AMS AS3674 Datasheet

austriamicrosystems AG is now ams AG

The technical content of this austriamicrosystems datasheet is still valid.

Contact information:

Headquarters:

ams AG

Tobelbaderstrasse 30

8141 Unterpremstaetten, Austria

Tel: +43 (0) 3136 500 0 e-Mail: [email protected]

Please visit our website at

www.ams.com

Datasheet

AS3674

Highly Efficient 2-10 LEDs Backlight Driver with 2 PWM Inputs

1 General Description 2 Key Features



2 MHz DCDC Boost converter

The AS3674 is an inductive highly efficient DCDC boost converter. The DCDC converter operates at a fixed fre-

- Small 4.7µH external coil quency of 2MHz and includes soft startup to allow easy

- Very high system efficiency of 86% (DCDC and integration into noise sensitive RF systems. A predictcurrent sources combined) able startup is guaranteed even with very low duty cycle

PWM input signals. The voltage on the output capacitor is controlled to minimize ripple and to avoid any acoustic effects for low frequency PWM input signals.

The output of the DCDC converter is used for five current sources connected to up to 10 LEDs. If a current

- Very low voltage changes on output to avoid acoustic noise on output capacitor even with PWM conditions



Five Current sources up to 25mA

- Low voltage compliance (150mV)

valid

source is not required, it shall be connected to VOUT or

GND - the AS3674 detects this condition and disables this current source automatically; this keeps the efficiency of the system constantly high.

The AS3674 is controlled by two enable inputs, ON13 and ON45. These inputs can also be used to connect a

PWM input (like DLS or DBC).

The AS3674 includes several protection functions like undervoltage lockout, overcurrent and overtemperature.

No microvias are required to assemble the AS3674 if only four channels are used and ON13=ON45.

package measuring only 1.7x1.4x0.5mm and operates over the -30ºC to +85ºC temperature range.

Figure 1. AS3674 Typical Operating Circuit

ams





- High side current source to simplify layout and thermal management of the LEDs

LEDs to keep efficiency high

AG



Undervoltage lockout and overcurrent protection



Overtemperature protection

3 Applications

content still



Available in a tiny WL-CSP package

- 3x4 balls, 0.4mm pitch, 1.7x1.4x0.5mm

AS3674

Technical

www.austriamicrosystems.com/AS3674

(ptr)

1.1-1 1 - 18

AS3674

Datasheet - P i n o u t

4 Pinout

Pin Assignment

Figure 2. Pin Assignments (Top View)

AS3674 still valid

C2

C3

D1

D2

D3

A3

B1

B2

B3

LED1

ON13

ON45

LED2

LED5

LED3

SW

VOUT

LED4

AG

AS3674

Pin Description

Table 1. WL-CSP12 Pin Description

Pin Number Pin Name

A1

A2

C1

VIN

ISET

GND

Description

Positive supply voltage input - connect to supply and make a short connection

content

Digital input pin - enable input active high for current sources D1...D3

1

,

2

Digital input pin - enable input active high for current sources D4...D5

1

,

2

Current source output 2 - controlled by ON13

Supply ground - connect to supply and make a short connection to input capacitor C

VIN

and C

VOUT

Current source output 5 - controlled by ON45

Current source output 3 - controlled by ON13

DCDC converter switching node

DCDC converter output - make a short connection to capacitor C

OUT

Current source output 4 - controlled by ON45

2. If the forward voltage of the LED strings connected to LED4,5 are different than LED1,2,3, acoustic noise is possible if the driving PWM signal on ON13 is different to ON45.

www.austriamicrosystems.com/AS3674 1.1-1 2 - 18

AS3674

Datasheet - A b s o l u t e M a x i m u m R a t i n g s

5 Absolute Maximum Ratings

Stresses beyond those listed in

Table 2

may cause permanent damage to the device. These are stress ratings only,

and functional operation of the device at these or any other conditions beyond those indicated in Table 3, “Electrical

Characteristics,” on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may

affect device reliability.

