Logic Controlled,
High-Side Power Switch
Data Sheet
ADP194
Rev. A
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FEATURES
Low RDS
ON
of 80 mΩ at 1.8 V
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
by 1.2 V logic
Low 2 μA (maximum) ground current
Ultralow shutdown current <0.7 μA
Reverse current blocking
Ultrasmall 0.8 mm × 0.8 mm × 0.5mm, 4-ball, 0.4 mm
pitch WLCSP
APPLICATIONS
Mobile phones
Digital cameras and audio devices
Portable and battery-powered equipment
TYPICAL APPLICATIONS CIRCUIT
GND
EN
+
–
LOAD
VIN
VOUT
ADP194
LEVEL SHIFT
AND SLEW
RATE CONTROL
OFF
ON
08629-001
REVERSE
POLARITY
PROTECTION
Figure 1.
GENERAL DESCRIPTION
The ADP194 is a high-side load switch designed for operation
from 1.1 V to 3.6 V and is protected against reverse current flow
from output to input. This load switch provides power domain
isolation for extended power battery life. The device contains a
low on-resistance P-channel MOSFET that supports more than
500 mA of continuous load current and minimizes power loss.
The low 2 µA (maximum) ground current and ultralow shut-
down current make the ADP194 ideal for battery-operated
portable equipment. The built-in level shifter in the enable logic
input makes the ADP194 compatible with modern processors
and GPIO controllers.
Beyond operating performance, the ADP194 occupies minimal
printed circuit board (PCB) space with an area of less than
0.64 mm
2
and a height of 0.50 mm. The ADP194 is available in
an ultrasmall 0.8 mm × 0.8 mm, 4-ball, 0.4 mm pitch WLCSP.
