LDO Linear Regulators
Analog Devices manufactures a broad line of high performance low dropout (LDO) linear regulators. These LDO linear regulators offer very low dropout, fast transient response, and excellent line and load regulation, features that add performance value to end applications in Wired/Wireless and Audio Systems, FPGA/DSP/µC Power, and RF and instrumentation. The wide selection of our LDO Linear Regulators offer a great variety of features that meet your need in any design, whether it's low noise, high PSRR, or compact packaging.
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Latest Resources
Application Notes
- AN-1421: Paralleling the ADP1763 LDO Regulators for High Output Current Applications (Rev. 0) PDF
- AN159 - Measuring 2nV/√Hz Noise and 120dB Supply Rejection on Linear Regulators PDF
- AN-1120: Noise Sources in Low Dropout (LDO) Regulators (Rev. 0) PDF
- AN52 - Linear Technology Magazine Circuit Collection, Volume 1 PDF
- AN65 - A Fourth Generation of LCD Backlight Technology PDF
- AN126 - 2-Wire Virtual Remote Sensing for Voltage Regulators - Clairvoyance Marries Remote Sensing PDF
- AN-1099: Capacitor Selection Guidelines (Rev. 0) PDF
- AN-1072: How to Successfully Apply Low Dropout Regulators PDF
- AN63 - Power for Pentium Processors; Meeting VRE Requirements PDF
- AN98 - Signal Sources, Conditioners and Power Circuitry Circuits of the Fall, 2004 PDF
- AN101 - Minimizing Switching Regulator Residue in Linear Regulator Outputs PDF
- AN84 - Linear Technology Magazine Circuit Collection, Volume IV PDF
- AN83 - Performance Verification of Low Noise, Low Dropout Regulators PDF
- AN70 - A Monolithic Switching Regulator with 100µV Output Noise PDF
- AN69 - LT1575 UltraFast Linear Controller Makes Fast Transient Response Power Supplies PDF
- AN67 - Linear Technology Magazine Circuit Collection, Volume III PDF
- AN66 - Linear Technology Magazine Circuit Collection, Volume II PDF
- AN64 - Using the LTC1325 Battery Management IC: PDF
- AN60 - PCMCIA Card and Card Socket Power Management: PDF
- AN58 - 5V to 3.3V Converters for Microprocessor Systems PDF
- AN54 - Power Conversion from Milliamps to Amps at Ultra-High Efficiency (Up to 95%) PDF
- AN53 - Micropower High Side MOSFET Drivers PDF
- AN51 - Power Conditioning for Notebook and Palmtop Systems PDF
Press Release
- Negative Output, 500mA Low Dropout Linear Regulator Has Ultralow Noise & Ultrahigh PSRR
- 3A, 95mV Low Dropout LDO Features Low Power Loss in a Small 3mm × 4mm Footprint
- 3.2MHz, Automotive Grade Quad 1A Step-Down Regulators + LDO Reduces Footprint & EMI
- Multi-output Regulators with Supervisory and Watchdog Timers Reduce Component Count, Increase Power Density and Reliability
Design Notes
- Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions
- Dual Linear Regulator for Digital IC Power Enables On-the-Fly Output Adjustment and Dynamic Headroom Optimization
- Negative Linear Regulator Features 0.8 µV RMS Noise and 74 dB Power Supply Rejection Ratio at 1 MHz
- DN228 - Isolated RS485 Transceiver Breaks Ground Loops PDF
- DN157 - UltraFast Linear Regulator Eliminates All Bulk Tantalum and Electrolytic Output Capacitors PDF
