參數(shù)資料
型號: MB3887
廠商: Fujitsu Limited
英文描述: DC/DC Converter IC for Charging Li-ion battery
中文描述: 直流/直流轉(zhuǎn)換器集成電路充電鋰離子電池
文件頁數(shù): 20/33頁
文件大?。?/td> 383K
代理商: MB3887
MB3887
20
AC ADAPTOR VOLTAGE DETECTION
With an external resistor connected to the
+
INE2 terminal (pin 3) , the IC enters the dynamically-controlled
charging mode to reduce the charge current to keep AC adapter power constant when the partial potential point
A of the AC adapter voltage (VCC) becomes lower than the voltage at the
INE2 terminal.
AC adapter detection voltage setting : Vth
Vth (V)
=
(R1
+
R2)
/
R2
×
INE2
OPERATION TIMING DIAGRAM
+
VCC
R1
R2
+
INE2
INE2
A
<Error Amp2>
4
3
2.5 V
1.5 V
Error Amp2 FB2
Error Amp1 FB1
Error Amp2 FB3
OUT
Constant voltage control
Constant current control
AC adapter dynamically-
controlled charging
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