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