ADP190 查看數據表（PDF） - Analog Devices
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ADP190 Datasheet PDF : 16 Pages
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Data Sheet
THEORY OF OPERATION
The ADP190/ADP191 are high-side PMOS load switches. They
are designed for supply operation from 1.1 V to 3.6 V. The PMOS
load switch is designed for low on resistance, 105 mΩ at VIN =
1.8 V, and supports 500 mA of continuous current. It is a low
ground current device with a nominal 4 MΩ pull-down resistor
on its enable pin. The package is a space-saving 0.8 mm ×
0.8 mm, 4-ball WLCSP.
The ADP191 incorporates an internal output discharge resistor
to discharge the output capacitance when the ADP191 output is
disabled. The ADP191 also contains circuitry to limit the switch
turn-on slew rate to limit the inrush current.
ADP190/ADP191
ADP190
VIN
GND
VOUT
LEVEL SHIFT
EN
AND SLEW
RATE CONTROL
Figure 17. ADP190 Functional Block Diagram
VIN
GND
EN
ADP191
LEVEL SHIFT
AND SLEW
RATE CONTROL
AND LOAD
DISCHARGE
VOUT
Figure 18. ADP191 Functional Block Diagram
Rev. E | Page 9 of 16
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