t6327a TM Technology Inc., t6327a Datasheet - Page 5

• Manufacturer Part Number: t6327a
• Description: Low-dropout, Constant-current White Led With Dimming Control
• Manufacturer: TM Technology Inc.

tm
Applications Information
directly. This is the least expensive and most efficient architecture. Due to the high forward voltage of white
LEDs, the LED dimming may dim slightly at the end of battery life. The T6327A current regulating
architecture and low dropout greatly minimize this effect compared to using simple ballast resistors.
TYPICAL APPLICATION CIRCUITS
TM Technology Inc. reserves the right
to change products or specifications without notice.
Very Low-Cost, High-Efficiency Solution . A battery (single Li+ or three NiMH cells) powers the LEDs
CH
TE
Very low-cost, high-efficiency solution for TO-252 package
SW
Very low-cost, high-efficiency solution for SOP-8 package
SW
LED1
SET
GND
T6327A
SET
RSET
T6327A
LED2
TEST
VDD
LED
P. 5
GN D
RSET
VD D
V
V
IN
IN
Rs
2.7V~6V
2.7V ~6V
R
S
0.1uF
0.1uF
Publication Date: MAR. 2008
T6327A
Revision: A