t6327a TM Technology Inc., t6327a Datasheet

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t6327a

Manufacturer Part Number
t6327a
Description
Low-dropout, Constant-current White Led With Dimming Control
Manufacturer
TM Technology Inc.
Datasheet
tm
FEATURES
• Up to 350mA LED Bias Current
• Constant Current Option :
• Simple LED Dimming Control
• Build in Morse Code S.O.S Signal
• Low Dropout Voltage
• Low 0.05uA Shutdown Current
• 2.7V to 6V Supply Voltage Range
• TO-252 and SOP-8 lead-free Package
• ESD Human Body Mode Over 5KV
• Build in Thermal Protect 160
APPLICATIONS
• Handheld Electronics
• Flash Light
• Lighting
TM Technology Inc. reserves the right
to change products or specifications without notice.
-
- RSET :
and Single Flash Loop Flicker Function
20/60/100/120/175/210/240/260
/300/350 mA
external
CH
TE
resistor
to set output current
°C
P. 1
PART NUMBER EXAMPLES
GENERAL DESCRIPTION
The T6327A low-dropout bias supply for
white LEDs is a high-performance alternative
to the simple ballast resistors used in
conventional white LED designs. The T6327A
with internal LED dimming function. The
T6327A Build in Morse Code S.O.S Signal
and Single Flash Loop Flicker Function,
significantly lower dropout voltage, and in
some applications, significantly improved
efficiency. The T6327A is available in TO-252
and SOP-8 lead-free package.
a : Device Number
b : Dimming step
c : Output current
d : Flicker Function
e : package
f : G=lead-free
T 6 3 2 7 A -3 0 2 0 A W G
W=TO-252, D=SOP-8
3=3step, 2=2step, 1=1step
020=20mA, 060=60mA, 100=100mA,
120=120mA, 175=175mA, ,210=210mA,
240=240mA, 260=260mA, ,300=300mA,
350=350mA, none=external resistor
A=S.O.S, B=flash/1Hz, C=flash/4Hz,
White LED with Dimming Control
a
Low-Dropout, Constant-Current
b
c
Publication Date: MAR. 2008
d e f
T6327A
Revision: A

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t6327a Summary of contents

Page 1

... LED dimming function. The T6327A Build in Morse Code S.O.S Signal and Single Flash Loop Flicker Function, significantly lower dropout voltage, and in some applications, significantly improved efficiency. The T6327A is available in TO-252 and SOP-8 lead-free package. °C PART NUMBER EXAMPLES ...

Page 2

... Test pin, initial pull low, if pull high active test mode NC: No connection for internal resistor 8 RSET : external resistor to set output current RSET terminal is used to connect an external resistor to set output current. Ground 6 Power supply LED Cathode Connection. 7 Control dimming and flicker mode P. 2 DESCRIPTION Publication Date: MAR. 2008 T6327A Revision: A ...

Page 3

... TM Technology Inc. reserves the right to change products or specifications without notice. = +70° Conditions power supply input I =400uA, no loading SET T6327A-350 T6327A-300 T6327A-260 T6327A-240 T6327A-210 VDD = 4.5V VLED =3.5V T6327A-175 T6327A-120 T6327A-100 T6327A-060 T6327A-020 V = 3.3V, VDD=0V, T LED V >V for enable, VDD=5V SET IH V <V for disable, VDD=5V SET T6327A ...

Page 4

... TE CH Functional Description The T6327A provides constant current bias supply for white LED designs. The T6327A Build in Morse Code S.O.S Signal and Single Flash Loop Flicker Function. The T6327A offers several advantages over using ballast resistors, such as improved LED dimming, lower bias ...

Page 5

... 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. ...

Page 6

... TM Technology Inc. reserves the right to change products or specifications without notice Dimension in mm Max. Min. Max. 0.094 2.20 2.40 0.050 1.00 1.27 0.24 0.40 0.60 0.213 5.20 5.40 0.023 0.43 0.58 0.023 0.43 0.58 0.224 5.40 5.70 3.80 (REF.) 0.262 6.35 6.65 3.80 (REF.) 1.27 (TYP.) 5.08 (TYP.) 0.338 7.94 8.6 0.070 1.40 1.78 0.047 1.09 1.19 0.060 1.30 1. T6327A D1 Publication Date: MAR. 2008 Revision: A ...

Page 7

... Dimension in inch Max. Min. Typ. 6.30 0.224 0.236 4.10 0.148 0.156 5. 0.050 1.80 - 1.75 0.052 0.061 0.25 0.001 0.51 0.012 0.016 0.70 0.012 0.020 0.25 0.004 0.006 0.088 REF 0.117 REF 0~8° Max. 0.248 0.164 - 0.202 - - 0.071 0.069 - 0.004 0.020 0.028 0.010 Publication Date: MAR. 2008 T6327A Revision: A ...

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