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Analog Devices |
FEATURES
Input voltage range: 2.3 V to 5.5 V
Output voltage range: 1.2 V to 3.3 V
Output current: 100 mA
Low quiescent current
IGND = 11 μA with zero load
IGND = 22 μA with 100 mA load
Low shutdown current: <1 μA
Low dropout voltage
60 mV @ 100 mA load
High PSRR
73 dB @ 1 kHz at VOUT = 1.2 V
70 dB @ 10 kHz at VOUT = 1.2 V
Low noise: 40 μV rms at VOUT = 1.2 V
No noise bypass capacitor required
Initial accuracy: ±1%
Stable with small 1 μF ceramic output capacitor
16 fixed output voltage options
Current-limit and thermal overload protection
Logic controlled enable
5-lead TSOT package
4-ball 0.4 mm pitch WLCSP
APPLICATIONS
Mobile phones
Digital camera and audio devices
Portable and battery-powered equipment
Post regulation
GENERAL DESCRIPTION
The ADP120 is a low quiescent current, low dropout, linear
regulator that operates from 2.3 V to 5.5 V and provides up to
100 mA of output current. The low 60 mV dropout voltage at
100 mA load improves efficiency and allows operation over a
wide input voltage range. The low 25 μA of quiescent current at
full load makes the ADP120 ideal for battery-operated portable
equipment.
100 mA, Low Quiescent Current,www.DataSheet4U.com
CMOS Linear Regulator
ADP120
TYPICAL APPLICATIONS CIRCUITS
VIN = 2.3V
+
1µF
1 VIN
2 GND
VOUT 5
VOUT = 1.8V
+
1µF
3 EN
NC 4
NC = NO CONNECT
Figure 1. ADP120 TSOT with Fixed Output Voltage, 1.8 V
VIN = 2.3V
+
1µF
VIN
VOUT
VOUT = 1.8V
+
1µF
EN GND
Figure 2. ADP120 WLCSP with Fixed Output Voltage, 1.8 V
The ADP120 is available in 16 fixed output voltage options,
ranging from 1.2 V to 3.3 V. The part is optimized for stable
operation with small 1 μF ceramic output capacitors. The
ADP120 delivers good transient performance with minimal
board area.
Short-circuit protection and thermal overload protection circuits
prevent damage in adverse conditions. The ADP120 is available
in a tiny 5-lead TSOT and a 4-ball 0.4 mm pitch WLCSP for the
smallest footprint solution for use in a variety of portable
applications.
Rev. A
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.
ADP120
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Typical Application Circuits............................................................ 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Recommended Specifications: Input and Output Capacitors 4
Absolute Maximum Ratings............................................................ 5
Thermal Data ................................................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
REVISION HISTORY
7/08—Rev. 0 to Rev. A
Deleted ADP120-1..............................................................Universal
Changes to General Description .................................................... 1
Changes to Dropout Voltage Parameter, Table 1.......................... 3
Changes to Thermal Data Section.................................................. 5
Changes to Figure 12 and Figure 14............................................... 8
Changes to Figure 22........................................................................ 9
Changes to Table 6 and Table 7..................................................... 14
Changes to Figure 46 and Figure 47 Captions............................ 17
Changes to Ordering Guide .......................................................... 18
6/08—Revision 0: Initial Version
www.DataSheet4U.com
Typical Performance Characteristics ..............................................7
Theory of Operation ...................................................................... 11
Applications Information .............................................................. 12
Capacitor Selection .................................................................... 12
Undervoltage Lockout ............................................................... 13
Enable Feature ............................................................................ 13
Current Limit and Thermal Overload Protection ................. 14
Thermal Considerations............................................................ 14
PCB Layout Considerations...................................................... 17
Outline Dimensions ....................................................................... 18
Ordering Guide .......................................................................... 19
Rev. A | Page 2 of 20
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