AS3693C-ZTQT

AS3693C-ZTQT Datasheet

AS3693C

Part	Datasheet
AS3693C-ZTQT	AS3693C-ZTQT (pdf)

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AS3693C austriamicrosystems Product Specification, Confidential Channel high precision LED driver for LCD Backlight 1 General Description The AS3693C is a 9 channels high precision LED controller with build in PWM generators for driving external FETs in LCD-backlight panels. External clock and synchronizing inputs allow the synchronization of the LCD backlight with the TV picture. Local dimming and scan dimming is supported by 9 independent PWM generators with programmable delay, period and duty cycle. Three free configurable dynamic power feedback circuits make the device usable for white LED as well as RGB backlights. Build in safety features include thermal shutdown as well as open and short LED detection. All circuit parameters are programmable via I2C or SPI interface. 2 Key Features 9 Channel LED driver Output current only limited by external transistor Output voltage 0.4V to 50V Absolute current accuracy +/- Output slew rate programmable Current programmable with external resistor Linear current control with 8 - bit DAC Linear current control with external analog voltage Digital current control with 9 independent PWM generators Free programmable 12 bit resolution period, high time and delay Overvoltage detection short LED Undervoltage detection open LED Temperature shutdown Fault interrupt output H-Sync, V-Sync inputs to synchronize with TVset Internal or external PWM clock I2C interface SPI interface 5 bit device - address sets device address and interface mode Automatic supply regulation feedback Each output can be assigned to red, green or blue feedback. Package LQFP44 LD 10x10mm 3 Applications • LED backlighting for LCD TV sets and monitors 1 - 30 AS3693C 4 Block Diagram Vsupply austriamicrosystems Vreg FBB FBG FBR REF V2_5 Reference, DAC Fault detectors SMPS feedback AS3693C 86 byte registers SPI / I2C Interface V2_5 Vsync Hsync SDA SCL CS SDO Addr2 Addr1 Fault 2 - 30 AS3693C austriamicrosystems Table of Contents 1 General Description 1 2 Key 1 3 1 4 Block 2 Characteristics 4 Absolute Maximum Ratings 4 Operating Conditions 5 Electrical 5 Typical Operation Characteristics 7 Output current vs Output Voltage 7 Vsupply vs VREG and V2.5 at startup 7 9us Slew 8 Supply 8 6 Block Description 9 Feedback Circuit 9 Feedback Selection 10 Voltage fault registers 11 Curreg 11 PWM modes 13 SYNC mode PWM_MODE = 00 13 ASYNC mode PWM_MODE = 01 15 PWM high time, period and delay registers 16 Shunt Regulator 17 Undervoltage lockout 17 Over temperature control 17 Device address setup 18 I2C Device Address setup 18 SPI Device Address setup 18 Digital interface 19 I2C interface 19 SPI interface 21 7 Register 23 8 Pinout and Packaging 26 Package drawing LQFP44 28 9 Ordering Information 30 Disclaimer 30 Contact 30 3 - 30 AS3693C austriamicrosystems Characteristics Absolute Maximum Ratings Stresses beyond those listed in Table 1 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 Section 5 Electrical Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 1 Absolute Maximum Ratings Parameter VDDMAX Supply for LED’s VINVREG VREG supply voltage IINVREG Maximum Vreg current VIN2.5V V Pins VIN5V 5V Pins VIN50V 50V Pins Input Pin Current TSTRG Storage Temperature Range Humidity VESD Electrostatic Discharge on Pins Curr1 Curr9 VESD Electrostatic Discharge on all Pins Total Power Dissipation PDERATE TBODY PT Derating Factor Body Temperature during Soldering -25 -55 5 -4000 -2000 Max Unit Note V See notes1 V Applicable for pin VREG Maximum Current flowing into Vreg V2_5+0.3V V Applicable for 2.5V pins4 VREG+ 0.3V 9 Ordering Information Table 6 Ordering Information Part Number Marking Package Type AS3693C- ZTQT AS3693C LQFP 44 Delivery Form Tape and Reel in Dry Pack Description Package size = 10x10mm, Copyright Copyright 1997-2006, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, AustriaEurope. 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 of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent identification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. 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 life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, 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 Business Unit Communications A 8141 Schloss Premstätten, Austria T. +43 0 3136 500 0 F. +43 0 3136 5692 For Sales Offices, Distributors and Representatives, please visit: a u s t r i a m i c r o s y s t e m s a leap ahead 30 - 30

