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Linear Regulators (LDOs) 
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1.7V to 5.5V Input Voltage Range 0.6V to 5.3V Programmable Output Voltage 7µVRMS Output Noise, 10Hz to 100kHz 1200µA Operating Supply Current 70dB PSRR at 10kHz 1A Maximum Output Current ±1% DC Accuracy Over Load, Line, and Temperature 100mV Maximum Dropout at 1A Load < 1µA Shutdown Supply Current Stable with 4µF(min) Output Capacitance Programmable Soft-Start Rate Overcurrent and Overtemperature Protection Output-to-Input Reverse-Current Protection Power-OK Output 3mm x 3mm 10-pin TDFN Package AEC-Q100 -40°C to 125°C Operating Temperature 1.7V to 5.5V Input Voltage Range 0.6V to 5.3V Programmable Output Voltage 7µVRMS Output Noise, 10Hz to 100kHz 1200µA Operating Supply Current 70dB PSRR at 10kHz 1A Maximum Output Current ±1% DC Accuracy Over Load, Line, and Temperature 100mV Maximum Dropout at 1A Load < 1µA Shutdown Supply Current Stable with 4µF(min) Output Capacitance Programmable Soft-Start Rate Overcurrent and Overtemperature Protection Output-to-Input Reverse-Current Protection Power-OK Output 3mm x 3mm 10-pin TDFN Package AEC-Q100 -40°C to 125°C Operating Temperature 
1.7V to 5.5V Input Voltage Range 0.6V to 5.3V Programmable Output Voltage 7µVRMS Output Noise, 10Hz to 100kHz 1200µA Operating Supply Current 70dB PSRR at 10kHz 1A Maximum Output Current ±1% DC Accuracy Over Load, Line, and Temperature 100mV Maximum Dropout at 1A Load < 1µA Shutdown Supply Current Stable with 4µF(min) Output Capacitance Programmable Soft-Start Rate Overcurrent and Overtemperature Protection Output-to-Input Reverse-Current Protection Power-OK Output 3mm x 3mm 10-pin TDFN Package AEC-Q100 -40°C to 125°C Operating Temperature 1.7V to 5.5V Input Voltage Range 0.6V to 5.3V Programmable Output Voltage 7µVRMS Output Noise, 10Hz to 100kHz 1200µA Operating Supply Current 70dB PSRR at 10kHz 1A Maximum Output Current ±1% DC Accuracy Over Load, Line, and Temperature 100mV Maximum Dropout at 1A Load < 1µA Shutdown Supply Current Stable with 4µF(min) Output Capacitance Programmable Soft-Start Rate Overcurrent and Overtemperature Protection Output-to-Input Reverse-Current Protection Power-OK Output 3mm x 3mm 10-pin TDFN Package AEC-Q100 -40°C to 125°C Operating Temperature
We offer a wide range of high-performance low-dropout (LDO) linear regulators. A low dropout regulator is a voltage regulator that operates with a very small voltage difference between the regulated output voltage and the unregulated input voltage. Our low-dropout linear regulators support specific performance applications where switching voltage regulators are not the obvious choice, including:
- Low-noise, high-PSRR LDOs where signal integrity is paramount
- LDOs that withstand high voltages to protect mission critical circuitry from transients and reverse polarity
- Low-power, tiny LDOs that preserve space and battery life in portable applications.
- LDOs for digital core supplies where low voltages and high currents dominate.
Additional features such as short-circuit protection and reverse-current blocking make our LDOs the ideal choice when your application calls for performance.
Featured Technical Documents
- Ultra-Low-Noise LDO Achieves 6nV/√Hz Noise Performance
- Adding a Watchdog to a Dual-Output Power Supply
- LDO Improves White LED Current Matching
Technical Documentation
Customer Testimonials
Related Video
Fundamentals of Linear Regulators: LDO to SEPIC
14:35 January 09, 2019
Featured Products
MAX38913 4µVRMS Ultra-Low-Noise 1A LDO with Two-Level Output-Voltage Selection
The MAX38913 is a low-noise linear regulator that delivers up to 1A of load current with as low ...
