AS3691A-ZQFP

AS3691A-ZQFP Datasheet

AS3691 Datasheet

Part	Datasheet
AS3691A-ZQFP	AS3691A-ZQFP (pdf)

Related Parts	Information
AS3691A-ZTSP	AS3691A-ZTSP

PDF Datasheet Preview
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: Please visit our website at AS3691 Datasheet Datasheet AS3691 4 Precision 400mA Current Sources for RGB and Single Color Leds 1 General Description The AS3691 AS3691A and AS3691B features four Very wide output voltage current source high precision current sources for lighting of up to four LED strings RGB or single color leds . Each of the four currents sources can be controlled lid independently by PWM inputs. The full scale current value is set by external resistors. a 2 Key Features 4 x up to 0.4A constant current outputs v Programmable with external resistors 4 independent PWM inputs ill Absolute current accuracy ’Automatic Supply Regulation’ to reduce power dissipation1 AG t st 1 Patent Pending voltage compliance − Down to 0.41V − Up to 15V 2 Integrated overtemperature protection Separate sense pads Rfb1-Rfb4 for easy and precise PCB Layout Package − DIE − QFN24 4x4mm − eP-TSSOP 2 15V is sufficient for most applications as the AS3691 dose not switch off the LED current completely 3 Applications General Lighting Backlighting RGB Backlighting for LCD TV/Monitors with White Color Balancing s n 4 Application Diagrams m te Figure 1 Application Diagram of AS3691 for Single Color Lighting a on VDD Csup 100nF Rvdd c Cvdd 100nF a VREG UV1 CURR1 UV2 CURR2 UV3 CURR3 UV4 CURR4 VDD UV ic AS3691 e ePTSSOP Package Drawings and 19 m t DIE 20 a n 11 Ordering Information 21 Owner ptr - Added Trays as delivery option order code AS3691AZQFT 3 - 22 AS3691 Datasheet 5 Pinout Pin Assignments Figure 3 Pin Usage VREG UV1 CURR1 UV2 CURR2 UV3 CURR3 UV4 CURR4 AS3691 lid D1 Ref va Overtemp T1 I1 T2 I2 T3 I3 T4 I4 ill Pad VSS ON1 RFB1 RES1 ON2 RFB2 RES2 ON3 RFB3 RES3 ON4 RFB4 RES4 G st Pin Descriptions A t Table 1 Pin Type Descriptions s n Pin Type e AI/O Analog Pin m t AI Analog Input Pin a n AO Analog Output Pin Digital Input Supply Pin l c Table 2 Pin Descriptions a Pin Number Pin Number ePTSSOP ic Package Package Pin Name CURR1 RFB1 nc RFB4 CURR4 RES4 Type AI/O AI nc AI AI/O AI/O Current Source 1 Output Connect to current set resistor R1 directly at resistor itself Leave open Connect to current set resistor R4 directly at resistor itself Current Source 4 Output Connect to current set resistor R4 11 Ordering Information Table 7 Ordering Information Part Number Marking Package Type Delivery Form AS3691A 1 AS3691A-ZQFP -orAS3691 1 lid AS3691A-ZQFT AS3691A a AS3691A-ZSDF2 AS3691A v AS3691B-ZQFP AS3691B ill AS3691B-ZSDF2 AS3691B QFN 24 4x4mm QFN 24 4x4mm Sorted Wafers QFN 24 4x4mm Sorted Wafers G st AS3691A-ZTSP2 AS3691A ePTSSOP s A nt AS3691B-ZTSP AS3691B ePTSSOP Tape and Reel in Dry Pack Trays in Dry Pack Cut Dies on Foil Tape and Reel in Dry Pack Cut Dies on Foil Tape and Reel in Dry Pack Tape and Reel in Dry Pack Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free 10mV on VRES for ON=0 Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free 10mV on VRES for ON=0 Sorted Wafers 10mV on VRES for ON=0 Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free 0mV on VRES for ON=0 Sorted Wafers 0mV on VRES for ON=0 Enhanced Power TSSOP with power pad , Body Size=4.4mm Pitch = 0.65mm, Pb-Free 10mV on VRES for ON=0 Enhanced Power TSSOP with power pad , Body Size=4.4mm Pitch = 0.65mm, Pb-Free 0mV on VRES for ON=0 m te Note 1 a n 2 AS3691 with 10mV on VRES for ON=0 can be marked with ‘AS3691’ or ‘AS3691A’ identical behavior Contact austriamicrosystems for availability co Description: l AS3691V-CPPD ica V AS3691 Version, either A or B AS3691A 10mV on VRESx x=1 to 4 if ONx = 0 see ‘7 Detailed Functional Description’ AS3691B 0mV on VRESx x=1 to 4 if ONx = 0 see ‘7 Detailed Functional Description’ C Temperature range -20°C - 85°C n PP Package QF for QFN, SD for sorted DIEs, TS for enhanced Power TSSOP Tech D Delivery From P for Tape&Reel in Dry Pack, F for cut dies on foil, T for Trays in Dry Pack 21 - 22 AS3691 Datasheet Copyright Copyright 1997-2007, 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.

