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Logic Controlled,
High-Side Power Switches
Data Sheet
FEATURES
ADP190 / ADP191
TYPICAL APPLICATIONS CIRCUIT
Low RDS ON of 105 m? at 1.8 V
Internal output discharge resistor (ADP191)
Turn-on slew rate limiting (ADP191)
+
–
VIN
GND
ADP190
VOUT
Low input voltage range: 1.1 V to 3.6 V
500 mA continuous operating current
Built-in level shift for control logic that can be operated
EN OFF
ON
LEVEL SHIFT
AND SLEW
RATE CONTROL
LOAD
by 1.2 V logic
Low 2 μA (maximum) ground current
Ultralow shutdown current: <1 μA
Figure 1.
Ultrasmall 0.8 mm × 0.8 mm, 4-ball, 0.4 mm pitch WLCSP
APPLICATIONS
+
–
VIN
GND
ADP191
VOUT
Mobile phones
Digital cameras and audio devices
Portable and battery-powered equipment
EN OFF
ON
LEVEL SHIFT
AND SLEW
RATE CONTROL
AND LOAD
DISCHARGE
LOAD
Figure 2.
GENERAL DESCRIPTION
The ADP190 / ADP191 are high-side load switches designed for
operation from 1.1 V to 3.6 V. These load switchs provide power
domain isolation for extended power battery life. The devices
contain a low on-resistance P-channel MOSFET that supports
more than 500 mA of continuous current and minimizes power
loss. The low 2 μA (maximum) of ground current and ultralow
shutdown current make the ADP190 / ADP191 ideal for battery-
operated portable equipment. The built-in level shifter for enable
logic makes the ADP190 / ADP191 compatible with modern
processors and GPIO controllers.
The ADP191 controls the turn-on slew rate of the switch to
reduce the input inrush current. The ADP191 also incorporates
an internal output discharge resistor to discharge the output
capacitance when the ADP191 output is disabled.
Beyond operating performance, the ADP190 / ADP191 occupy
minimal printed circuit board (PCB) space with an area less than
0.64 mm 2 and a height of 0.60 mm. It is available in an ultrasmall
0.8 mm × 0.8 mm, 4-ball, 0.4 mm pitch WLCSP.
Rev. E
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