- Delivers Flexible Output Range
- 1.8V to 5.5V Input Voltage Range
- 0.6V to 5.0V Output Voltage Range
- 1A Maximum Output Current
- 28mV Dropout at 1A Load Current and 5.0V Supply
- 33mV Dropout at 1A Load Current and 3.6V Supply
- Excellent DC and AC Performance
- 1% Regulation over Line, Load, and Temperature
- 4µVRMS of Output Noise, 10Hz to 100kHz
- 75dB PSRR at 10kHz
- High-Level System Integration
- Integrated Pass-Through Function
- Fast Active Discharge of 6Ω at OUT
- Dynamic Two-Level Voltage Scaling with 33 Levels for Each Option for Flexible Configuration
- Stable with 4µF (Minimum Capacitance)
- Overcurrent and Overtemperature Protection
- Power-OK/Power-on-Reset Output
- Operation Temperature Range from -40°C to +125°C
- Package
- 12-Bump, 0.4mm-Pitch WLP
- 14-Pin, 3mm x 3mm TDFN
MAX25308 Two/Three Output Low Noise LDO Linear Regulators
The MAX25307/MAX25308 are a two/three output linear regulator family that deliver up to 600mA on...
- 1.7V to 5.5V Input Voltage Range
- Factory Selectable Output Voltage of 0.6V to 3.7875V in 12.5mV Steps
- 37µVRMS Output Noise, 10Hz to 100kHz
- 1.95mA (Max) Operating Supply Current
- 70dB PSRR at 10kHz
- 600mA Maximum Output Current (OUT1)
- 300mA Maximum Output Current (OUT2/3)
- ±1.25% DC Accuracy Over Load, Line, and Temperature
- 155mV (Max) Dropout at IMAX1/2/3 Load (3.3VIN)
- < 1µA Shutdown Supply Current
- Overcurrent and Overtemperature Protection
- Output-to-Input Reversed Current Protection
- Individual Active-Low RESET Outputs
- 3mm x 3mm 16 pin TQFN Package
- -40°C to 125°C Grade 1 Automotive Temperature Range
MAX25307 Two/Three Output Low Noise LDO Linear Regulators
The MAX25307/MAX25308 are a two/three output linear regulator family that deliver up to 600mA on...
- 1.7V to 5.5V Input Voltage Range
- Factory Selectable Output Voltage of 0.6V to 3.7875V in 12.5mV Steps
- 37µVRMS Output Noise, 10Hz to 100kHz
- 1.95mA (Max) Operating Supply Current
- 70dB PSRR at 10kHz
- 600mA Maximum Output Current (OUT1)
- 300mA Maximum Output Current (OUT2/3)
- ±1.25% DC Accuracy Over Load, Line, and Temperature
- 155mV (Max) Dropout at IMAX1/2/3 Load (3.3VIN)
- < 1µA Shutdown Supply Current
- Overcurrent and Overtemperature Protection
- Output-to-Input Reversed Current Protection
- Individual Active-Low RESET Outputs
- 3mm x 3mm 16 pin TQFN Package
- -40°C to 125°C Grade 1 Automotive Temperature Range
MAX38912 11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode
The MAX38911/MAX38912 are low-noise, high-PSRR PMOS linear regulators that deliver up to a 500mA...
- Deliver Wide, Flexible Operating Range
- 1.7V to 5.5V Input Supply Range
- 0.8V to 5.0V Output Voltage Range
- 500mA Maximum Output Current
- 24.3mV Dropout at 500mA Load and 5.0V Input Voltage
- 19.2µA No-Load Supply Current in Low-Power Mode
- 332µA Supply Current in Normal Mode
- <1µA Shutdown Supply Current
- Reduce Noise and Improve Accuracy
- 11µVRMS Output Noise, 10Hz to 100kHz
- 70dB PSRR at 10kHz, 250mA Load Current, and 300mV Input and Output Voltage Separation
- ±1% DC Accuracy over Load, Line, and Temperature Variations
- Enable Ease-of-Use and Robust Protection
- Stable with 2µF (Minimum Effective) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Reverse-Current Protection
- Power-OK Output
- Reduce Size and Improve Reliability
- 1.42mm x 0.83mm, 3 x 2, 6-Bump, 0.4mm Pitch WLP
- 2mm x 2mm, 8-Pin TDFN Package
- -40°C to +125°C Operating Temperature
MAX38911 11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode
The MAX38911/MAX38912 are low-noise, high-PSRR PMOS linear regulators that deliver up to a 500mA...
