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Logic Controlled,
High-Side Power Switch
Data Sheet
FEATURES
ADP194
TYPICAL APPLICATIONS CIRCUIT
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
VIN
ADP194
REVERSE
POLARITY
PROTECTION
VOUT
Built-in level shift for control logic that can be operated
by 1.2 V logic
+
–
GND
Low 2 μA (maximum) ground current
Ultralow shutdown current <0.7 μA
Reverse current blocking
OFF
EN
ON
LEVEL SHIFT
AND SLEW
RATE CONTROL
LOAD
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
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
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Figure 1.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ?2011 Analog Devices, Inc. All rights reserved.
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