- DN96 - 12-Bit Rail-to-Rail Micropower DACs in an SO-8 PDF
- DN529 - Control the Voltage of a Remote Load Over Any Length of Copper Wire PDF
- DN170 - Battery Backup Regulator is Glitch-Free and Low Dropout PDF
- DN172 - High Efficiency Linear and Switching Solutions for Splitting a Digital Supply PDF
- DN121 - New Micropower, Low Dropout Regulators Ease Battery Supply Designs PDF
- DN179 - Micropower 600kHz Step-Up DC/DC Converter Delivers 5V at 1A from a Li-Ion Cell PDF
- DN220 - Lowest Noise SOT-23 LDOs Have 20µA Quiescent Current, 20µVrms Noise PDF
- DN314 - 80V Linear Regulator is Micropower PDF
- DN292 - Very Low Dropout (VLDO) Linear Regulators Supply Low Voltage Outputs PDF
- DN119 - LT1580 Fast Response Low Dropout Regulator Achieves 0.4 Dropout at 4 Amps PDF
- DN115 - Create a Virtual Ground with the LT1118-2.5 Sink/Source Voltage Regulator PDF
- DN82 - 5V to 3.3V Regulator with Fail-Safe Switchover PDF
- DN210 - 2-Phase, Dual Switching Regulator Fits in Tight Places PDF
- DN367 - Tiny Versatile Buck Regulators Operate from 3.6V to 36V Input PDF
- DN316 - Ultralow Noise Switching Power Supplies Simplify EMI Compliance PDF
- DN74 - Techniques for Deriving 3.3V from 5V Supplies PDF
- DN122 - Dual Regulators Power Pentium® Processor or Upgrade CPU PDF
- DN91 - 5V to 3.3V Circuit Collection PDF
- DN90 - High Efficiency Power Sources for Pentium TM Processors PDF
- DN87 - Fast Regulator Paces High Performance Processors PDF
Product Selector Card
- DC/DC Controller Selection Guide PDF
- High Performance Low Dropout Linear Regulators (LDOs) PDF
- New 3-Terminal Regulators Add Functionality PDF
- Military Plastic Products PDF
- Low Noise LDO Regulator Protects Against Fault Conditions PDF
- Rethinking Radiation Hardened Low Dropout Regulators PDF
Technical Articles
- Bypass Capacitor and Coupling Capacitor: Stabilizing Voltage the Right Way
- The Elegance of a Flyback Controller Without a Dedicated Isolated Feedback Path
- Bipolar Power Solutions for Precision Test and Measurement Systems
- Generation of Low Noise Voltages
- ADIsimPower Provides Robust, Customizable DC-DC Converter Designs
- The Fundamentals of LDO Design and Applications
- Enabling Robust Wired Condition-Based Monitoring for Industry 4.0 Part 1
- Flyback Converters Without Optocouplers: Existing Options
- Preventing Voltage Fluctuations Due to Power Supply Lines
- Supply Clean Power with Ultralow Noise LDO Regulators
- Low Noise Power Supplies Come in Many Flavors: Part 1 - Linear Regulators
- Hybrid Wide Dimming Ratio Linear LED Current Controller Using LT8614 & LT3083/LT6015
- Digital Control Enables High Reliability DC-to-DC Power Conversion with Active Snubbing
- Common Questions About the LTC2668 Family of 16bit VOUT DACs
- AN159: Measuring 2nV/√Hz Noise and 120dB Supply Rejection on Linear Regulators - The Quest for Quiet
- A New Era in Space Products - Radiation Tolerant
- Shutdown with the LT3080x Current Source Reference Linear Regulators
- Increasing Output Current of the Ultralow Noise, Ultrahigh PSRR LT3042 200mA Linear Regulator
- Paralleling Linear Regulators Made Easy
- Loop Gain and its Effect on Analog Control Systems
