PT6937 Datasheet, PDF (2/15 Pages) Princeton Technology Corp – White LED Step-Up Converter

White LED Step-Up Converter
BLOCK DIAGRAM
VIN
FB
5
3
VREF
1.25V
95mV ^A1
+
/SHDN
4
SHUTDOWN
Tel: [phone]
Fax: [phone]
URL: http://www.princeton.com.tw
PT6937
1 _SW
COMPARATOR
DRIVER
A2
R
Q
M1
Rc
+
S
Cc
0.2
RAMP
GENERATOR
1.2MHz
OSCILLATOR
2 GND
PT6937 V1.1
-2-
March, 2006