t6309a TM Technology Inc., t6309a Datasheet - Page 4

• Manufacturer Part Number: t6309a
• Description: Micropower Step-up Dc/dc Converter
• Manufacturer: TM Technology Inc.

5.0V/Div
5.0V/Div
Stability for driving 4LED / Vin=3.0V
1.0V/Div
Stability for driving 4LED / Vin=5.2V
1.0V/Div
Vsw
Vsw
Vout
Vout
tm
Typical Operating Characteristics
(VIN=+3.3V,Load=4 LEDs, L=10uH, C
TM Technology Inc. reserves the right
to change products or specifications without notice.
90
85
80
75
70
65
60
2.0
CH
TE
2.5
Efficiency (4WLED)
3.0
Vin(V)
3.5
(time=1.0us/Div)
(time=1.0us/Div)
4.0
IN
4.5
=4.7uF, C
Io=20mA
5.0
OUT
P. 4
5.0V/D iv
Stability for driving 4LED / Vin=3.6V
1.0V /Div
=4.7uF, T A=+25 ºC, unless otherwise noted.)
Vsw
Vout
0.43
0.42
0.41
0.39
0.38
0.4
-30 -20 -10 0
VFB Temperature curve
Temperature (°C)
Publication Date: MAY. 2007
10 20 30 40 50 60 70
(tim e=1.0us/D iv)
T6309A
Revision: A
Vin=3.1V
Load 4LED