- Output Voltage Noise Measurements for Linear Regulators
- Linear Regulators with Active Output Discharge Target Systems Needing Fast Power Down
- High Performance Portable DC Bench Power Supply: Save Money and Free Up Bench Real Estate by Building Your Own
- Dual 500mA µPower LDO Features Independent 1.8V–20V Inputs and Easy Sequencing in a 4mm × 3mm DFN
- Part 2: Simplifying Design of Industrial Process-Control Systems with PLC Evaluation Boards
- Diode Turn-On Time Induced Failures in Switching Regulators
- 3µA Quiescent Current LDO Improves Efficiency for Low Power Circuits in Industrial, Automotive and Battery-Powered Systems
- LDO Linear Regulators Rival Switchers for Efficiency
- Power Supply Tracking for Linear Regulators
- Dual Regulators Offer Flexibility with Independent Shutdown Control and Adjustable Start-Up Timing
- Hot Swap Controller with Power-Up Timeout Function Simplifies Hot Swapping Boards with Multiple Power Supplies
- Very Low Dropout (VLDO) Linear Regulator Outperforms Switching Regulators in Low VOUT Applications
- Micropower Negative LDO Provides a Quiet Output in SOT-23
- Micropower LDO Has the Lowest Noise and Quiescent Current in SOT-23
Product Selection Guide
Circuit Note
- CN0343: Ultrasonic Distance Measurement PDF
- CN0228: Single Supply Powers a 28 V, High Voltage Phase-Locked Loop (PLL) Synthesizer PDF
- CN0319: 14-Bit, 4-20 mA, Loop Powered, Ther mocouple Temperature Measurement System Using ARM Cortex-M3 PDF
- CN0305: A 16-Bit, 300 kSPS Low Power Successive Approximation ADC System with Optimum Low Power Drive Amplifier for Sub-Nyquist Input Signals Up to 4 kHz PDF
- CN0276: High Performance, 10-Bit to 16-Bit Resolver-to-Digital Converter PDF
- CN0280: Robust Completely Isolated Current Sense Circuit with Isolated Power Supply for Solar Photovoltaic Converters PDF
- CN-0285: Broadband Low Error Vector Magnitude (EVM) Direct Conversion Transmitter PDF
Solutions Bulletins & Brochures
Videos
- 5G O-RAN O-RU Radio Unit from Analog Devices & Partners
- 16Tx/16Rx L/S-Band Phased Array Radar & EW Prototyping Platform
- AD-FMCLIDAR1-EBZ: LIDAR Developmemt Platform by Analog Devices
- Direct-Sampled S-Band 16-Channel Rx/Tx Phased-Array & EW Platform
- Analog Devices 3D Time of Flight Development Platform
- Analog Devices: LIDAR FPGA Development Platform
- 3D Time of Flight Development Kit by Analog Devices and ARROW
- Getting Your Electronics Designs Finished
- 60GHz/ 10Gbps Wireless platform produced by GigaFirm
- Analog Devices Condition Based Monitoring for Industry 4.0
- Condition-Based Monitoring for Industrial Automation
- Instrumentation Amplifier Enables Remote Strain Gauge
- Power Scaling in Strain Gauge Applications
- X-Microwave & Analog Devices collaborate to offer Modular Drop-In Components
- LT3094 - Negative LDO Features 0.8µ VRMS Noise at 1MHz
- Next-Generation Sensors for Condition-Based Monitoring
- Low Voltage Power Supplies
- LT3081 Video Product Brief
- LT3015 Video Product Brief
- Minimizing Switching Regulator Residue in Linear Regulator Outputs
- Introducing the LT3070 Point-of-Load Regulator for FPGA & Server Backplanes
