User manual

MCP73113 OVP SINGLE-CELL LI-ION

BATTERY CHARGER EVALUATION

BOARD USER’S GUIDE

Chapter 2. Installation and Operation

2.1 INTRODUCTION

The MCP73113 is a highly integrated Li-Ion battery charge management controller for

use in space-limited and cost-sensitive applications. The MCP73113 provides specific

charge algorithms for Li-Ion / Li-Polymer batteries to achieve optimal capacity and

safety in the shortest charging time possible. Along with its small physical size, the low

number of external components makes the MCP73113 ideally suitable for portable

applications.

The absolute maximum voltage, up to 18V, allows the use of MCP73113 in harsh

environments, such as low cost wall wart.

The MCP73113 employs a constant current / constant voltage charge algorithm. The

various charging voltage regulations provide design engineers flexibility to use in

different applications. The fast charge, constant current value is set with one external

resistor from 130 mA to 1100 mA. The MCP73113 limits the charge current based on

die temperature during high power or high ambient conditions. This thermal regulation

optimizes the charge cycle time while maintaining device reliability.

The PROG pin of the MCP73113 also serves as enable pin. When high impedance is

applied, the MCP73113 will be in standby mode.

Typical applications for the reference design are Smart Phones, PDA, Portable Media

Players, MP3 Players, Digital Cameras, Handheld Medical devices, Bluetooth

headsets and Portable Communicators.

2.2 FEATURES

The MCP73113 OVP Single-Cell Li-Ion Battery Charger Evaluation Board has the

following features:

• 6.5V Input Over Voltage Protection

• 10% Preconditioning of deeply depleted cells

• 32-Minute Preconditioning Timer

• 6-Hour Safety Timer

• 10% Automatic Charge Termination

• 500 mA and 1000 mA Preset Fast Charge Current

• Automatic Recharge

• Thermal Regulation

• One Blue LED indicates charge status

• Small DFN packages with Exposed Pad as additional heat sink