PAM2845 Datasheet, PDF (2/14 Pages) Power Analog Micoelectronics – 40V High Power Boost Convertor with 6 Channel Constant Current Source

Block Diagram
VIN
PAM2845
40V High Power Boost Convertor
with 6 Channel Constant Current Source
Vcc-5V
Vcc-driver
ENA
VC
PWMD
LDO1
LDO2
ENABLE
UVLO
OTP
Bandgap
POR
PWM DIMMING
SOFT START
1.6MHz
800KHz
500KHz
1.2V ^EA
SLOPE
COMPENSATION
PWM
COMPATATOR
+
MAIN
CONTROL
Level Shift _Driver
CURRENT
LIMIT
CS AMP
I_set AMP
Iset
led short protect led short protect led short protect led short protect led short protect led short protect
FB
Fsel
SW
PGND
LED1
LED2
LED3
LED4
LED5
LED6
GND
Power Analog Microelectronics,Inc
www.poweranalog.com
2
08/2008 Rev 1.0