MCP73853IMF MICROCHIP [Microchip Technology], MCP73853IMF Datasheet - Page 10

• Manufacturer Part Number: MCP73853IMF
• Description: USB Compatible Li-Ion/Li-Polymer Charge Management Controllers
• Manufacturer: MICROCHIP [Microchip Technology]

MCP73853/55
3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
3.1
Connect to V
V
3.2
A supply voltage of [V
recommended. Bypass to V
4.7 µF.
3.3
Connect to negative terminal of battery.
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 pre-qualification.
3.6
Input for an external thermistor for continuous cell-
temperature monitoring and prequalification. Connect
to THREF/3 to disable temperature sensing.
DS21915A-page 10
DD
MCP73853
for 4.2V regulation voltage.
10
12
13
14
15
16
11
1
2
3
4
5
6
7
8
9
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
DD1
SS1
SS
for 4.1V regulation voltage. Connect to
, V
)
, V
PIN FUNCTION TABLE
SS2
DD2
MCP73855
, V
)
REG
10
—
—
—
—
—
—
2
3
4
5
6
8
9
7
1
SS3
(Typ) + 0.3V] to 5.5V is
SS
)
with a minimum of
THERM
THREF
TIMER
STAT2
STAT1
PROG
V
V
V
V
V
V
V
V
V
Sym
EN
BAT1
BAT2
BAT3
DD1
DD2
SET
SS1
SS3
SS2
SS
.
Description
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
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
Voltage sense input. Connect to positive terminal of
battery. A precision internal resistor divider regulates
the final voltage on this pin to V
3.10
Input to force charge termination, initiate charge, clear
faults or disable automatic recharge.
3.11
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
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.
SS
with a minimum of 4.7 µF to ensure loop stability
Timer Set (TIMER)
Battery Charge Control Output
(V
Battery Voltage Sense (V
Logic Enable (EN)
Fault Status Output (STAT2)
Charge Status Output (STAT1)
BAT1
, V
BAT2
 2004 Microchip Technology Inc.
)
REG
TIMER
.
/0.1 µF.
BAT3
)