UM3500
600mA, 1.
5MHz, Synchronous Step-Down DC-DC Converter
UM3500 SOT23-5
General Description
The UM3500 is a 1.
5MHz constant frequency, slope compensated current mode PWM step-down converter.
The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode.
It is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery.
The UM3500 can supply 600mA of load current from a 2.
5V to 5.
5V input
voltage.
The output
voltage can be regulated as low as 0.
6V.
The UM3500 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system.
Pulse Skipping Mode operation at light lo...