APM8601 (NRND)

Description

The APM8601 is a dual input channel linear Li-Ion charger for portable equipment that is optimized for small form-factor applications. The charge algorithm in the APM8601 covers all the charge requirements for a single Li-Ion battery cell. Included is pre-charging for deeply discharged cells, constant current / constant voltage fast charging and a top-off feature to bring the cell safely to a full-charge level. The battery is constantly monitored for overvoltage, charge time and cell temperature to ensure safe charging. A fault is triggered once the charge time exceeds a value that is programmable using a single capacitor and the temperature measurement is achieved through a thermistor positioned close to the battery cell. The APM8601 automatically selects the USB or DC input, depending on which is valid (DC has priority if both are valid). The charging current from the USB input is set to 100mA or 500mA based on the logic level of the USEL input. The APM8601 is packaged in U-DFN3030-14 package with a thermal pad.

Feature(s)

Linear Lithium Ion / Lithium Polymer charging IC

Supply input safe up to 28V

Fast charging with maximum current of 1A

100mA/500mA USB charge current selected with USEL

Resistor-programmable charging current

Resistor programmable end-of-charge

Capacitor programmable charge timer

Three charge indicator pins for a status display

Thermal protection

DFN3030-14: Available in “Green” Molding Compound (No Br, Sb)

Lead Free Finish/ RoHS Compliant

Application(s)

Handheld Consumer Devices

Cell Phones, PDAs, MP3 Players

Handheld Test Equipment

Digital Still Cameras

Multimedia players