MCP73871-2AAI/SS Microchip Technology, MCP73871-2AAI/SS Datasheet - Page 21

Manufacturer Part Number

MCP73871-2AAI/SS

Description

USB/AC Battery Charger With Power Path Management 20 SSOP .209in TUBE

Manufacturer

Microchip Technology

Datasheet

1.MCP73871-2CCIML.pdf (32 pages)

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

5.2.3

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

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.

USB PORT CURRENT

REGULATION SELECT (PROG2)

POWER-GOOD (PG)

5.2.5

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.

TIMER ENABLE (TE) OPTION

MCP73871

DS22090A-page 21