October 2005

1

M9999-101705

MIC2213

Micrel, Inc.

MIC2213

Sequenced Portable Power Management IC

General Description

The MIC2213 is a dual µCap low dropout regulator with an

open-drain driver and power-on reset circuit. The first regula-

tor is capable of sourcing 150mA, while the second regulator

can source up to 300mA. A power-on reset function monitors

both outputs, indicating a fault on either output 1 or output 2.

The open-drain output is capable of sinking 150mA for LED

backlighting applications.

The MIC2213 adds the additional feature of sequencing

between the outputs, with the output of regulator 1 having to

settle before the output of regulator 2 can begin to turn-on.

Idealforbatteryoperatedapplications,theMIC2213offers1%

accuracy, extremely low dropout voltage (80mV @ 100mA),

and extremely low ground current, only 48µAtotal. Equipped

with a TTL logic compatible enable pin, the MIC2213 can be

put into a zero-off-mode current state, drawing no current

when disabled.

The MIC2213 is a µCap design, operating with very small

ceramic output capacitors for stability, reducing required

board space and component cost.

The MIC2213 is available in fixed output voltages in the

10-pin 3mm × 3mm MLF™ leadless package and is also

available with adjustable output voltages in the 4mm × 4mm

16-pin MLF™ package.

Typical Application

VIN

EN

CBYP

SW

0.01µF

1µF

100kΩ

SET

Keyboard Backlighting LED

Baseband

VOUT1

VOUT2

POR

/RST

DRV

GND

MIC2213-xxBML

1µF

OFF

ON

OFF

ON

MEMORY

Ceramic

Processor

MIC2213 Typical Cellphone Application

Features

• 2 LDO outputs

• Output 1 - 150mA output current

• Output 2 - 300mA output current

• 1 Open-drain driver

• Power-on reset function with adjustable delay time

•

Sequencing between outputs 1 and 2

• Input voltage range: 2.25V to 5.5V

• Stable with ceramic output capacitor

• Low dropout voltage of 80mV @ 100mA

•

Ultra-low quiescent current of 48µA

• High output accuracy:

• +1.0% initial accuracy

• +2.0% over temperature

• Thermal Shutdown Protection

• Current Limit Protection

•

Tiny 3mm × 3mm MLF™-10 package

Applications

• Cellular/PCS phones

• Wireless modems

• PDAs

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

MicroLeadFrame and MLF are trademarks of Amkor Technology.