ADP198ACPZ-R7 Analog Devices, Inc., ADP198ACPZ-R7 Datasheet - Page 11

• Manufacturer Part Number: ADP198ACPZ-R7
• Description: Logic Controlled, 1 A, High-side Load Switch With Reverse Current Blocking
• Manufacturer: Analog Devices, Inc.

Data Sheet
THEORY OF OPERATION
The
for supply operation between 1.65 V and 6.5 V. The PMOS load
switch has a low on resistance of 50 mΩ at V
supports 1 A of continuous load current. The
low quiescent current at 2.5 μA typical using a 2.8 V supply.
ADP198
SEL0
SEL1
GND
VIN
EN
is a high-side PMOS load switch that is designed
ADP198
Figure 22. Functional Block Diagram
RATE CONTROL
LEVEL SHIFT
PROTECTION
POLARITY
REVERSE
SLEW
IN
ADP198
= 3.3 V and
VOUT
features
Rev. B | Page 11 of 16
The enable input incorporates a nominal 4 MΩ pull-down
resistor. SEL0 and SEL1 program the start-up time of the load
switch to reduce inrush current when the switch is turned on.
The reverse current protection circuitry prevents current from
flowing backwards through the
is greater than the input voltage. A comparator senses the differ-
ence between the input and output voltages. When the difference
between the input voltage and output voltage exceeds 75 mV,
the body of the PFET is switched to VOUT and turned off or
opened. In other words, the gate is connected to VOUT.
The packaging is a space-saving 1 mm × 1 mm, 4-ball WLCSP.
The
0.5 mm pitch LFCSP.
ADP198
is also available in a 2 mm × 2 mm × 0.55 mm,
ADP198
when the output voltage
ADP198