PDF Datasheet Preview

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:

Please visit our website at

AS3691 Datasheet

Datasheet

AS3691
4 Precision 400mA Current Sources for RGB and Single Color Leds
1 General Description

The AS3691 AS3691A and AS3691B features four

Very wide output voltage current source
high precision current sources for lighting of up to four LED strings RGB or single color leds . Each of the four currents sources can be controlled
lid independently by PWM inputs. The full scale
current value is set by external resistors.
a 2 Key Features
4 x up to 0.4A constant current outputs
v Programmable with external resistors
4 independent PWM inputs
ill Absolute current accuracy
’Automatic Supply Regulation’ to reduce power dissipation1

AG t st 1 Patent Pending
voltage compliance − Down to 0.41V − Up to 15V 2 Integrated overtemperature protection Separate sense pads Rfb1-Rfb4 for easy and precise PCB Layout Package − DIE − QFN24 4x4mm − eP-TSSOP
2 15V is sufficient for most applications as the AS3691 dose not switch off the LED current completely
3 Applications

General Lighting Backlighting RGB Backlighting for LCD TV/Monitors with

White Color Balancing
s n 4 Application Diagrams
m te Figure 1 Application Diagram of AS3691 for Single Color Lighting
a on VDD

Csup 100nF

Rvdd
c Cvdd
100nF
a VREG

UV1 CURR1

UV2 CURR2

UV3 CURR3

UV4 CURR4

VDD UV
ic AS3691
e ePTSSOP Package Drawings and 19 m t DIE 20 a n 11 Ordering Information 21

Owner ptr
- Added Trays as delivery option order code AS3691AZQFT
3 - 22

AS3691 Datasheet
5 Pinout Pin Assignments

Figure 3 Pin Usage

VREG

UV1 CURR1

UV2 CURR2

UV3 CURR3

UV4 CURR4

AS3691
lid D1 Ref
va Overtemp

T1 I1

T2 I2

T3 I3

T4 I4
ill Pad VSS ON1 RFB1 RES1 ON2 RFB2 RES2 ON3 RFB3 RES3 ON4 RFB4 RES4 G st Pin Descriptions

A t Table 1 Pin Type Descriptions
s n Pin Type e AI/O

Analog Pin
m t AI

Analog Input Pin
a n AO

Analog Output Pin

Digital Input

Supply Pin
l c Table 2 Pin Descriptions
a Pin Number Pin Number
ePTSSOP
ic Package

Package

Pin Name

CURR1 RFB1
nc RFB4 CURR4 RES4

Type

AI/O AI nc AI

AI/O AI/O

Current Source 1 Output Connect to current set resistor R1 directly at resistor itself Leave open Connect to current set resistor R4 directly at resistor itself Current Source 4 Output Connect to current set resistor R4
11 Ordering Information
Table 7 Ordering Information

Part Number Marking Package Type Delivery Form

AS3691A 1

AS3691A-ZQFP -orAS3691 1
lid AS3691A-ZQFT AS3691A a AS3691A-ZSDF2 AS3691A v AS3691B-ZQFP AS3691B ill AS3691B-ZSDF2 AS3691B

QFN 24 4x4mm

QFN 24 4x4mm

Sorted Wafers

QFN 24 4x4mm

Sorted Wafers

G st AS3691A-ZTSP2 AS3691A ePTSSOP
s A nt AS3691B-ZTSP AS3691B ePTSSOP

Tape and Reel in Dry Pack

Trays in Dry Pack

Cut Dies on Foil

Tape and Reel in Dry Pack

Cut Dies on Foil

Tape and Reel in Dry Pack

Tape and Reel in Dry Pack

Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free 10mV on VRES for ON=0

Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free 10mV on VRES for ON=0

Sorted Wafers 10mV on VRES for ON=0

Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free 0mV on VRES for ON=0

Sorted Wafers 0mV on VRES for ON=0

Enhanced Power TSSOP with power pad , Body Size=4.4mm

Pitch = 0.65mm, Pb-Free 10mV on VRES for ON=0

Enhanced Power TSSOP with power pad , Body Size=4.4mm

Pitch = 0.65mm, Pb-Free 0mV on VRES for ON=0
m te Note 1 a n 2

AS3691 with 10mV on VRES for ON=0 can be marked with ‘AS3691’ or ‘AS3691A’ identical behavior Contact austriamicrosystems for availability
co Description:
l AS3691V-CPPD
ica V

AS3691 Version, either A or B AS3691A 10mV on VRESx x=1 to 4 if ONx = 0 see ‘7 Detailed Functional Description’ AS3691B 0mV on VRESx x=1 to 4 if ONx = 0 see ‘7 Detailed Functional Description’

C Temperature range -20°C - 85°C
n PP Package QF for QFN, SD for sorted DIEs, TS for enhanced Power TSSOP

Tech D Delivery From P for Tape&Reel in Dry Pack, F for cut dies on foil, T for Trays in Dry Pack
21 - 22

AS3691 Datasheet

Copyright

Copyright 1997-2007, 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.

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 AS3691A-ZQFP Datasheet file may be downloaded here without warranties.

Datasheet ID: AS3691A-ZQFP 519702