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LP7804 Scheda tecnica(PDF) 7 Page - Lowpower Semiconductor inc

Il numero della parte LP7804
Spiegazioni elettronici  ??릦訝???뷴뀉?듕퍜訝볡뵪??뎴
PDF  8 Pages
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Produttore elettronici  POWER [Lowpower Semiconductor inc]
Homepage  http://www.lowpowersemi.com
Logo POWER - Lowpower Semiconductor inc

LP7804 Scheda tecnica(HTML) 7 Page - Lowpower Semiconductor inc

  LP7804 Datasheet HTML 1Page - Lowpower Semiconductor inc LP7804 Datasheet HTML 2Page - Lowpower Semiconductor inc LP7804 Datasheet HTML 3Page - Lowpower Semiconductor inc LP7804 Datasheet HTML 4Page - Lowpower Semiconductor inc LP7804 Datasheet HTML 5Page - Lowpower Semiconductor inc LP7804 Datasheet HTML 6Page - Lowpower Semiconductor inc LP7804 Datasheet HTML 7Page - Lowpower Semiconductor inc LP7804 Datasheet HTML 8Page - Lowpower Semiconductor inc  
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LP7804-00
Oct.-2019
Email: marketing@lowpowersemi.com
www.lowpowersemi.com
Page 7 of 8
LP7804
温度保护
LP7804的NTC管脚用于充电部分的电池高低温保护
设定。通过接热敏电阻至VIN与GND分压，使该管脚
电压VNTC与温度对应。当VNTC处于高温保护电压阈值
与低温保护电压阈值之间时，充电工作。处于阈值之
外说明温度过高或过低，芯片会关断充电部分以保护
芯片及电池。NTC管脚悬空时默认充电工作。
通过调整VIN与GND分压RNTC-UP、RNTC_DN电阻值，调
节电池高低温保护范围，计算公式如下：
(
)
(
)
(
)
(
)
(
)
其中K1（VNTC-H）=6%，K2（VNTC-L）=43%，RTL为
NTC低温保护温度对应电阻，RTH为NTC高温保护温度
对应电阻。



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