© 2009 Microchip Technology Inc.

DS22183B-page 15

MCP73113/4

4.0

DEVICE OVERVIEW

The MCP73113/4 are simple, but fully integrated linear charge management controllers. Figure 4-1 depicts the

operational flow algorithm.

FIGURE 4-1:

The MCP73113/4 Flow Chart.

Timer Expired

SHUTDOWN MODE

or

PROG > 200 k

Ω

STAT = HI-Z

TEMPERATURE FAULT

No Charge Current

STAT = Flashing (Op.1)

STAT = Hi-Z (Op.2)

Timer Suspended

TIMER FAULT

No Charge Current

STAT = Flashing (Op.1)

STAT = Hi-Z (Op.2)

Timer Suspended

PRECONDITIONING MODE

STAT = LOW

Timer Reset

Timer Enable

FAST CHARGE MODE

STAT = LOW

Timer Reset

Timer Enabled

CONSTANT VOLTAGE MODE

STAT = LOW

CHARGE COMPLETE MODE

No Charge Current

STAT = HI-Z

Timer Reset

OVERVOLTAGE PROTECTION

No Charge Current

STAT = Hi-Z

Timer Suspended

Timer Expired

TIMER FAULT

No Charge Current

STAT = Flashing (Op.1)

STAT = Hi-Z (Op.2)

Timer Suspended

Charge Mode Resume

BATTERY SHORT PROTECTION

STAT = Flashing (Op.1)

STAT = Hi-Z (Op.2)

Timer Suspended

Charge Mode Resume