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T6326A

Taiwan Memory Technology
Part Number T6326A
Manufacturer Taiwan Memory Technology
Description Constant-Current White LED
Published Jan 12, 2009
Detailed Description tm TE CH Preliminary T6326A Low-Dropout, Constant-Current White LED with Channel Control FEATURES • Up to 400mA LED B...
Datasheet PDF File T6326A PDF File

T6326A
T6326A

Overview
tm TE CH Preliminary T6326A Low-Dropout, Constant-Current White LED with Channel Control FEATURES • Up to 400mA LED Bias Current • 3% LED Current Matching • Simple LED Brightness Control www.
DataSheet4U.
com • Low 0.
05uA Shutdown Current • 3V to 5.
5V Supply Voltage Range • MSOP-10L Package • Output channel : MSOP-10L package for four channel • LED1~4 Channels ON / OFF states: T6326A-AM with 16 channel states T6326A-BM with 5 channel states • Build in Thermal Protect 140 °C GRNERAL DESCRIPTION The T6326A low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs.
The T6326A with internal channel on/off select function.
The T6326A uses a single resistor to set the bias current for four LEDs, which are matched to 3%.
The T6326A advantages over ballast resistors include significantly better LED to LED bias matching, much lower bias variation with supply voltage variation, significantly lower dropout voltage, and in some applications, significantly improved efficiency.
The T6326A is available in MSOP-10L package.
Applications • Cellular Phones • Portable Communication Devices • Handheld Electronics • Digital Cameras • PDAs • LED/Display Back Light Driver • LEDs for Camera Flash PART NUMBER EXAMPLES PART NO.
T6326A-AM T6326A-BM PACKAGE MSOP-10L MSOP-10L ON states 16 5 TM Technology Inc.
reserves the right P.
1 to change products or specifications without notice.
Publication Date: FEB.
2006 Revision: A tm VSET LED1 LED2 LED3 www.
DataSheet4U.
com TE CH Preliminary T6326A PIN ARRANGEMENT(Top view) 1 2 3 4 5 10 9 8 7 6 CH SW EN VDD VSS VSS LED4 MSOP-10L PIN DESCRIPTION SYMBOL MSOP -10L DESCRIPTION VSET terminal is used to connect an extermal resistor to set output current.
The current flowing into VSET sets the bias current into each LED by ILED_= 250 x ISET.
VSET is internally biased to 0.
306V.
VSET is high impedance when EN is low.
LED 1 Cathode Connection.
Current flowing ...


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