Table 2. Absolute Maximum Ratings

Min

-0.3

Max

+7.0

Units

V

Comments Parameter

VIN, ON13, ON45 and ISET to GND

ON13, ON45 and ISET to VIN

SW, VOUT, LED1...LED5 to GND

SW, LED1...LED5 to VOUT

Input Pin Current without causing latchup

Continuous Power Dissipation (T

A

= +70ºC)

Continuous power dissipation

-0.3

-100

+0.3

11

+0.3

+100

+I

IN

870

V

V

V mA mW internal protection diodes to VIN internal protection diodes to VOUT

Norm: EIA/JESD78

valid

P

T

1

at T

AMB

=70ºC

P

DERATE

2

Continuous power dissipation derating factor

Electrostatic Discharge

ESD HBM

ESD CDM

ESD MM

11.67

mW/ºC

±2000

±500

AG

±100 V

Norm: JEDEC JESD 22-C101E

Norm: JEDEC JESD 22-A115-B

Temperature Ranges and Storage Conditions

Junction Temperature

Storage Temperature Range

Humidity

Body Temperature during Soldering

Moisture Sensitivity Level (MSL)

-55

ams

+125

+125

85

ºC

ºC

% Non condensing

1. Depending on actual PCB layout and PCB used

+260

MSL 1

ºC according to IPC/JEDEC J-STD-020

Represents a max. floor life time of

2. P

DERATE

derating factor changes the total continuous power dissipation (P

T

) if the ambient temperature is not

70ºC. Therefore for e.g. T

AMB

=85ºC calculate P

T

at 85ºC = P

T

- P

DERATE

* (85ºC - 70ºC) unlimited

Technical

www.austriamicrosystems.com/AS3674 1.1-1 3 - 18

AS3674

Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s

6 Electrical Characteristics

V

VIN

= +2.5V to +5.5V, T

AMB

= -30ºC to +85ºC, unless otherwise specified. Typical values are at V

VIN

= +3.7V, T

AMB

=

+25ºC, unless otherwise specified.

Table 3. Electrical Characteristics

Condition Min Typ Max Unit Symbol Parameter

General Operating Conditions

V

VIN

V

VIN

_

REDUC

ED

Supply Voltage

Supply Voltage reduced performance

I

SHUTDOWN

Shutdown Current

I

VIN

Operating Current

T

AMB

Operating

Temperature

DCDC Converter parameters

not all parameters within specification

ON13=0V, ON45=0V no load, PWM Normal mode

2.5

2.3

-30

3.7

0.5

250

25

5.5

2.0

85

V

V

µA

µA

ºC

valid

V

VIN

+

0.3V

V

VOUT

Output Voltage VOUT automatically regulated

V

VOUT

_MAX

V

V

VOUT

_

RIPP

LE_PWM

I

LOAD

 f

CLK

Voltage VOUT due to

PWM signal

Load current

Overall Efficiency

Operating Frequency

V

VIN

<5.0V, I

LOAD

<75mA

AG

V

VIN

=3.7V, T

AMB

= +25ºC,

LED mismatch <= 30mV,

V

LED

=3.0V, coil Samsung

CIG21K4R7SCE

I

LOAD

=50mA

I

LOAD

=75mA

I

LOAD

=100mA

All internal timings are derived from this oscillator t

MIN_ON

MDC

Minimum on-time

Maximum Duty Cycle

R

SW_P

DCDC Switch

SW - VOUT

R

SW_N

DCDC Switch

SW - GND

Output voltage soft start

t

VOUT_START softstart time measured from first high signal on ON13 or

ON45

VOUT startup voltage

V

VOUT_

START t

PWM_START

_MAX

Startup with PWM

Maximum duration between PWM pulses

during startup; see Figure 16 on page 10

t

TIMEOUT

DCDC timeout time

LED1...LED5 output voltage range

LED1...LED5 output current range

LED1...LED5 current source accuracy

1 if ON13 and ON45=0 for t

TIMEOUT

, the DCDC is stopped and the AS3674 enters shutdown

Current Sources

V

I

Technical

5mA < I

LED

< 25mA

I

LED1..5



2.5mA < I

LED

< 5mA

0.0

85

86

86

86

140

170

100

-10% 2.0

+10% MHz

10

29

2.6

x2

0.0

-7.5

-10

60

90

0.5

0.5

1.2

7.0

11

3.3

x2

12

48

4.0

x2

25.0

+7.5

+10 mV mA

% ns

%



 ms

V ms ms

V mA

%

% www.austriamicrosystems.com/AS3674 1.1-1 4 - 18

AS3674

Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s

Table 3. Electrical Characteristics (Continued)

