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ADP125 Dataheets PDF



Part Number ADP125
Manufacturers Analog Devices
Logo Analog Devices
Description CMOS Linear Regulator
Datasheet ADP125 DatasheetADP125 Datasheet (PDF)

Data Sheet 5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators ADP124/ADP125 08476-001 FEATURES Input voltage supply range: 2.3 V to 5.5 V 500 mA maximum output current Fixed and adjustable output voltage versions 1% initial accuracy Up to 31 fixed-output voltage options available from 1.75 V to 3.3 V Adjustable-output voltage range from 0.8 V to 5.0 V Very low dropout voltage: 130 mV Low quiescent current: 45 µA Low shutdown current: <1 µA Excellent PSRR performance: 60 dB at .

  ADP125   ADP125


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Data Sheet 5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators ADP124/ADP125 08476-001 FEATURES Input voltage supply range: 2.3 V to 5.5 V 500 mA maximum output current Fixed and adjustable output voltage versions 1% initial accuracy Up to 31 fixed-output voltage options available from 1.75 V to 3.3 V Adjustable-output voltage range from 0.8 V to 5.0 V Very low dropout voltage: 130 mV Low quiescent current: 45 µA Low shutdown current: <1 µA Excellent PSRR performance: 60 dB at 100 kHz Excellent load/line transient response Optimized for small 1.0 μF ceramic capacitors Current limit and thermal overload protection Logic controlled enable Compact 8-lead exposed paddle MSOP and LFCSP packages APPLICATIONS Digital camera and audio devices Portable and battery-powered equipment Automatic meter reading (AMR) meters GPS and location management units Medical instrumentation Point of load power TYPICAL APPLICATION CIRCUITS VOUT = 3.3V C2 1 VOUT VIN 8 ADP124 2 VOUT VIN 7 VIN = 5.5V C1 VOUT 3 SENSE 4 GND NC 6 ON EN 5 OFF Figure 1. ADP124 with Fixed Output Voltage VOUT = 3.3V C2 R1 R2 1 VOUT VIN 8 ADP125 2 VOUT VIN 7 VIN = 5.5V C1 3 ADJ 4 GND NC 6 ON EN 5 OFF Figure 2. ADP125 with Adjustable Output Voltage 08476-002 GENERAL DESCRIPTION The ADP124/ADP125 are low quiescent current, low dropout linear regulators. They are designed to operate from an input voltage between 2.3 V and 5.5 V and to provide up to 500 mA of output current. The low 130 mV dropout voltage at a 500 mA load improves efficiency and allows operation over a wide input voltage range. The low 210 μA of quiescent current with a 500 mA load makes the ADP124/ADP125 ideal for battery-operated portable equipment. The ADP124 is capable of 31 fixed-output voltages from 1.75 V to 3.3 V. The ADP125 is the adjustable version of the device and allows the output voltage to be set between 0.8 V and 5.0 V by an external voltage divider. The ADP124/ADP125 are specifically designed for stable operation with tiny 1 µF ceramic input and output capacitors to meet the requirements of high performance, space constrained applications. The ADP124/ADP125 have an internal soft start that gives a constant start-up time of 350 µs. Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP124/ADP125 are available in 8-lead exposed paddle MSOP and LFCSP packages. When compared with the standard MSOP and LFCSP packages, the exposed paddle MSOP and LFCSP packages have lower thermal resistance (θJA). The lower thermal resistance package allows the ADP124/ ADP125 to meet the needs of a variety of portable applications while minimizing the rise in junction temperature. Rev. D Document Feedback 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 registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2009–2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADP124/ADP125 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Typical Application Circuits............................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Recommended Capacitor Specifications................................... 4 Absolute Maximum Ratings............................................................ 5 Thermal Data ................................................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 REVISION HISTORY 12/14—Rev. C to Rev. D Updated Figure 46; Outline Dimensions..................................... 17 Changes to Ordering Guide .......................................................... 18 6/12—Rev. B to Rev. C Changes to Table 3............................................................................ 5 Updated Outline Dimensions ....................................................... 17 4/12—Rev.


ADP124 ADP125 LTC3586


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