參數(shù)資料
型號(hào): MCP73827
廠商: Microchip Technology Inc.
英文描述: Single Cell Lithium-Ion Charge Management Controller with Mode Indicator and Charge Current Monitor(單室鋰粒子充電器)
中文描述: 單節(jié)鋰離子電池充電管理控制器模式指示燈和充電電流監(jiān)視器(單室鋰粒子充電器)
文件頁(yè)數(shù): 8/24頁(yè)
文件大小: 555K
代理商: MCP73827
MCP73827
DS21704A-page 8
2002 Microchip Technology Inc.
3.0
PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
Pin Function Table.
3.1
Logic Shutdown (SHDN)
Input to force charge termination, initiate charge, or ini-
tiate recharge.
3.2
Battery Management 0V Reference
(GND)
Connect to negative terminal of battery.
3.3
Charge Status Output (MODE)
Open-drain drive for connection to an LED for charge
status indication. Alternatively, a pull-up resistor can be
applied for interfacing to a microcontroller. A low
impedance state indicates foldback current limit or con-
trolled current phase. A high impedance indicates con-
stant voltage phase or battery cell disconnected.
3.4
Charge Current Monitor (I
MON
)
Amplified output of the voltage difference between V
IN
and V
SNS
. A host microcontroller can monitor this out-
put with an A/D converter.
3.5
Cell Voltage Monitor Input (V
BAT
)
Voltage sense input. Connect to positive terminal of
battery. Bypass to GND with a minimum of 10 μF to
ensure loop stability when the battery is disconnected.
A precision internal resistor divider regulates the final
voltage on this pin to VREG.
3.6
Drive Output (V
DRV
)
Direct output drive of an external P-channel MOSFET
pass transistor for current and voltage regulation.
3.7
Charge Current Sense Input (V
SNS
)
Charge current is sensed via the voltage developed
across an external precision sense resistor. The sense
resistor must be placed between the supply voltage
(V
IN
) and the source of the external pass transistor. A
50 m
sense resistor produces a fast charge current of
1 A, typically.
3.8
Battery Management Input Supply
(V
IN
)
A supply voltage of 4.5V to 5.5V is recommended.
Bypass to GND with a minimum of 10 μF.
Pin
Name
Description
1
SHDN
Logic Shutdown
2
GND
Battery Management
0V Reference
3
MODE
Charge Status Output
4
I
MON
V
BAT
V
DRV
V
SNS
V
IN
Charge Current Monitor
5
Cell Voltage Monitor Input
6
Drive Output
7
Charge Current Sense Input
8
Battery Management
Input Supply
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MCP73828 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Single Cell Lithium-Ion Charge Management Controller with Charge Complete Indicator and Temperature Monitor