Symbol

I

LED1..5

MATCH

Parameter

LED1...LED5 current source matching

Condition

5mA < I

LED

< 25mA

Min

-4.0

I

LED1..5

RIPPLE

I

LED1..5

PWMLIN

LED1...LED5 ripple current

LED1...LED5 linearity

2

I

LED

> 5mA

BW=10MHz

I

LED

=20mA,

PWM frequency 300Hz

I

LED

< 5mA

PWM>=25/255

25/255>

PWM>=1/255 on pin ON13 or ON45 f

PWM

I

LED1..5

LEAKAGE

PWM input frequency

LED1...LED5 leakage current

V

ILED_COMP

LED1...LED5 current source voltage compliance

Current Reference (pin ISET)

current source off, T

AMB

< +50ºC

Minimum voltage between pin VOUT and

LED1...LED5, I

LED

<20mA

3

V

ISET

I

LED2ISET

ISET voltage

LED current to

ISETcurrent

Protection Functions (see page 13)

V

VOUT_MAX

V

VOUT_OPE

NLED

V

LED_OPEN

V

LED_SHORT t

LED_ERROR

_DEB_OPEN

VOUT overvoltage protection

VOUT open LED detection threshold

V

VLED1..5

open detection

V

LED1..5

short detection

V

LED1..5

open debounce time

V

VOUT_MAX

> V

AG

VOUT_OPENLED

Voltage level on VOUT where open LED detection is performed an open LED is assumed if the voltage on the

ams

LED_OPEN

VOUT_OPENLED

and

content

Short LED detection debounce time

4

8.6

8.3

t

LED_ERROR

_DEB_SHORT

V

LED1..5

short debounce time

Current Limit for coil

L

SW

(Pin SW)

I

LIMIT

510

T

OVTEMP

Overtemperature

Protection

Overtemperature

Hysteresis

Junction temperature

T

OVTEMPHY

ST

V

UVLO

Undervoltage Lockout

Falling V

VIN

1.8

V

UVLO

+0.05

Rising V

VIN

Digital Interface

V

IH

V

IL

Technical

R

PULLDOWN

High Level Input

Voltage

Pulldown resistor

1.07

1.8V on pad

0.0

100

100

-0.5

100

-2

-10

0.95

400

8.5

92

144

250

Typ Max Unit

+4.0

10

500

+2

%

% of

I

LED

µA

%

+10

300 800

0 +0.5

%

Hz

µA mV

valid

10.0

8.7

120

4.8

9.0

600 685

5

1.9

2.05

2.2

2.3

V

VIN

0.68

V

A/A

V

V mV

V

µs

µs mA

ºC

ºC

V

V

V

V k



1. Excluding variation of external resistor R

ISET

; voltage difference between any set of drivers less than 200mV www.austriamicrosystems.com/AS3674 1.1-1 5 - 18

AS3674

Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s

2. Note: It is not recommended to operate the current sources at minimum duty cycle with low LED currents.

3. The dcdc output voltage VOUT is regulated to 150mV above the maximum LED voltage (LED1...LED5) to guarantee proper operation of the current with output voltage ripple and undershoots (e.g. due to PWM or supply voltage changes)

4. The short LED detection debounce time is longer than the open LED detection debounce time to allow the parasitic capacitance of the LED to charge above V

LED_SHORT within this time and avoid wrong triggering of short

LED detection.

AG still valid

Technical

www.austriamicrosystems.com/AS3674 1.1-1 6 - 18

AS3674

Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s

7 Typical Operating Characteristics

V

BAT

= 3.7V, T

A

= +25ºC (unless otherwise specified).

Figure 3. DCDC Efficiency vs. VBAT

95

90

85

80

%

75

70

65

VLED=7.67V, ILEDs=98mA

60

VLED=7.5V, ILEDs=73.5mA

VLED=7.5V, ILEDs=49mA

55

2,5 2,9 3,3 3,7 4,1 4,5 4,9 5,3

Input Voltage (V)

