MCP73811 MICROCHIP [Microchip Technology], MCP73811 Datasheet - Page 9

• Manufacturer Part Number: MCP73811
• Description: Simple, Miniature Single-Cell, Fully Integrated Li-Ion / Li-Polymer Charge Management Controllers
• Manufacturer: MICROCHIP [Microchip Technology]

3.0
The descriptions of the pins are listed in
TABLE 3-1:
3.1
A logic High enables battery charging. A logic Low
disables battery charging. The charge enable input is
compatible with 1.8V logic.
3.2
Connect to negative terminal of battery and input
supply.
3.3
Connect to positive terminal of battery. Drain terminal
of internal P-channel MOSFET pass transistor. Bypass
to V
when the battery is disconnected.
© 2007 Microchip Technology Inc.
Pin Number
SS
SOT-23-5
with a minimum of 1 µF to ensure loop stability
1
2
3
4
5
PIN DESCRIPTION
Charge Enable Input (CE)
Battery Management 0V Reference
(V
Battery Charge Control Output
(V
SS
BAT
)
)
PIN FUNCTION TABLES
Symbol
PROG
V
V
V
CE
BAT
DD
SS
Active High Charge Enable
Battery Management 0V Reference
Battery Charge Control Output
Battery Management Input Supply
Current Regulation Set and Charge Control Enable
Table
3-1.
3.4
A supply voltage of [V
recommended. Bypass to V
3.5
For the MCP73811, the current regulation set input
(PROG) functions as a digital input selection. A logic
Low selects a 85 mA charge current; a logic High
selects a 450 mA charge current.
For the MCP73812, the charge current is set by placing
a resistor from PROG to V
Function
Battery Management Input Supply
(V
Current Regulation Set (PROG)
DD
)
REG
MCP73811/2
(typ.) + 0.3V] to 6V is
SS
SS
.
with a minimum of 1 µF.
DS22036A-page 9