參數(shù)資料
型號： MCP73844
廠商： Microchip Technology Inc.
英文描述： Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
中文描述： 先進(jìn)的單節(jié)或雙節(jié)鋰離子/鋰聚合物充電管理控制器
文件頁數(shù)： 10/24頁
文件大?。?/td> 414K
代理商： MCP73844
MCP73841/2/3/4
DS21823B-page 10
2004 Microchip Technology Inc.
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN DESCRIPTION TABLE
3.1
Charge Current Sense Input
(SENSE)
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
DD
) and the external pass transistor (Q1). A 220 m
sense resistor produces a fast charge current of
500 mA, typically.
3.2
Battery Management Input Supply
(V
DD
)
A supply voltage of [V
REG
(Typ) + 0.3V] to 12V is
recommended. Bypass to V
SS
with a minimum of
4.7 μF.
3.3
Charge Status Output (STAT1)
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.
3.4
Logic Enable (EN)
Input to force charge termination, initiate charge, clear
faults or disable automatic recharge.
3.5
Cell Temperature Sensor Bias
(THREF)
Voltage reference to bias external thermistor for
continuous
cell
temperature
prequalification.
monitoring
and
3.6
Cell Temperature Sensor Input
(THERM)
Input for an external thermistor for continuous cell-
temperature monitoring and pre-qualification. Apply a
voltage equal to 0.85V to disable temperature-sensing.
3.7
Timer Set (TIMER)
All safety timers are scaled by C
TIMER
/0.1 μF.
3.8
Battery Management 0V Reference
(V
SS
)
Connect to negative terminal of battery.
3.9
Battery Voltage Sense (V
BAT
)
Voltage sense input. Connect to positive terminal of
battery. Bypass to V
SS
with a minimum of 4.7 μF to
ensure loop stability when the battery is disconnected.
A precision internal resistor divider regulates the final
voltage on this pin to V
REG
.
3.10
Drive Output (DRV)
Direct output drive of an external P-channel MOSFET
for current and voltage regulation.
MCP73841,
MCP73842
Pin No.
MCP73843,
MCP73844
Pin No.
Name
Function
1
2
3
4
5
6
7
8
9
10
1
2
3
4
—
—
5
6
7
8
SENSE
V
DD
STAT1
EN
THREF
THERM
TIMER
V
SS
V
BAT
DRV
Charge Current Sense Input
Battery Management Input Supply
Charge Status Output
Logic Enable
Cell Temperature Sensor Bias
Cell Temperature Sensor Input
Timer Set
Battery Management 0V Reference
Battery Voltage Sense
Drive Output
相關(guān)PDF資料
PDF描述
MCP73843 Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
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MCP73862 Advanced Dual Cell, Fully Integrated Li-Ion /Li-Polymer Charge Management Controllers(增強型兩節(jié)高度集成的鋰離子/鋰聚合物充電管理控制器)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP73844-410I/MS 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
MCP73844-410I/UN 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
MCP73844-420I/MS 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
MCP73844-420I/UN 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
MCP73844-820I/MS 功能描述:電池管理 w/ Chrge Sfty Timer RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
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