参数资料
型号: ADP191ACBZ-R7
厂商: Analog Devices Inc
文件页数: 11/16页
文件大小: 0K
描述: IC CTLR HIGH LSIDE PWR SW 4WLCSP
产品变化通告: 8mm Carrier Tape Changes 28/Feb/2012
标准包装: 1
类型: 高端开关
导通状态电阻: 105 毫欧
电源电压: 1.1 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 4-WFBGA,WLCSP
供应商设备封装: 4-WLCSP(0.76x0.76)
包装: 标准包装
配用: ADP191CB-EVALZ-ND - EVAL BOARD FOR ADP191
其它名称: ADP191ACBZ-R7DKR
Data Sheet
ADP190/ADP191
T
V EN
I LOAD = 100mA
C LOAD = 1μF
V EN = 3.6V
T
V EN
2 1
V OUT = 2.5V
V OUT = 1.8V
V OUT = 1.2V
1
2
3
V OUT
I IN
V OUT = 1.8V
I LOAD = 200mA
C LOAD = 1μF
V EN = 3.6V
CH1 1V
CH2 1V
M4μs
A CH1
2.34V
CH1 2V
CH2 2V
M10μs
A CH1
2.32V
T
15.96μs
CH3 2.00mA ?
T
40.16μs
Figure 23. ADP190 Typical Turn-On Delay Time with Varying Input Voltage
Figure 25. ADP190 Typical Rise Time and Inrush Current with C LOAD = 1 μF
4.0
3.5
V OUT = 3.6V
1
T
V EN
3.0
I IN
2.5
2.0
V OUT = 1.8V
1.5
V EN = 1.8V
2
V OUT
1.0
0.5
V OUT = 1.2V
3
0
0
100
200 300
TIME (μs)
400
500
CH1 2.00V
CH3 2.00V
CH2 100mA
M20.0μs
T 10.20%
A CH1
1.24V
Figure 24. ADP191 Typical Turn-On Delay Time with Varying Input Voltage
Figure 26. ADP191 Typical Rise Time and Inrush Current with C LOAD = 1 μF
The rise time is defined as the delta between the time from 10%
to 90% of VOUT reaching its final value. It is dependent on the
RC time constant where C = load capacitance (C LOAD ) and R =
RDS ON ||R LOAD . Because RDS ON is usually smaller than R LOAD , an
adequate approximation for RC is RDS ON × C LOAD . The ADP190 /
ADP191 do not need any input or load capacitor, but capacitors
can be used to suppress noise on the board. If significant load
capacitance is connected, inrush current is a concern.
The ADP191 contains circuitry to limit the slew rate of the
switch turn to reduce the turn on inrush current. See Figure 25
and Figure 26 for a comparison of rise time and inrush current.
1
2
3
T
V EN
V OUT
I IN
V OUT = 1.8V
I LOAD = 200mA
C LOAD = 4.7μF
V EN = 3.6V
CH1 2V
CH2 2V
M10μs
A CH1
1.00V
CH3 2.00mA ?
T
39.8μs
Figure 27. ADP190 Typical Rise Time and Inrush Current with C LOAD = 4.7 μF
Rev. E | Page 11 of 16
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