MIC79110

Features:

•Input voltage range: 2.5V to 16V
•High output voltage accuracy of ±0.75% over 5°C to+60˚C and ±1.5% over temperature
•Current Limit ±5% accurate from 5°C Tj + 125°C
•Programmable End-of-Charge Flag
•Analog output proportional to output current
•Adjustable and Fixed 4.2V Output
•Low dropout voltage of 500mV at 700mA load, overtemperature
•1.2A output current
•Excellent line and load regulation specifications
•Reverse current and reverse battery protection
•Thermal shutdown and current limit protection
•Tiny 3mm *3mm MLF™-10 package
•Junction Temperature Range:  40°C to +125°C


Application

•Cellular phones
•PDAs
•Digital cameras
•Camcorders
•MP3 players
•Notebook PCs
•Portable Meters
•Cradle chargers
•Car chargers
•Battery packs


Pinout




Specifications

Input Supply Voltage (VIN)..................................0V to 18V
Shutdown Input Voltage (V)................................0V to 18V
Output Voltage (ADJ)....................................................10V
Power Dissipation...................................Internally Limited
Junction Temperature..........................40°C to +125°C


Description

The Micrel MIC79110 is a simple and accurate lithium ionbattery charger.  Featuring a built-in pass transistor, precisionprogrammable current limiting (±5%), and precision voltagetermination (±1.5% over temperature) all in a very smallpackage, the MIC79110 packs full functionality into a smallspace.

Other features of the MIC79110 include two independentend-of-charge indications, including a digital indication that isprogrammable with a resistor-toground and an analog cur-rent output that is proportional to the output current, allowingfor monitoring of the actual charging current.  Additionalfeatures include verylow dropout (500mV over the tempera-ture range), thermal shutdown, and reverse polarity protec-tion. In the event the input voltage to the charger is discon-nected, the MIC79110 also provides minimal reverse-currentand reversed-battery protection.

Available in both fixed 4.2V and adjustable outputs, theMIC79110 is offered in the leadless 3mm x 3mm MLF-10 with an operating junction temperature range of 40˚C to +125˚C.