General Description

The LP6250 is high efficiency Synchronous Boost

DC/DC Converter, fixed frequency, current-mode

step-up converter with output to input disconnect. A

PWM step-up DC/DC converters optimized to

provide a high efficiency solution to medium power

system. Its PWM circuitry with built-in

2.1A@250mΩ power mosfet makes this converter

highly power efficiently. Selectable high switching

frequency allows faster loop response and easy

filtering with a low noise output. The non-inverting

input its error amplifier is connected to an internal

0.5V precision reference voltage. Soft-start time can

be programmed with an external capacitor, which

sets the input current ramp rate. Current mode

control and external compensation network make it

easy and flexible to stabilize the system. the devices

regulates the output voltage up to 5V from either a

2cell NiMH/NiCd or a single-cell Li-ion Battery

with a 500KHz fixed frequency switching. These

features minimize overall solution footprint by

allowing the use of tiny, low profile inductors and

ceramic capacitors.

Features

‹ Up to 94 efficiency　

‹ Shut-down current:<1uA 　

‹ Output voltage Up to 5V

‹ 500KHz fixed frequency switching

‹ High switch on current:2.1A@250mΩ

‹ Available in TDFN-10 Package

Applications

-Battery products

-Host Products

-Motor Power Devices