PDF Datasheet Preview

AS3693C
austriamicrosystems

Product Specification, Confidential

Channel high precision LED driver for LCD Backlight
1 General Description

The AS3693C is a 9 channels high precision LED controller with build in PWM generators for driving external FETs in LCD-backlight panels. External clock and synchronizing inputs allow the synchronization of the LCD backlight with the TV picture. Local dimming and scan dimming is supported by 9 independent PWM generators with programmable delay, period and duty cycle. Three free configurable dynamic power feedback circuits make the device usable for white LED as well as RGB backlights. Build in safety features include thermal shutdown as well as open and short LED detection. All circuit parameters are programmable via I2C or SPI interface.
2 Key Features
9 Channel LED driver Output current only limited by external transistor Output voltage 0.4V to 50V Absolute current accuracy +/- Output slew rate programmable Current programmable with external resistor Linear current control with 8 - bit DAC Linear current control with external analog voltage Digital current control with 9 independent PWM generators

Free programmable 12 bit resolution period, high time and delay Overvoltage detection short LED Undervoltage detection open LED Temperature shutdown Fault interrupt output H-Sync, V-Sync inputs to synchronize with TVset Internal or external PWM clock I2C interface SPI interface 5 bit device - address sets device address and interface mode Automatic supply regulation feedback Each output can be assigned to red, green or blue feedback. Package LQFP44 LD 10x10mm
3 Applications
• LED backlighting for LCD TV sets and monitors
1 - 30

AS3693C
4 Block Diagram

Vsupply
austriamicrosystems

Vreg FBB FBG FBR REF V2_5

Reference, DAC

Fault detectors

SMPS feedback

AS3693C
86 byte registers

SPI / I2C Interface

V2_5

Vsync Hsync SDA SCL CS SDO Addr2 Addr1 Fault
2 - 30

AS3693C
austriamicrosystems

Table of Contents
1 General Description 1 2 Key 1 3 1 4 Block 2 Characteristics 4

Absolute Maximum Ratings 4 Operating Conditions 5 Electrical 5 Typical Operation Characteristics 7 Output current vs Output Voltage 7 Vsupply vs VREG and V2.5 at startup 7 9us Slew 8 Supply 8 6 Block Description 9 Feedback Circuit 9
Feedback Selection 10 Voltage fault registers 11 Curreg 11 PWM modes 13 SYNC mode PWM_MODE = 00 13 ASYNC mode PWM_MODE = 01 15 PWM high time, period and delay registers 16 Shunt Regulator 17 Undervoltage lockout 17 Over temperature control 17 Device address setup 18 I2C Device Address setup 18 SPI Device Address setup 18 Digital interface 19 I2C interface 19 SPI interface 21 7 Register 23 8 Pinout and Packaging 26 Package drawing LQFP44 28 9 Ordering Information 30 Disclaimer 30 Contact 30
3 - 30

AS3693C
austriamicrosystems

Characteristics

Absolute Maximum Ratings

Stresses beyond those listed in Table 1 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 Section 5 Electrical Characteristics is not implied.

Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Table 1 Absolute Maximum Ratings

Parameter

VDDMAX

Supply for LED’s

VINVREG

VREG supply voltage

IINVREG

Maximum Vreg current

VIN2.5V

V Pins

VIN5V
5V Pins

VIN50V
50V Pins

Input Pin Current

TSTRG Storage Temperature Range

Humidity

VESD

Electrostatic Discharge on Pins Curr1 Curr9

VESD Electrostatic Discharge on all Pins

Total Power Dissipation

PDERATE TBODY

PT Derating Factor

Body Temperature during Soldering
-25 -55
5 -4000 -2000

Max Unit

Note

V See notes1

V Applicable for pin VREG

Maximum Current flowing into Vreg

V2_5+0.3V V Applicable for 2.5V pins4

VREG+ 0.3V
9 Ordering Information
Table 6 Ordering Information

Part Number Marking Package Type AS3693C- ZTQT AS3693C LQFP 44

Delivery Form

Tape and Reel in Dry Pack

Description Package size = 10x10mm,

Copyright

Copyright 1997-2006, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, AustriaEurope. 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 of their respective companies.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent identification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. 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 life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application.

The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, 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 Business Unit Communications A 8141 Schloss Premstätten, Austria T. +43 0 3136 500 0 F. +43 0 3136 5692

For Sales Offices, Distributors and Representatives, please visit:
a u s t r i a m i c r o s y s t e m s a leap ahead
30 - 30

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AS3693C-ZTQT Datasheet file may be downloaded here without warranties.

Datasheet ID: AS3693C-ZTQT 519704