General Description

The MIC5268 is an efficient, precise CMOS voltage

regulator with power good output. The MIC5268 offers

better than 3% initial accuracy, and constant ground

current (typically 100µA) over load.

The MIC5268 also works with low-ESR ceramic

capacitors, reducing the amount of board space necessary

for power applications, critical in hand-held wireless

devices.

Key features include current limit, thermal shutdown, a

push-pull output for faster transient response, and an

active clamp to speed up device turnoff. Available in the

IttyBitty™ SOT-23-5 package, the MIC5268 is a fixed 1.2V

regulator.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Features

• Power Good indicator

• Load independent, ultra-low ground current: 100µA

• 150mA output current

• Current limiting

• Thermal shutdown

• Tight load and line regulation

• “Zero” off-mode current

• Stability with low-ESR capacitors

• Fast transient response

• TTL-Logic-controlled enable input

Applications

• Processor power-up sequencing

• Laptop, notebook, and palmtop computers

• PCMCIA VCC and VPP regulation/switching