Figure 5. Startup with PWM, 20% duty cycle

Figure 4. LED Efficiency vs. VBAT

95

90

85

80

%

75

70

65

VLED=7.67V, ILEDs=98mA

VLED=7.5V, ILEDs=73.5mA

60

VLED=7.5V, ILEDs=49mA

55

2,5 2,9 3,3 3,7 4,1 4,5 4,9 5,3

AG

Input Voltage (V)

valid

Figure 7. DCDC Switching Waveforms Figure 8. Open LED Detection Waveform

Technical

www.austriamicrosystems.com/AS3674 1.1-1 7 - 18

AS3674

Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s

Figure 9. VIN line transient

10

µ

s

(I

LOAD

=100mA) Figure 10. VOUT ripple with PWM

Figure 11. I

LED

ripple (I

LOAD

=100mA) Figure 12. ILED vs. R

ISET

25

20

15

AG ams

ILED mA

10

5

I

LED

=V

ISET

/R

ISET

*I

LED2ISET

still

ILED [mA]

valid

0 25 50 75 100 125 150 175 200

RISET [kOhm]

Figure 13. fosc vs.VIN

2,050

2,025 fosc

[MHz]

2,000

1,975

1,950

Technical

85deg

25deg

2,3 2,7 3,1 3,5 3,9 4,3 4,7 5,1 5,5

Input Voltage (V)

Figure 14. Current Error vs. duty cycle (I

LED

=25mA)

4

3

2 error

[%]

1

0

-1

0 10 20 30 40 50 60 70 80 90 100

PWM duty cycle [%] www.austriamicrosystems.com/AS3674 1.1-1 8 - 18

AS3674

Datasheet - D e ta i l e d D e s c r i p t i o n

8 Detailed Description

The AS3674 is a high performance DCDC step up converter and five current sources in a small WL-CSP12 package.

The LED configuration is done in up to five strings

1

, each strings using two LEDs in series

2

. This configuration results in excellent application efficiency even using very small external components (capacitors and coil). The device is controlled by ON13 and ON45. A high levels on these inputs enables the DCDC and the current sources. ON13 and

ON45 can be used as PWM inputs

3

to accurately control the LED brightness.

The target application is to use the AS3674 for highly efficient backlight driver (display and/or keypad backlight).

Internal Circuit

Figure 15. AS3674 internal circuit

& '

& '

(((

(((

)

AG still valid

)

The AS3674 includes a fixed frequency DCDC step-up with accurate startup control. It is enabled by the input pin

ON13 and ON45 and controls the LED current with five current sources. These input can be used as PWM inputs to control the brightness in two groups:

- a high level on ON13 enables LED1, LED2 and LED3

- a high level on ON45 enables LED4 and LED5.

The current is adjustable by an external resistor R

ISET

.

2. Single LED strings can be mixed with dual LED strings as long as each of the two groups (LED1...LED3,

LED4...LED5) has at least one string with two LEDs in series - it will reduce application efficiency.

3. Using the PWM inputs, the AS3674 supports DLS, dynamic luminance scaling, also called CABC, content adaptive backlight control or DBC, dynamic backlight control.

www.austriamicrosystems.com/AS3674 1.1-1 9 - 18

AS3674

Datasheet - D e ta i l e d D e s c r i p t i o n

Startup

In order to avoid inrush-current during startup the supplies are smoothly ramped up according to

Figure 16

even under low PWM duty cycle conditions. This allows the easy integration into mobile battery powered systems:

Figure 16. Startup Procedure

!" #

.

-

/ 0 1

$%&"""

1

0 2 / 0 1

'

()* *

,

()* ()*

AG

-

*%

/ 0

still valid

Technical

www.austriamicrosystems.com/AS3674 1.1-1 10 - 18

AS3674

Datasheet - D e ta i l e d D e s c r i p t i o n

The startup procedure is defined as shown in

Figure 17

:

Figure 17. Startup Flowchart

! "#$$%

'"/ 011

/ -"

"

&'

()*&'+" "" ,--"()*

-*.*./&

&'

&'

"

0"0$$

11

AG

'"/ 011

still valid

) ,--"/

"

3

-&' -0- / 0

()* 0"-0

4

+()*"

11// 0"

* ,*.*. "

--

ams

$ "$

5

)'

11 -"/ 0

11/ -"

* ,*.*. "

--

$ "$

5

)'

Open and short LED detection

After the startup is finished, the AS3674 continuously monitors open and shorted LEDs. If an open or shorted LED string is detected, this LED string is disabled and the driver continuous its normal operation. The driver is disabled to keep the efficiency of AS3674 for different LED configurations high. The error is cleared once the AS3674 enters shutdown

4

.

