µF

Typical operating characteristics

6.2.2 Turn-on/off characteristics for V

I

= 5 V, R

LOAD

= 5 Ω

Figure 29.

Turn-on for C

LOAD

= 1 µF

Doc ID 15050 Rev 3 27/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 30.

Turn-on for C

LOAD

= 100 µF

Figure 31.

Turn-on for C

LOAD

= 470 µF

28/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 32.

Turn-off for C

LOAD

= 1 µF

Typical operating characteristics

Figure 33.

Turn-off for C

LOAD

= 100 µF

Doc ID 15050 Rev 3 29/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 34.

Turn-off for C

LOAD

= 470 µF

Figure 35.

UVLO, V

I

rising

30/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 36.

UVLO, V

I

falling

Typical operating characteristics

Doc ID 15050 Rev 3 31/42

Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 37.

Overcurrent protection characteristics, V

I

= 3 V, R

LOAD

= 1

Ω

Figure 38.

Overcurrent protection characteristics, V

I

= 5 V, R

LOAD

= 1 Ω

32/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics

Figure 39.

I

CC

versus V

I

60

20

10

0

2

50

40

30

3

Figure 40.

t r

versus V

I

3 t r

1.5

1

0.5

2.5

2

0

0 1 2 3

V

I

(V )

4

V

I

(V )

4

5

5 6

6

EN = H

EN = L

AM045026v1

C

LOAD

= 1 µF or

100 µF

C

LOAD

= 470 µF

AM045024v1

Doc ID 15050 Rev 3 33/42

Typical operating characteristics

Figure 41.

t f

versus V

I

4 t f

3

2

1

0

0

7

6

5

1 2

STMPS2242, STMPS2252, STMPS2262, STMPS2272

3

V

I

(V )

4

Figure 42.

Rds(on) versus V

I

130

120

110

100

90

80

70

60

2 2.5

3 3.5

4

V

I

(V )

4.5

5

5

6

C

LOAD

= 1 µF

C

LOAD

= 100 µF

C

LOAD

= 470 µF

AM04502 8 v1

5.5

6

AM045029v1

34/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Application information

7.1 Input and output capacitors

Input and output capacitors improve the performance of the device; the actual capacitance should be optimized for the particular application. For all applications, a 0.1 µF or greater ceramic bypass capacitor between IN and GND as close to the device as possible is recommended for local noise decoupling. This precaution also reduces ringing on the input due to power supply transients.

An additional capacitor may be needed on the input to reduce input voltage overshoots from exceeding the absolute maximum voltage of the device during heavy transient conditions.

This is especially important during bench testing when long, inductive cables are used to connect the evaluation board to the bench power supply. The value of 100 µF may be adequate in most situations.

An output capacitor is not required for device functionality, but placing a high-value (in the order of 10 - 100 µF) electrolytic capacitor on the output pins is recommended when large transient currents are expected on the output.

Doc ID 15050 Rev 3 35/42

Package mechanical data

8

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of

ECOPACK

®

packages, depending on their level of environmental compliance. ECOPACK

® specifications, grade definitions and product status are available at: www.st.com

.

ECOPACK

®

is an ST trademark.

Figure 43.

SO-8 package outline

001602 3 C

36/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Package mechanical data

Table 12.

SO-8 mechanical data

Millimeters

Symbol

Min Typ

A 1.35

−

A1 0.10

A2 1.10

−

−

B 0.33

−

C 0.19

−

D

(1)

4.80

−

E 3.80

− e

−

1.27

H 5.80

− h 0.25

−

L 0.40

− k ddd

−

0° (min.), 8° (max.)

−

Max

1.75

0.25

1.65

0.51

0.25

5.00

4.00

−

6.20

0.50

1.27

0.10

1.

Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, potrusions or gate burrs shall not exceed 0.15 mm (0.006 inch) in total (both sides).

Doc ID 15050 Rev 3 37/42

Package mechanical data STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 44.

MSOP8 package outline

38/42

MSOP8_7277133_C

Table 13.

MSOP8 mechanical data

Millimeters

Symbol

Min

A

−

A1 0

Typ

−

−

Max

1.10

0.15

A2 0.75 0.85 0.95 b 0.22

− c 0.08

−

0.40

0.23

D 2.90 3.00 3.10

D3

−

2.16

−

E 4.67 4.90 5.07

E1 2.90 3.00 3.10

E5

−

1.73

− e e1

−

0.65

1.95

−

−

L 0.40

−

0.80

L2

−

0.25

−

< 0°

−

6°

Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Figure 45.

SO-8 carrier tape

Package mechanical data

Figure 46.

MSOP8 carrier tape

0010914_G

Doc ID 15050 Rev 3

?"

39/42

Package mechanical data

Figure 47.

Reel information

STMPS2242, STMPS2252, STMPS2262, STMPS2272

Table 14.

Reel mechanical data

Symbol

Min

D

N

A

C

T

12.8

20.2

60

Millimeters

Typ Max

330

13.2

22.4

40/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Revision history

Table 15.

Document revision history

Date Revision

03-Dec-2008

18-Dec-2009

19-Jan-2011

1

2

3

Changes

Initial release.

Modified: Table 6

,

Table 7

and Table 9

.

Added

Section 6: Typical operating characteristics

and Section 7:

Application information

; minor textual changes.

Doc ID 15050 Rev 3 41/42

STMPS2242, STMPS2252, STMPS2262, STMPS2272

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42/42 Doc ID 15050 Rev 3