AME5144 Datasheet, PDF (2/15 Pages) AMETHERM Circuit Protection Thermistors – High Efficiency, 37V Step-Up Converter for 2 to 10 White LEDs

AME
AME5144
n Typical Application
High Efficiency, 37V Step-Up
Converter for 2 to 10 White LEDs
VIN
C_IN
2.2µF
Analog or
PWM Dimming
200Hz to 30KHz
L=22µH
OUT
SW
AME5144
IN
PGND
CTRL
GND
Output
Up to 37V
COUT
0.1µF
CS
COMP
CCOMP
0.1µF
2 to 10 LEDs
RSENSE
13Ω
n Function Block Diagram
CTRL
170mV
CS
GND
8.2ms
Shutdown
Bright
Control
Gm
Ramp
Generator
Oscillator
OVLO
PWM
Control
Driver
Current
Limit
UVP
Comp
OUT
SW
PGND
IN
2
Rev. D.01