After startup is finished, for any LED, enabled by the inputs ON13 or ON45, is below V

LED_SHORT

, for at least t

LED_ERROR_DEB_SHORT

, a shorted LED is assumed.

Open LED

4. The error is automatically cleared as the open/short LED error might be temporarily (e.g. bouncing of the connections to the LED) www.austriamicrosystems.com/AS3674 1.1-1 11 - 18

AS3674

Datasheet - D e ta i l e d D e s c r i p t i o n

LED outputs (LED1...LED5) which are not used by the application shall be connected permanently to VOUT or GND.

The AS3674 detect this condition upon startup and automatically disables the current sources for these LEDs - see

Figure 18 and Figure 19 , immediately after the rising edged of ON13 or ON45.

For LEDs, which are open during operation of the device, following procedure of the AS3674 is used for detection:

After startup is finished, if the voltage on VOUT=V

VOUT_OPENLED

5 and the voltage across any current source, enabled by the inputs ON13 or ON45, is below V

LED_OPEN

(VOUT-LED1...5), for at least t

LED_ERROR_DEB_OPEN

, an open LED is assumed.

Figure 18 shows the waveform for the detection of a single open LED, Figure 19

for all LEDs open.

Figure 18. Single Open LED detection

!

###

!

"#$#

,-.

"#/

0+,-.+-1

!((

!*

!

!(

!

%&

'()

still valid

& !

### ( 2

'"(3('

("( !

Figure 19. All LEDs open

'(

)" *

"

ams content

$

&

'.!/

)" 0

!

"

(1#'.!/'#!2

+

,) -

#

5. If the current limit of the coil (I

LIMIT

) is reached before VOUT=V

VOUT_OPENLED

, an open LED is not detected.

www.austriamicrosystems.com/AS3674 1.1-1 12 - 18

AS3674

Datasheet - D e ta i l e d D e s c r i p t i o n

Protection and Fault Detection Functions

The protection functions protect the AS3674, its external components and connected LEDs against physical damage.

Overvoltage Protection

The voltage on VOUT is kept below or at V

VOUT_MAX

under every operating condition

6

. If the voltage on VOUT is at

V

VOUT_MAX

for more than 70ms

7

, the DCDC will shutdown. It can be re-enabled by setting ON13 and ON45 to low for more than t

TIMEOUT

.

DCDC Inductor Peak Current Limitation

To limit the maximum current from the battery, the DCDC converter limits its current through the coil to I

LIMIT

on a cycle by cycle basis.

Overtemperature Protection

The junction temperature of the AS3674 is continuously monitored. If the temperature exceeds T

OVTEMP stopped. The driver is automatically re-enabled once the junction temperature drops below T

OVTEMP

-T

OVTEMPHYST

.

valid

Supply undervoltage Protection

If the voltage on the pin VIN is or falls below V

UVLO

, the AS3674 is kept in shutdown.

AG still

Technical

6. When reaching VOUT=V

VOUT_OPENLED

, the open LED detection is performed.

7. The duration can vary from 55ms to 85ms within a single AS3674.

www.austriamicrosystems.com/AS3674 1.1-1 13 - 18

AS3674

Datasheet - A p p l i c a t i o n I n f o r m a t i o n

9 Application Information

External Components

Input Capacitor C

VIN

Low ESR input capacitors reduce input switching noise and reduce the peak current drawn from the battery. Ceramic capacitors are required for input decoupling and should be located as close to the device as is practical.

Table 4. Recommended Input Capacitor

Part Number

GRM155R60J225ME15

GRM155R60J155M---D

ECJ0MBFJ185V

C

2.2µF +/-20%

1.5µF

TC Code ESR

X5R

X5R

X5R

Rated

Voltage

6V3

6V3

Size

0402

(1.0x0.5x

0.5mm)

0402

(1.0x0.5x

0.5mm)

Manufacturer

Murata www.murata.com

Panasonic Matsushita www.panasonic.com

valid

CL05A225MQ5NSKC

JDK105BJ155MVNF

X5R

X5R

AG

0402

(1.0x0.5x

0.5mm)

0402

(1.0x0.5x

0.5mm)

Samsung Electro-

still

If a different input capacitor is chosen, ensure similar ESR value and at least 0.6µF capacitance at the maximum input supply voltage. Larger capacitor values (C) may be used without limitations.

