General Description

The MIC2141 is a micropower boost switching regulator that can operate from 3- or 4-cell nickel-metal-hydride batteries or a single Li-ion cell. This regulator employs a constant 330kHz, fixed 18 duty-cycle, gated-oscillator architecture.

Features

• Implements low-power boost, SEPIC, or flyback

• 2.5V to 14V input voltage

• 330kHz switching frequency

• <2µA shutdown current

• 70µA quiescent current

• 1.24V bandgap reference

• typical output current 1mA to 10mA

• SOT-23-5 Package

Applications

• LCD bias supply

• CCD digital camera supply