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| 型号： | MCP73855-I/MF |
| 厂商： | Microchip Technology |
| 文件页数： | 10/28页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER LI-ION 4.5V 10DFN |
| 标准包装： | 120 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN-EP（3x3） |
| 包装： | 管件 |
| 产品目录页面： | 669 (CN2011-ZH PDF) |
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MCP73853/55
3.0
PIN DESCRIPTION
TABLE 3-1:
PIN FUNCTION TABLE
MCP73853
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
MCP73855
2
3
—
4
5
—
—
6
—
8
9
—
7
10
—
1
Sym
V SET
V DD1
V DD2
V SS1
PROG
THREF
THERM
TIMER
V SS3
V BAT1
V BAT2
V BAT3
V SS2
EN
STAT2
STAT1
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
3.1
Voltage Regulation Selection
3.7
Timer Set (TIMER)
(V SET )
Connect to V SS for 4.1V regulation voltage. Connect to
V DD for 4.2V regulation voltage.
3.2 Battery Management Input Supply
(V DD1 , V DD2 )
A supply voltage of [V REG (Typ) + 0.3V] to 5.5V is
recommended. Bypass to V SS with a minimum of
All safety timers are scaled by C TIMER /0.1 μF.
3.8 Battery Charge Control Output
(V BAT1 , V BAT2 )
Connect to positive terminal of battery. Drain terminal
of internal P-channel MOSFET pass transistor. Bypass
to V SS with a minimum of 4.7 μF to ensure loop stability
when the battery is disconnected.
4.7 μF.
3.9
Battery Voltage Sense (V BAT3 )
3.3
Battery Management 0V Reference
Voltage sense input. Connect to positive terminal of
(V SS1 , V SS2 , V SS3 )
Connect to negative terminal of battery.
battery. A precision internal resistor divider regulates
the final voltage on this pin to V REG .
3.4
Current Regulation Set (PROG)
3.10
Logic Enable (EN)
Preconditioning, fast and termination currents are
scaled by placing a resistor from PROG to V SS .
Input to force charge termination, initiate charge, clear
faults or disable automatic recharge.
3.5
Cell Temperature Sensor Bias
3.11
Fault Status Output (STAT2)
(THREF)
THREF is a voltage reference to bias external
thermistor for continuous cell temperature monitoring
and pre-qualification.
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.
3.6
Cell Temperature Sensor Input
3.12
Charge Status Output (STAT1)
(THERM)
Input for an external thermistor for continuous cell-
temperature monitoring and prequalification. Connect
to THREF/3 to disable temperature sensing.
DS21915B-page 10
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.
? 2004-2012 Microchip Technology Inc.
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