Very Low Quiescent Current,
150 mA, LDO Regulator
Data Sheet
ADP165/ADP166
FEATURES TYPICAL APPLICATION CIRCUITS
ADP165/ADP166
Very low quiescent current
V = 2.3V V = 1.8V
IN OUT
I = 590 nA with 0 A load 1 VIN VOUT 5
Q
1F
1F
I = 890 nA with 1 A load
Q
2
GND
Maintains very low quiescent current in dropout (pass
ON
3 4
EN NC
through mode)
OFF
I _ = 720 nA with 0 A load
Q DROP
NOTES
I = 1200 nA with 1 A load
Q_DROP
1. NC = NO CONNECT. NOT CONNECTED INTERNALLY.
Stable with 1 F 30% ceramic input and output capacitors
Figure 1. 5-Lead TSOT ADP165/ADP166 with Fixed Output Voltage, 1.8 V
Maximum operating load current (I ): 150 mA
LOAD_MAX
ON
Input voltage range: 2.2 V to 5.5 V
EN 4 3 GND
OFF
Low shutdown current: 50 nA typical
Low dropout voltage: 120 mV at 150 mA load ADP165/
NC 5 2 NC
ADP166
V = 2.3V V = 1.8V
Initial output voltage accuracy: 1% IN OUT
VIN 6 1 VOUT
Accuracy over line, load, and temperature: 3.5% 1F 1F
7 fixed output voltage options: 1.2 V to 3.3 V
NOTES
Adjustable output option can be set from 1.0 V to 4.2 V 1. NC = NO CONNECT. NOT CONNECTED INTERNALLY.
PSRR: 72 dB at 100 Hz, V = 1.2 V
OUT
Figure 2. 6-Lead, 2 mm 2 mm LFCSP ADP165/ADP166 with Fixed Output
Voltage, 1.8 V
Current-limit and thermal overload protection
Logic control enable
ADP165/ADP166
Integrated output discharge resistor 1 2
Three package options V = 1.8V
V = 2.3V OUT
IN
VIN VOUT
A
5-lead TSOT package
1F 1F
TOP VIEW
6-lead, 2 mm 2 mm LFCSP
(Not to Scale)
4-ball, 0.5 mm pitch WLCSP ON
EN GND
OFF B
APPLICATIONS
Figure 3. 4-Ball WLCSP ADP165/ADP166 with Fixed Output Voltage, 1.8 V
Portable and battery-powered equipment
Post dc-to-dc regulation
Portable medical devices
Wireless sensor network (WSN) devices
GENERAL DESCRIPTION
The ADP165/ADP166 are very low quiescent current, low The ADP165/ADP166 are available in seven fixed output
dropout (LDO), linear regulators that operate from 2.2 V to 5.5 V voltage options, ranging from 1.2 V to 3.3 V, and an adjustable
and provide up to 150 mA of output current. The low 120 mV output option. The ADP165 also includes a switched resistor to
dropout voltage at a 150 mA load improves efficiency and allows discharge the output automatically when the LDO is disabled.
operation over a wide input voltage range. The ADP166 is identical to the ADP165, but it does not include
the output discharge function.
The ADP165/ADP166 are specifically designed for stable operation
with a tiny 1 F 30% ceramic input and output capacitors to Short-circuit and thermal overload protection circuits prevent
meet the requirements of high performance, space constrained damage in adverse conditions. The ADP165/ADP166 are
applications. available in a tiny 5-lead TSOT, a 6-lead LFCSP, and a 4-ball,
0.5 mm pitch WLCSP package for the smallest footprint
solution to meet a variety of portable power applications.
Rev. A Document Feedback
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12188-001
12188-003
12188-002ADP165/ADP166 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1 Theory of Operation ...................................................................... 13
Applications ....................................................................................... 1 Applications Information .............................................................. 15
Typical Application Circuits ............................................................ 1 Capacitor Selection .................................................................... 15
General Description ......................................................................... 1 Enable Feature ............................................................................ 16
Revision History ............................................................................... 2 Undervoltage Lockout (UVLO) ............................................... 16
Specifications ..................................................................................... 3 Current-Limit and Thermal Overload Protection ................. 16
Recommended Specifications: Input and Output Capacitors 4 Thermal Considerations ............................................................ 17
Absolute Maximum Ratings ............................................................ 5 PCB Layout Considerations ...................................................... 20
Thermal Data ................................................................................ 5 Light Sensitivity of WLCSPs ..................................................... 21
Thermal Resistance ...................................................................... 5 Outline Dimensions ....................................................................... 22
ESD Caution .................................................................................. 5 Ordering Guide .......................................................................... 23
Pin ConfigurationS and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 9
REVISION HISTORY
11/14Rev. 0 to Rev. A
Change to Features Section ............................................................. 1
Change to Theory of Operation Section ..................................... 13
9/14Revision 0: Initial Version
Rev. A | Page 2 of 23