General Description
The AMC7136 is a constant current regulator for
driving LEDs with low quiescent current and low
dropout voltage. The current is adjustable from
10mA to 400mA with an external resistor.
Only one external resistor is required to achieve a
constant current LED driver.
Soft start, thermal protection and low voltage
protection are also provided.
A driver pin DR is provided for current and
voltage extension. Adding an external NMOS or
NPN transistor to this pin can extend current and
voltage range.

Features
y Sink current: 10mA to 400mA adjustable
with an external resistor
y Current and voltage range extendable by
adding an external NMOS or NPN transistor
y Power supply voltage: 2.7-6V
y Low drop out voltage: 100mV@350mA
y Low quiescent current: 250uA
y Thermal protection
y Soft start
y Low voltage protection: 2.5V
y SOT-89-5 package

Applications
y Power Led driver