General Description

The MIC79050 is a simple single-cell lithium-ion battery charger. It includes an on-chip pass transistor for high precision charging. Featuring ultrahigh precision (+0.75 over the Li-ion battery charging temperature range) and “zero” off mode current, the MIC79050 provides a very simple, cost effective solution for charging lithium-ion battery.

Features

• High accuracy charge voltage: ±0.75 over -5°C to + 60°C (Li-ion charging temperature range)

• “Zero” off-mode current

• 10µA reverse leakage

• Ultralow 380mV dropout at 500mA

• Wide input voltage range

• Logic controlled enable input (8-pin devices only)

• Thermal shutdown and current limit protection

• Power MSOP-8, Power SOIC-8, and SOT-223

• Pulse charging capability

Applications

• Li-ion battery charger

• Celluar phones

• Palmtop computers

• PDAs

• Self charging battery packs