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參數(shù)資料
| 型號： | NCP802SAN6T1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | Highly Integrated Lithium Battery Protection Circuit for One Cell Battery Packs |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | PLASTIC, SON-6 |
| 文件頁數(shù)： | 17/23頁 |
| 文件大小： | 125K |
| 代理商： | NCP802SAN6T1 |
NCP802
http://onsemi.com
17
DO
V
VCELL
P
GND
V
DO
A
I
J
M
K
L
Figure 43. Test Circuits
V
V
V
CO
A
A
A
VCELL
P
GND
DO
VCELL
P
GND
DO
VCELL
P
GND
VCELL
P
GND
Overvoltage Detection
The overvoltage detector (VD1) monitors the VCELL pin
voltage. When the VCELL voltage crosses the overvoltage
detector threshold (VDET1) from a low value to a value
higher than VDET1, VD1 detects an overcharging
condition. The NCP802 then turns off an external, charge
control, Nchannel, MOSFET by driving the CO pin to its
low level. A level shifter, incorporated in a buffer driver for
the CO pin, drives the low level of the CO pin to the P pin
voltage, which is connected to the source of the charge
control MOSFET by a resistor. The high level of the CO pin
is driven to the VCELL voltage with a CMOS buffer.
To reset the CO pin to its high level, the voltage at the
VCELL pin must decrease to a level lower than VDET1. The
overvoltage detector does not reset after the battery voltage
falls below some hysteresis voltage. The NCP802 will not
reset from an overvoltage fault as long as a charger is
connected to the battery. Rather, the excessdischarge
current detector (VD3) signals the IC to reset from an
overvoltage condition by detecting a load while in an
overvoltage condition. When the P pin voltage becomes
equal to or greater than than the excess dischargecurrent
detector threshold (VDET3) during an overvoltage fault, the
NCP802 senses the voltage drop across the charge
MOSFET’s body diode induced by the load current. It then
resets from the overvoltage state.
There are internal, fixed delay times for both the detection
and release from an overvoltage condition. If the fault or
reset conditions are shorter than their respective delay times,
the NCP802 ignores that condition and stays in its previous
state.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP802SAN6T1G | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Highly Integrated Lithium Battery Protection Circuit for One Cell Battery Packs |
| NCP802SN1T1 | 功能描述:IC L-I BATTERY PROTECTOR SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| NCP803 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Very Low Supply Current 3-Pin Microprocessor Reset Monitor |
| NCP803/D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Very Low Supply Current 3-Pin Microprocessor Reset Monitor |
| NCP803SN120T1G | 功能描述:監(jiān)控電路 ANA 1.20V MCROPROC RESET RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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