MCP73837 Microchip Technology, Inc., MCP73837 Datasheet - Page 14

• Manufacturer Part Number: MCP73837
• Manufacturer: Microchip Technology, Inc.

MCP73837/8
3.8
The MCP73837/8 USB-Port current regulation set
input (PROG2) is a digital input selection. A logic Low
selects a 1 unit load charge current; a logic High selects
a 5 unit loads charge current.
PROG2 also functions as the set point of precondition
and termination when USB-Port is present. When
PROG2 is floating, the MCP73837/8 enters in stand-by
mode.
3.9
Power Good (PG) is available only on MCP73837. PG
is an open-drain logic output for connection to a LED
for input power supply indication. Alternatively, a pull-
up resistor can be applied for interfacing to a host
microcontroller.
DS22071A-page 14
USB-Port Current Regulation Set
(PROG2)
Power Good (PG)
3.10
Timer Enable (TE) is available only on MCP73838.
(TE) enables the built-in safety timer when pull low and
disables the built-in safety timer when pull high.
3.11
MCP73837/8
temperature during a charge cycle by measuring the
voltage between the THERM and V
50 µA current source provides the bias for the most
common
thermistors (NTC).
Note:
Timer Enable (TE)
Battery Temperature Monitor
(THERM)
10 kΩ
The built-in safety timer is available for both
MCP73837 and MCP73838 in the following
options: Disable, 4 HR, 6 HR, and 8 HR.
continuously
negative-temperature
© 2007 Microchip Technology Inc.
monitors
SS
pins. An internal
the
coefficient
battery