August 2004

1

MIC2214

MIC2214

Micrel

MIC2214

Portable Power Management IC

General Description

The MIC2214 is a dual

µCap, low dropout regulator with an

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

lator is capable of sourcing 150mA, while the second regula-

tor 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.

Ideal for battery operated applications, the MIC2214 offers

1% accuracy, extremely low dropout voltage (80mV @

100mA), and extremely low ground current, only 48

µA total.

Equipped with a TTL-logic-compatible enable pin, the MIC2214

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

current when disabled.

The MIC2214 is a

µCap design, operating with very small

ceramic output capacitors for stability, reducing required

board space and component cost.

The MIC2214 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

0.01

µF

1

µF

100k

Ω

SET

Keyboard Backlighting LED

Baseband

µProcessor

VOUT1

VOUT2

POR

/RST

DRV

GND

MIC2214-xxBML

1

µF

Ceramic

OFF

ON

OFF

ON

MEMORY

MIC2214 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

• Power-on reset function with adjustable delay time

• Low dropout voltage of 80mV @ 100mA

• Ultra-low quiescent current of 48

• 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. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com