MIC79110-4.2YMLTR Micrel Semiconductor, MIC79110-4.2YMLTR Datasheet

MIC79110-4.2YMLTR

Manufacturer Part Number

MIC79110-4.2YMLTR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC79110-4.2BMLTR.pdf (14 pages)

Specifications of MIC79110-4.2YMLTR

Date_code

06+

Packing_info

33D-10L

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General Description

The Micrel MIC79110 is a simple and accurate lithium ion

battery charger. The part features a built-in pass transistor,

precision programmable current limiting (±5%), and

precision voltage termination (±0.75% over temperature).

The MIC79110 packs full functionality into a small space.

Other features of the MIC79110 include two independent

indicators:

programmable with a resistor to ground, and an analog

current output that is proportional to the output current,

allowing for monitoring of the actual charging current.

Additional features include very low dropout (550mV over

the temperature range), thermal shutdown, and reverse

polarity protection. In the event the input voltage to the

charger is disconnected, the MIC79110 also provides

minimal reverse-current and reversed-battery protection.

Available in both ﬁxed 4.2V and adjustable outputs, the

MIC79110 is offered in the leadless 10-pin 3mm x 3mm

MLF

–40˚C to +125˚C.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

___________________________________________________________________________________________________________

Typical Application

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

October 2007

with an operating junction temperature range of

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

digital

End-of-Charge

SHUTDOWN

ENABLE

signal

MIC79110 Typical Application

that

EOC

SET

MIC79110

GND

SNS

BAT

CHG

EOC

Features

• Input voltage range: 2.5V to 16V

• High output voltage accuracy of ±0.75%

• Current limit ±5% accurate from –5°C ≤ T

• Programmable end-of-charge flag

• Analog output proportional to output current

• Adjustable and fixed 4.2V output

• Low dropout voltage of 550mV at 700mA load, over

• 1.2A max charge current

• Excellent line and load regulation specifications

• Reverse current protection

• Thermal shutdown and current limit protection

• Tiny 10-Pin 3mm × 3mm MLF

• Junction temperature range: –40°C to +125°C

Applications

•

408

Simple 1.2A Linear Li-Ion Battery Charger

over –5°C to +60˚C

temperature

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

Cellular phones

PDAs

Digital cameras

Camcorders

MP3 players

Notebook PCs

Portable Meters

Cradle chargers

Car chargers

Battery packs

4.2V

Li-Ion

Cell

4.2V

MIC79110

BAT

package

M9999-102507

≤ + 125°C

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