November 2004

1

MIC2210

MIC2210

Micrel

MIC2210

Dual µCap LDO with Open-Drain Driver

REV. 11/04

General Description

The MIC2210 is a dual µCap low dropout regulator with an

open-draindriverandpower-onresetcircuit.Thefirstregulator

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

source up to 300mA and includes a power-on reset function.

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

backlighting applications.

Idealforbatteryoperatedapplications,theMIC2210offers1%

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

and extremely low ground current, only 48µAtotal. Equipped

with a TTL logic compatible enable pin*, the MIC2210 can

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

when disabled.

The MIC2210 is a µCap design, operating with very small

ceramic output capacitors for stability, reducing required

board space and component cost.

The MIC2210 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.

* For each output.

Typical Application

MIC2210 Typical Cellphone Application

Features

• Input voltage range: 2.25V to 5.5V

• Stable with ceramic output capacitor

• 2 LDO outputs

• Output 1 - 150mA output current

• Output 2 - 300mA output current

• 1 Open-drain driver

• 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 10-pin 3mm × 3mm MLF™ 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, Inc.

VIN

EN1

EN2

CBYP

SW

LED x10

Keyboard

Backlight

Baseband IC

VOUT1

Audio Amp

VOUT2

ERR

DRV

GND

MIC2210-xxBML

1 F

1 F