Ultralow Quiescent Current,
150 mA, CMOS Linear Regulator
ADP160/ADP161
FEATURES
TYPICAL APPLICATION CIRCUITS
ADP160
Ultralow quiescent current
V
= 2.3V
1µF
V
= 1.8V
IN
OUT
I
I
Q = 560 nA with 0 μA load
Q = 860 nA with 1 μA load
5
1
2
3
VIN
GND
EN
VOUT
1µF
Stable with 1 μF ceramic input and output capacitors
Maximum output current: 150 mA
Input voltage range: 2.2 V to 5.5 V
Low shutdown current: <50 nA typical
Low dropout voltage: 195 mV @ 150 mA load
Initial accuracy: 1ꢀ
Accuracy over line, load, and temperature: 3.5ꢀ
15 fixed output voltage options: 1.2 V to 4.2 V
Adjustable output available
ON
4
NC
OFF
NC = NO CONNECT
Figure 1. 5-Lead TSOT ADP160 with Fixed Output Voltage, 1.8 V
ADP161
V
= 4.2V
1µF
V
= 3.2V
1µF
IN
OUT
5
4
1
2
3
VIN
GND
EN
VOUT
R1
R2
ON
ADJ
PSRR performance of 72 dB @ 100 Hz
Current limit and thermal overload protection
Logic-control enable
OFF
Figure 2. 5-Lead TSOT ADP161 with Adjustable Output Voltage, 3.2 V
Integrated output discharge resistor
5-lead TSOT package
ADP160
1
2
V
= 2.8V
4-ball, 0.5 mm pitch WLCSP
V
= 3.3V
1µF
OUT
IN
VIN
VOUT
A
B
1µF
TOP VIEW
(Not to Scale)
APPLICATIONS
ON
EN
GND
OFF
Mobile phones
Digital cameras and audio devices
Portable and battery-powered equipment
Post dc-to-dc regulation
Figure 3. 4-Ball WLCSP ADP160 with Fixed Output Voltage, 2.8 V
Portable medical devices
GENERAL DESCRIPTION
The ADP160/ADP161 are ultralow quiescent current, low
dropout, linear regulators that operate from 2.2 V to 5.5 V and
provide up to 150 mA of output current. The low 195 mV dropout
voltage at 150 mA load improves efficiency and allows operation
over a wide input voltage range.
The ADP160 is available in 15 fixed output voltage options,
ranging from 1.2 V to 4.2 V. The ADP160/ADP161 also include
a switched resistor to discharge the output automatically when
the LDO is disabled.
The ADP161 is available as an adjustable output voltage regulator.
It is only available in a 5-lead TSOT package.
The ADP160/ADP161 are specifically designed for stable operation
with tiny 1 μF ꢀ0ꢁ ceramic input and output capacitors to
meet the requirements of high performance, space-constrained
applications.
Short-circuit and thermal overload protection circuits prevent
damage in adverse conditions. The ADP160 is available in a tiny
5-lead TSOT and a 4-ball, 0.5 mm pitch WLCSP package for the
smallest footprint solution to meet a variety of portable power
applications.
Rev. 0
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