MCP73862-I/SL Microchip Technology Inc., MCP73862-I/SL Datasheet - Page 12

• Manufacturer Part Number: MCP73862-I/SL
• Description: Highly-Integrated Dual Cell Lithium-Ion/Lithium-Polymer Charge Management Contro
• Manufacturer: Microchip Technology Inc.

Specifications of MCP73862-I/SL

• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

MCP73861/2/3/4
3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
3.1
MCP73861/3: Connect V
voltage, connect to V
MCP73862/4: Connect V
voltage, connect to V
3.2
A supply voltage of [V
recommended. Bypass to V
4.7 µF.
3.3
Connect to negative terminal of battery and input
supply.
3.4
Preconditioning, fast and termination currents are
scaled by placing a resistor from PROG to V
3.5
THREF is a voltage reference to bias external
thermistor for continuous cell temperature monitoring
and prequalification.
3.6
THERM is an input for an external thermistor for contin-
uous cell-temperature monitoring and prequalification.
Connect to THREF/3 to disable temperature sensing.
DS21893C-page 12
QFN
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Pin No.
PIN DESCRIPTION
Voltage Regulation Selection
(V
Battery Management Input Supply
(V
Battery Management 0V Reference
(V
Current Regulation Set (PROG)
Cell Temperature Sensor Bias
(THREF)
Cell Temperature Sensor Input
(THERM)
SET
DD2
SS1
SOIC
10
12
13
14
15
16
11
, V
3
4
5
6
7
8
9
1
2
)
, V
PIN FUNCTION TABLES
SS2
DD1
DD
DD
REG
, V
)
for 4.2V regulation voltage.
for 8.4V regulation voltage.
SET
SET
(typ.) + 0.3V] to 12V is
SS3
Symbol
THERM
THREF
TIMER
SS
PROG
STAT2
STAT1
V
V
V
V
V
V
V
V
V
to V
to V
EN
BAT1
BAT2
BAT3
DD1
DD2
SET
SS1
SS3
SS2
with a minimum of
)
SS
SS
for 4.1V regulation
for 8.2V regulation
Voltage Regulation Selection
Battery Management Input Supply
Battery Management Input Supply
Battery Management 0V Reference
Current Regulation Set
Cell Temperature Sensor Bias
Cell Temperature Sensor Input
Timer Set
Battery Management 0V Reference
Battery Charge Control Output
Battery Charge Control Output
Battery Voltage Sense
Battery Management 0V Reference
Logic Enable
Fault Status Output
Charge Status Output
SS
.
3.7
All safety timers are scaled by C
3.8
Connect to positive terminal of battery. Drain terminal
of internal P-channel MOSFET pass transistor. Bypass
to V
when the battery is disconnected.
3.9
V
terminal of battery. A precision internal resistor divider
regulates the final voltage on this pin to V
3.10
EN is an input to force charge termination, initiate
charge, clear faults or disable automatic recharge.
3.11
STAT2 is a current-limited, open-drain drive for direct
connection to a LED for charge status indication.
Alternatively, a pull-up resistor can be applied for
interfacing to a host microcontroller.
3.12
STAT1 is a current-limited, open-drain drive for direct
connection to a LED for charge status indication.
Alternatively, a pull-up resistor can be applied for
interfacing to a host microcontroller.
BAT3
SS
with a minimum of 4.7 µF to ensure loop stability
is a voltage sense input. Connect to positive
Timer Set
Battery Charge Control Output
(V
Battery Voltage Sense (V
Logic Enable (EN)
Fault Status Output (STAT2)
Charge Status Output (STAT1)
Function
BAT1
, V
BAT2
© 2005 Microchip Technology Inc.
)
TIMER
/0.1 µF.
REG
BAT3
.
)