MIC5232

10mA Ultra-Low Quiescent Current

µCap LDO

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

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

June 2012

M9999-061812-C

General Description

The MIC5232 is an ultra-low quiescent current, low-

dropout linear regulator that is capable of operating

from a single-cell lithium ion battery. Consuming only

MIC5232 is ideal for stand-by applications like

powering real-time clocks or memory in battery

operated electronics.

The MIC5232 is capable of providing 10mA of output

current and has low output noise, providing a small,

efficient solution ideal for any keep-alive application.

This includes reverse current protection, keeping

The MIC5232 is a µCap design, operating with very

small ceramic output capacitors for stability, reduction

of required board space and component cost.

The MIC5232 is available in fixed output voltages in

the miniature 6-pin 2mm x 2mm MLF

thin SOT-23-5 package with an operating junction

temperature range of -40°C to 125°C.

Features

 Input voltage range: 2.7V to 7.0V

 Stable with 0.47µF ceramic output capacitor

 Low dropout voltage of 100mV @ 10mA

 Reverse Battery Protection

 High output accuracy:

– +2.0% initial accuracy

– +3.0% over temperature

 Logic-Level Enable Input

 Miniature 6-pin 2mm x 2mm MLF package

 Lead-Free Thin SOT-23-5 Package

 Tight Load and Line Regulation

Applications

 Real-Time Clock Power Supply

 Stand-by Power Supply

 SRAM Memory Back-up Supply

 Cellular Telephones and Notebook Computers

Typical Application

VIN

VOUT

EN

GND

MIC5232-1.2YD5

3.6V

1.2V

0.47µF

ceramic

1µF

1.5 Real-Time Clock Back-up Supply

0

0.3

0.6

0.9

1.2

1.5

1.8

2.1

2.4

2.7

3.0

2.5 3 3.5 4 4.5 5 5.5 6 6.5 7

INPUT VOLTAGE (V)

Ground Pin Current

vs. Input Voltage