參數(shù)資料
型號(hào)： 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(yè)數(shù)： 14/24頁(yè)
文件大?。?/td> 414K
代理商： MCP73844
MCP73841/2/3/4
DS21823B-page 14
2004 Microchip Technology Inc.
5.1.6
BATTERY VOLTAGE SENSE (V
BAT
)
The MCP7384X monitors the battery voltage at the
V
BAT
pin. This input is tied directly to the positive
terminal of the battery. The MCP7384X is offered in
four fixed-voltage versions for single or dual series cell
battery packs, with either coke or graphite anodes:
- 4.1V (MCP73841-4.1, MCP73843-4.1)
- 4.2V (MCP73841-4.2, MCP73843-4.2)
- 8.2V (MCP73842-8.2, MCP73844-8.2)
- 8.4V (MCP73842-8.4, MCP73844-8.4)
5.1.7
DRIVE OUTPUT (DRV)
The MCP7384X controls the gate drive to an external
P-channel MOSFET. The P-channel MOSFET is
controlled in the linear region regulating current and
voltage supplied to the cell. The drive output is
automatically turned off when the voltage on the V
DD
input falls below the undervoltage lockout voltage
(V
STOP
).
5.2
Digital Circuitry
5.2.1
CHARGE STATUS OUTPUT (STAT1)
A status output provides information on the state-of-
charge. The current-limited, open-drain output can be
used to illuminate an external LED. Optionally, a pull-up
resistor can be used on the output for communication
with a host microcontroller. Table 5-1 summarizes the
state of the status output during a charge cycle.
TABLE 5-1:
STATUS OUTPUTS
The flashing rate (1 Hz) is based off a timer capacitor
(C
TIMER
) of 0.1 μF. The rate will vary based on the
value of the timer capacitor.
5.2.2
LOGIC ENABLE (EN)
The logic-enable input pin (EN) can be used to
terminate a charge anytime during the charge cycle,
initiate a charge cycle or initiate a recharge cycle.
Applying a logic-high input signal to the EN pin, or tying
it to the input source, enables the device. Applying a
logic-low input signal disables the device and
terminates a charge cycle. When disabled, the device’s
supply current is reduced to 0.25 μA, typically.
Charge Cycle State
Stat1
Qualification
Preconditioning
Constant-Current Fast
Charge
Constant-Voltage
Charge Complete
Safety Timer Fault
OFF
ON
ON
ON
OFF
Flashing
(1 Hz, 50% duty cycle)
Flashing
(1 Hz, 50% duty cycle)
OFF
OFF
Cell Temperature Invalid
Disabled - Sleep mode
Battery Disconnected
相關(guān)PDF資料
PDF描述
MCP73843 Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
MCP73861 Advanced Single Cell, Fully Integrated Li-Ion /Li-Polymer Charge Management Controllers(增強(qiáng)型單節(jié)高度集成的鋰離子/鋰聚合物充電管理控制器)
MCP73862 Advanced Dual Cell, Fully Integrated Li-Ion /Li-Polymer Charge Management Controllers(增強(qiáng)型兩節(jié)高度集成的鋰離子/鋰聚合物充電管理控制器)
MCP810 Microcontroller Supervisory Circuit with Push-Pull Output(帶推挽輸出的微控制器監(jiān)控電路)
MCP809 Microcontroller Supervisory Circuit with Push-Pull Output(帶推挽輸出的微控制器監(jiān)控電路)
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(chēng):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(chēng):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(chēng):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(chēng):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(lèi)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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*