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Logic Controlled, 1 A, High-Side Load
Switch with Reverse Current Blocking
Data Sheet
FEATURES
ADP198
TYPICAL APPLICATION CIRCUITS
Low RDS ON of 50 mΩ @ 3.3 V (WLCSP only)
Low input voltage range: 1.65 V to 6.5 V
1 A continuous operating current
Built-in level shift for control logic that can be operated by
1.2 V logic
+
VIN
GND
ADP198
REVERSE
POLARITY
PROTECTION
VOUT
Low 2.5 μA quiescent current @ V IN = 2.8 V
Low 1.1 μA shutdown current @ V IN = 2.8 V
Reverse current blocking
OFF
EN
ON
LEVEL SHIFT
AND SLEW
RATE CONTROL
LOAD
Programmable start-up time
Ultrasmall 1 mm × 1 mm, 4-ball, 0.5 mm pitch (WLCSP)
Tiny 8-lead lead frame chip scale package (LFCSP)
Figure 1. WLCSP
2.0 mm × 2.0 mm × 0.55 mm, 0.5 mm pitch
ADP198
REVERSE
POLARITY
APPLICATIONS
Mobile phones
Digital cameras and audio devices
Portable and battery-powered equipment
+
VIN
VIN
SEL0
SEL1
PROTECTION
SLEW
RATE CONTROL
VOUT
VOUT
LOAD
OFF
ON
EN
LEVEL SHIFT
GND
Figure 2. LFCSP
GENERAL DESCRIPTION
The ADP198 is a high-side load switch designed for operation
between 1.65 V and 6.5 V that is protected against reverse
current flow from output to input. A load switch provides power
domain isolation, thereby helping to keep subsystems isolated and
powered independently and enabling reduced power consumption.
The ADP198 contains a low on-resistance P-channel MOSFET
that supports more than 1 A of continuous load current. The
low 2.5 μA quiescent current and ultralow shutdown current
make the ADP198 ideal for battery-operated portable
equipment. The built-in level shifter for enable logic makes the
ADP198 compatible with modern processors and general-purpose
input/output (GPIO) controllers. The LFCSP version also allows
the user to program the start-up time to control the inrush
current at turn on.
The ADP198 is available in an ultrasmall 1 mm × 1 mm, 4-ball,
0.5 mm pitch WLCSP. An 8-lead, 2 mm × 2 mm × 0.55 mm,
0.5 mm pitch LFCSP is also available.
Rev. G
Document Feedback
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