Output Capacitors C

OUT they have low ESR and are available in small footprints. The capacitor should be located as close to the device as is practical.

range.

Table 5. Recommended Output Capacitor C

OUT

Part Number C TC Code ESR Size Manufacturer

Rated

Voltage

GRM219R61A116UE82L

CL21A226MPCLRKC

LDK212BJ106MDNT

10µF

10µF

X5R

X5R

X5R

120m



10V

10V

10V

0805

(2x1.25x

0.85mm)

0805

(2x1.25x

0.85mm)

0805

(2x1.25x

0.85mm)

Murata www.murata.com

Samsung Electro-

Mechancs www.sem.samsung.co.kr

Taiyo Yuden www.taiyo-yuden.com

If a different output capacitor is chosen, ensure similar ESR values and at least 4.2µF @ 5.6V and maximum 20µF

Technical

www.austriamicrosystems.com/AS3674 1.1-1 14 - 18

AS3674

Datasheet - A p p l i c a t i o n I n f o r m a t i o n

Inductor L

SW

The fast switching frequency (2MHz) of the AS3674 allows for the use of small SMDs for the external inductor. The inductor should have low DC resistance (DCR) to reduce the I

2

R power losses - high DCR values will reduce efficiency.

Table 6. Recommended Inductor

Part Number

LQM21PN4R7_G

L

4.7µH;

>2.45µH @ 0.5A

DCR

230m



Size

2.0x1.25x0.9mm

max height 1.0mm

Manufacturer

Murata www.murata.com

current.

ELGTEA4R7NA

CIG21K4R7SCE

4.7µH;

>2.45µH @ 0.5A

4.57µH;

>2.45µH @ 0.5A

<300m



<300m



2.0x1.25x0.9mm

max height 1.0mm

2.0x1.25x0.9mm

max height 1.0mm

Panasonic www.panasonic.com

Samsung Electro-

Mechancs www.sem.samsung.co.kr

If a different inductor is chosen, ensure similar DCR values and at least 2.45µH inductance at maximum peak input

valid

PCB Layout Guideline

The high speed operation requires proper layout for optimum performance. Route the power traces first and try to min-

Loop1: pin GND - C

VIN

- L

SW

- pin SW - pin GND

Loop2: pin GND - C

VIN

- L

SW

- pin SW - pin VOUT - C

VOUT

AG still

At the pin GND a single via (or more vias, which are closely combined) connects to the common ground plane. This via(s) will isolate the DCDC high frequency currents from the common ground (as most high frequency current will flow between Loop1 and Loop2 and will not pass the ground plane) - see the ‘island’ at the two through ground vias in

Figure 20 :

Figure 20. Layout recommendation

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AS3674

Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s

10 Package Drawings and Markings

Figure 21. 12pin WL-CSP12 1.7x1.4x0.5mm Marking

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AS3674

Datasheet - O r d e r i n g I n f o r m a t i o n

11 Ordering Information

The devices are available as the standard products shown in Table 7 .

Table 7. Ordering Information

Model Description

AS3674-ZWLT

Highly Efficient 2-10 LEDs Backlight Driver with 2

PWM Inputs

Delivery Form

Tape & Reel

Package

12-pin WL-CSP

(1.7x1.4x0.5mm)

RoHS compliant / Pb-Free /

Green

Note:

All products are RoHS compliant and austriamicrosystems green.

Buy our products or get free samples online at ICdirect: http://www.austriamicrosystems.com/ICdirect

Technical support is found at http://www.austriamicrosystems.com/Technical-Support

For further information and requests, please contact us mailto:[email protected]

or find your local distributor at http://www.austriamicrosystems.com/distributor

Note:

AS3674-ZWLT

AS3674-

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Temperature Range: -30ºC - 85ºC

Delivery Form: Tape & Reel

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www.austriamicrosystems.com/AS3674 1.1-1 17 - 18

AS3674

Datasheet - O r d e r i n g I n f o r m a t i o n

Copyrights

Copyright © 1997-2011, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe.

Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.

All products and companies mentioned are trademarks or registered trademarks of their respective companies.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding

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This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for production flow, such as test flow or test location.

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austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.

Contact Information

Headquarters

austriamicrosystems AG

Tobelbaderstrasse 30

Schloss Premstaetten

A-8141 Austria

Technical

For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com/AS3674 1.1-1 18 - 18