MCP73831 Microchip Technology, Inc., MCP73831 Datasheet - Page 9

• Manufacturer Part Number: MCP73831
• Manufacturer: Microchip Technology, Inc.

3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
3.1
A supply voltage of [V
recommended. Bypass to V
4.7 F.
3.2
Connect to positive terminal of battery. Drain terminal
of internal P-channel MOSFET pass transistor. Bypass
to V
when the battery is disconnected.
3.3
STAT is a tri-state logic output for connection to an LED
for charge status indication. Alternatively, a pull-up
resistor can be applied for interfacing to a host
microcontroller.
© 2005 Microchip Technology Inc.
DFN
SS
1
2
3
4
5
6
7
8
with a minimum of 4.7 F to ensure loop stability
Pin No.
PIN DESCRIPTION
Battery Management Input Supply
(V
Battery Charge Control Output
(V
Charge Status Output (STAT)
DD
BAT
SOT23-5
)
—
—
—
4
3
1
2
5
)
PIN FUNCTION TABLES
REG
Symbol
PROG
STAT
V
V
V
V
V
NC
(typ.) + 0.3V] to 6V is
BAT
BAT
SS
DD
DD
SS
with a minimum of
Battery Management Input Supply
Battery Management Input Supply
Battery Charge Control Output
Battery Charge Control Output
Charge Status Output
Battery Management 0V Reference
No Connection
Current Regulation Set and Charge Control Enable
3.4
Connect to negative terminal of battery and input
supply.
3.5
Preconditioning, fast charge, and termination currents
are scaled by placing a resistor from PROG to V
The charge management controller can be disabled by
allowing the PROG input to float.
Battery Management 0V Reference
(V
Current Regulation Set (PROG)
Function
SS
)
MCP73831
DS21984A-page 9
SS
.