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
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 registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2010 Analog Devices, Inc. All rights reserved.
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