- LT3080 Video Product Brief
- LT3070 5A Low Voltage Digitally Programmable 85mV Low Dropout Linear Regulator
- LT3009 Video Product Brief
- Directly Parallel This High Power Density Linear Regulator - LT3080
- Lowest Noise LDOs Enable Cutting Edge Signal Chain Performance
- Ultralow Noise and Ultrahigh PSRR
- 2.1A LDO+ Regulator Features Cable Drop Compensation and Monitors Current and Temperature
- 1.5A LDO+ Regulator Monitors Current and Temperature
- Low Noise Rail-to-Rail Negative Regulator with Programmable Current Limit
Analog Dialogue
Frequently Asked Question
LDO Linear Regulators
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Output Current (typ) (A) | Output Current 2 (typ) (A) | Output Voltage | Isupply (typ) (A) | RMS Noise (typ) (V) | Dropout Voltage (typ) (V) | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LT3072 | 2 | 900m | 3.45 | 2.5 | 2.5 | Adj | 7m | 12µ | 80m | $4.20 (LT3072EUFF#PBF) |
| 2 | LT3093 | 1 | -20 | -1.8 | 200m | - | Adj | 2.35m | 800n | 190m | $2.25 (LT3093EDD#PBF) |
| 3 | LT3040 | 1 | 1.8 | 20 | 200m | - | Adj | 1.9m | 1.2µ | 350m | $2.25 (LT3040EDD#PBF) |
| 4 | LT3094 | 1 | -20 | -1.8 | 500m | - | Adj | 2.35m | 800n | 235m | $2.80 (LT3094EDD#PBF) |
| 5 | LT3033 | 1 | 950m | 10 | 3 | - | Adj | 1.9m | 60µ | 95m | $3.05 (LT3033EUDC#PBF) |
| 6 | LT3070-1 | 1 | 950m | 3 | 5 | - | Adj | 1m | 25µ | 85m | $4.20 (LT3070EUFD-1#PBF) |
| 7 | LT3045-1 | 1 | 1.8 | 20 | 500m | - | Adj | 2.2m | 800n | 260m | $2.80 (LT3045EDD-1#PBF) |
| 8 | ADP7185 | 1 | -5.5 | -2 | 500m | - | -0.5, -1, -1.2, -1.5, -1.8, -2.5, -3, -3.3, Adj | 600µ | 5µ | 190m | $1.65 (ADP7185ACPZN0.5-R7) |
| 9 | ADP1765 | 1 | 1.1 | 1.98 | 5 | - | 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.25, 1.3, 1.5 | 5m | 2µ | 59m | $6.79 (ADP1765ACPZ0.85-R7) |
| 10 | ADP1764 | 1 | 1.1 | 1.98 | 4 | - | 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.25, 1.3, 1.6 | 5m | 2µ | 47m | $5.29 (ADP1764ACPZ0.85-R7) |
| 11 | LT3045 | 1 | 1.8 | 20 | 500m | - | Adj | 2.4m | 800n | 260m | $2.80 (LT3045EDD#PBF) |
| 12 | ADP7183 | 1 | -5.5 | -2 | 300m | - | -0.5, -1, -1.2, -1.5, -1.8, -2.5, -3, -3.3, Adj | 600µ | 4µ | 130m | $1.45 (ADP7183ACPZN0.5-R7) |
| 13 | LT3089 | 1 | 1.2 | 36 | 800m | - | Adj | 1.1m | 27µ | 1.47 | $2.13 (LT3089EDF#PBF) |
| 14 | ADP7159 | 1 | 2.3 | 5.5 | 2 | - | Adj | 4m | 1.6µ | 200m | $3.05 (ADP7159ACPZ-01-R7) |
| 15 | ADP7158 | 1 | 2.3 | 5.5 | 2 | - | 1.2, 1.8, 2.5, 2.8, 3.0, 3.3 | 4m | 1.6µ | 200m | $3.05 (ADP7158ACPZ-1.2-R7) |
| 16 | ADP7157 | 1 | 2.3 | 5.5 | 1.2 | - | Adj | 4m | 1.6µ | 120m | $2.69 (ADP7157ACPZ-01-R7) |
| 17 | ADP7156 | 1 | 2.3 | 5.5 | 1.2 | - | 1.2, 1.8, 2.5, 2.8, 3.0, 3.3 | 4m | 1.6µ | 120m | $2.69 (ADP7156ACPZ-1.2-R7) |
| 18 | ADP1763 | 1 | 1.1 | 1.98 | 3 | - | 0.9, 0.95, 1, 1.1, 1.2, 1.25, 1.3, 1.5 | 4.5m | 2µ | 95m | $3.99 (ADP1763ACPZ0.95-R7) |
| 19 | ADP1762 | 1 | 1.1 | 1.98 | 2 | - | 0.9, 0.95, 1, 1.1, 1.2, 1.25, 1.3, 1.5 | 4.5m | 2µ | 62m | $3.49 (ADP1762ACPZ0.95-R7) |
| 20 | ADP1761 | 1 | 1.1 | 1.98 | 1 | - | 0.9, 0.95, 1, 1.1, 1.2, 1.25, 1.3, 1.5 | 4.5m | 2µ | 30m | $3.09 (ADP1761ACPZ0.95-R7) |
| 21 | LT3066 | 1 | 1.8 | 45 | 500m | - | Adj | 64µ | 25µ | 300m | $2.00 (LT3066EDE#PBF) |
