MCP73871-2CCISLASHML datasheet(24/38 Pages) MICROCHIP

Part #	MCP73871-2CCI/ML

Description	Stand-Alone System Load Sharing and Li-Ion / Li-Polymer Battery Charge Management Controller

PDF	38 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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24 / 38 page

MCP73871

DS22090B-page 24

5.2.3

USB PORT CURRENT

REGULATION SELECT (PROG2)

Driving the PROG2 input to a logic Low selects the low

USB port source current setting (maximum 100 mA).

Driving the PROG2 input to a logic High selects the

high USB port source current setting (Maximum

500 mA).

5.2.4

POWER-GOOD (PG)

The power-good (PG) option is a pseudo open-drain

output. The PG output can sink current, but not source

current. However, there is a diode path back to the

input, and as such, the output should only be pulled up

to the input. The PG output is low whenever the input

to the MCP73871 device is above the UVLO threshold

and greater than the battery voltage. The PG output

can be used as an indication to the system that an input

source other than the battery is supplying power.

5.2.5

TIMER ENABLE (TE) OPTION

The timer enable (TE) input option is used to enable or

disable the internal timer. A low signal on this pin

enables the internal timer and a high signal disables

the internal timer. The TE input can be used to disable

the timer when the charger is supplying current to

charge the battery and power the system load. The TE

input is compatible with 1.8V logic.

MCP73871-2CCI/ML Datasheet(PDF) 24 Page - Microchip Technology