Datasheet
2009-2013 Microchip Technology Inc. DS20002183E-page 13
MCP73113/4
3.0 PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PIN FUNCTION TABLES
3.1 Battery Management Input Supply
(V
DD
)
A supply voltage of [V
REG
(Typical) + 0.3V] to 6.0V is
recommended. Bypass to V
SS
with a minimum of 1 µF.
The V
DD
pin is rated 18V absolute maximum to prevent
sudden rise of input voltage from spikes or low-cost
AC-DC wall adapter.
3.2 Battery Charge Control Output
(V
BAT
)
Connect to the positive terminal of the battery. Bypass
to V
SS
with a minimum of 1 µF to ensure loop stability
when the battery is disconnected.
3.3 No Connect (NC)
No connect.
3.4 Battery Management 0V Reference
(V
SS
)
Connect to the negative terminal of the battery and
input supply.
3.5 Status Output (STAT)
STAT is an open-drain logic output for connection to an
LED for charge status indication in stand-alone
applications. Alternatively, a pull-up resistor can be
applied for interfacing to a host microcontroller. Refer to
Table 5-2 for a summary of the status output during a
charge cycle.
3.6 Current Regulation Set (PROG)
The fast charge current is set by placing a resistor from
PROG to V
SS
during Constant-Current (CC) mode.
PROG pin is rated up to 5V with 6V absolute maximum
value.
The PROG pin also serves as a charge control enable
pin. Allowing the PROG pin to float or connecting the
pin to an impedance greater than 200 k will disable
the MCP73113/4 charger. Refer to Section 5.5
“Constant Current MODE – Fast Charge” for
details.
3.7 Exposed Pad (EP)
The Exposed Thermal Pad (EP) should be connected
to the exposed copper area on the Printed Circuit
Board (PCB) to enhance thermal power dissipation.
Additional vias on the copper area under the
MCP73113/4 device will improve the performance of
heat dissipation and simplify the assembly process.
MCP73113/4
Symbol I/O Function
DFN-10
1, 2 V
DD
I Battery Management Input Supply
3, 4 V
BAT
I/O Battery Charge Control Output
5, 6 NC — No Connection
7 STAT O Battery Charge Status Output
8, 9 V
SS
— Battery Management 0V Reference
10 PROG I/O Battery Charge Current Regulation Program and Charge Control Enable
11 EP — Exposed Pad