| 22 | LT3091 | 1 | -36 | -1.5 | 1.5 | - | -Adj | 1.2m | 18µ | 300m | $2.87 (LT3091EDE#PBF) |
| 23 | LT3088 | 1 | 1.2 | 36 | 800m | - | Adj | 400µ | 27µ | 1.35 | $1.95 (LT3088EST#PBF) |
| 24 | RH1965 | 1 | 1.8 | 20 | 900m | - | Adj | 500µ | 40µ | 310m | - |
| 25 | LT3042 | 1 | 1.8 | 20 | 200m | - | Adj | 2m | 800n | 350m | $2.25 (LT3042EDD#PBF) |
| 26 | LT3062 | 1 | 1.6 | 45 | 200m | - | Adj | 45µ | 30µ | 300m | $1.60 (LT3062EDCB#TRPBF) |
| 27 | LT3061 | 1 | 1.6 | 45 | 100m | - | Adj | 45µ | 30µ | 250m | $1.55 (LT3061EDCB#TRPBF) |
| 28 | ADP7142 | 1 | 2.7 | 40 | 200m | - | 1.8, 2.5, 3.3, 5, Adj | 50µ | 11µ | 200m | $1.10 (ADP7142ACPZN1.8-R7) |
| 29 | ADP7118 | 1 | 2.7 | 20 | 200m | - | 1.8, 2.5, 3.3, 5 | 50µ | 11µ | 200m | $0.77 (ADP7118ACPZN1.8-R7) |
| 30 | ADP7112 | 1 | 2.7 | 20 | 200m | - | 1.8, 2.5, 3.3, 5 | 50µ | 11µ | 200m | $0.53 (ADP7112ACBZ-1.2-R7) |
| 31 | ADP166 | 1 | 2.2 | 5.5 | 150m | - | 1.2, 1.8, 2.2, 2.3, 2.85, 3, 3.3 | 590n | 105µ | 120m | $0.35 (ADP166ACBZ-1.2-R7) |
| 32 | ADP165 | 1 | 2.2 | 5.5 | 150m | - | 1.2, 1.8, 2.2, 2.3, 2.85, 3, 3.3 | 590n | 105µ | 120m | $0.35 (ADP165ACBZ-1.2-R7) |
| 33 | ADM7155 | 1 | 2.3 | 5.5 | 600m | - | Adj | 6.5m | 1.6µ | 120m | $2.14 (ADM7155ACPZ-01-R7) |
| 34 | ADM7154 | 1 | 2.3 | 5.5 | 600m | - | 1.2, 1.8, 2.5, 2.8, 3.0, 3.3 | 4m | 1.6µ | 120m | $2.14 (ADM7154ACPZ-1.2-R7) |
| 35 | RH3083MK | 1 | 1.2 | 23 | 2.8 | - | Adj | 350µ | 40µ | 310m | - |
| 36 | LT3063 | 1 | 1.6 | 45 | 200m | - | Adj | 45µ | 30µ | 300m | $1.67 (LT3063EDCB#TRPBF) |
| 37 | ADM7172 | 1 | 2.3 | 6.5 | 2 | - | 1.3, 1.8, 2.5, 3.0, 3.3, 4.2, 5.0 | 700µ | 5µ | 172m | $1.79 (ADM7172ACPZ-1.3-R7) |
| 38 | ADM7171 | 1 | 2.3 | 6.5 | 1 | - | 1.3, 1.8, 2.5, 3.0, 3.3, 4.2, 5.0 | 700µ | 5µ | 84m | $1.19 (ADM7171ACPZ-1.3-R7) |
| 39 | ADM7170 | 1 | 2.3 | 6.5 | 500m | - | 1.3, 1.8, 2.5, 3.0, 3.3, 4.2, 5.0 | 700µ | 5µ | 42m | $0.88 (ADM7170ACPZ-1.3-R7) |
| 40 | LT3065 | 1 | 1.8 | 45 | 500m | - | 1.2, 1.5, 1.8, 2.5, 3.3, 5, Adj | 55µ | 25µ | 300m | $1.85 (LT3065EDD#PBF) |
| 41 | LT3090 | 1 | -36 | -1.5 | 600m | - | -Adj | 1m | 18µ | 300m | $2.15 (LT3090EDD#PBF) |
| 42 | ADM7151 | 1 | 4.5 | 16 | 800m | - | Adj | 4.3m | 1.6µ | 600m | $3.64 (ADM7151ACPZ-02-R7) |
| 43 | ADM7150 | 1 | 4.5 | 16 | 800m | - | 1.8, 2.8, 3.0, 3.3, 4.5, 4.8, 5.0 | 4.3m | 1.6µ | 600m | $3.64 (ADM7150ACPZ-1.8-R7) |
| 44 | LT3081 | 1 | 1.2 | 36 | 1.5 | - | Adj | 1.1m | 27µ | 1.21 | $2.60 (LT3081EDF#PBF) |
| 45 | LT3055 | 1 | 2 | 45 | 500m | - | Adj | 65µ | 25µ | 350m | $2.20 (LT3055EDE#PBF) |
| 46 | ADP7105 | 1 | 3.3 | 20 | 500m | - | 1.8, 3.3, 5.0, Adj | 400µ | 15µ | 350m | $1.43 (ADP7105ACPZ-1.8-R7) |
| 47 | LT3030 | 2 | 1.8 | 20 | 750m | 250m | Adj | 120µ | 20µ | 300m | $3.27 (LT3030EFE#PBF) |
| 48 | LT3007 | 1 | 2 | 45 | 20m | - | 1.2, 1.5, 1.8, 2.5, 3.3, 5, Adj | 3µ | 92µ | 300m | $1.20 (LT3007ETS8#TRPBF) |
| 49 | ADP7182 | 1 | -28 | -2.7 | 200m | - | -1.2, -1.5, -1.8, -2.5, -3, 5, -5 | 33µ | 18µ | 185m | $1.29 (ADP7182ACPZN-1.2R7) |
| 50 | ADM7160 | 1 | 2.2 | 5.5 | 200m | - | 1.8, 2.5, 3.3 | 10µ | 9µ | 150m | $0.44 (ADM7160ACPZN1.8-R7) |
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