- Deliver Wide, Flexible Operating Range
- 1.7V to 5.5V Input Supply Range
- 0.8V to 5.0V Output Voltage Range
- 500mA Maximum Output Current
- 24.3mV Dropout at 500mA Load and 5.0V Input Voltage
- 19.2µA No-Load Supply Current in Low-Power Mode
- 332µA Supply Current in Normal Mode
- <1µA Shutdown Supply Current
- Reduce Noise and Improve Accuracy
- 11µVRMS Output Noise, 10Hz to 100kHz
- 70dB PSRR at 10kHz, 250mA Load Current, and 300mV Input and Output Voltage Separation
- ±1% DC Accuracy over Load, Line, and Temperature Variations
- Enable Ease-of-Use and Robust Protection
- Stable with 2µF (Minimum Effective) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Reverse-Current Protection
- Power-OK Output
- Reduce Size and Improve Reliability
- 1.42mm x 0.83mm, 3 x 2, 6-Bump, 0.4mm Pitch WLP
- 2mm x 2mm, 8-Pin TDFN Package
- -40°C to +125°C Operating Temperature
MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator
The MAX25300A/B are low-noise linear regulators that deliver up to 500mA of output current with ...
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.3V Output Voltage Range
- 12µVRMS Output Noise, 10Hz to 100kHz
- 365µA Operating Supply Current
- 70dB PSRR at 10kHz
- 500mA Maximum Output Current
- ±1% DC Accuracy Over Load, Line, and Temperature
- 100mV (Max) Dropout at 500mA Load (3.6VIN)
- < 0.1µA Shutdown Supply Current
- Stable with 2µF(Min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reversed Current Protection
- POK Output
- 2mm x 2mm 8-pin TDFN Package
- AEC-Q100
- -40°C to 125°C Operating Temperature
MAX25300A 12µVRMS Low Noise 500mA LDO Linear Regulator
The MAX25300A/B are low-noise linear regulators that deliver up to 500mA of output current with ...
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.3V Output Voltage Range
- 12µVRMS Output Noise, 10Hz to 100kHz
- 365µA Operating Supply Current
- 70dB PSRR at 10kHz
- 500mA Maximum Output Current
- ±1% DC Accuracy Over Load, Line, and Temperature
- 100mV (Max) Dropout at 500mA Load (3.6VIN)
- < 0.1µA Shutdown Supply Current
- Stable with 2µF(Min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reversed Current Protection
- POK Output
- 2mm x 2mm 8-pin TDFN Package
- AEC-Q100
- -40°C to 125°C Operating Temperature
MAX25301B 1A Automotive Low-Noise LDO Linear Regulator
The MAX25301A/B are low-noise automotive linear regulators that deliver up to 1A of output curre...
MAX25301A 1A Automotive Low-Noise LDO Linear Regulator
The MAX25301A/B are low-noise automotive linear regulators that deliver up to 1A of output curre...
MAX25210 Automotive Ultra Low Quiescent Current Linear Regulator Family
The MAX25210 high-voltage linear regulator family is ideal for use in automotive and battery-ope...
- Enables System Designers to Meet Stringent Module Requirements for 100μA Quiescent Current
- Low 10µA Quiescent Current
- Up to 300mA Output-Current Capability (300mA, 200mA, 100mA, and 50mA Variants)
- User-Selectable Output Voltage (+3.3V or +5V Fixed and +0.6V to +11V Adjustable with External Resistive Divider)
- Tiny Output Capacitors Reduce Board Space and BOM Cost
- Stable Operation with 2.2µF Output Capacitor
- Accurate Active-Low RESET Output with Adjustable Delay Eliminates Need for Separate Reset IC
- Open-Drain Active-Low RESET Output with Adjustable Delay
- Fixed-Reset Threshold Options: 87.5% or 93.5%
- Operates Through Cold-Crank Conditions
- Low-Dropout Voltage of 280mV at 200mA
- +3.5V to +30V Wide Input Voltage Range, +40V Tolerant
- Robust Performance in Automotive Environment
- Thermal and Short-Circuit Protection
- High-Voltage Enable Input (+40V)
- Operating -40°C to +125°C Temperature Range
- Automotive Qualified AEC-Q100
MAX38913 4µVRMS Ultra-Low-Noise 1A LDO with Two-Level Output-Voltage Selection
The MAX38913 is a low-noise linear regulator that delivers up to 1A of load current with as low ...
- Delivers Flexible Output Range
- 1.8V to 5.5V Input Voltage Range
- 0.6V to 5.0V Output Voltage Range
- 1A Maximum Output Current
- 28mV Dropout at 1A Load Current and 5.0V Supply
- 33mV Dropout at 1A Load Current and 3.6V Supply
- Excellent DC and AC Performance
- 1% Regulation over Line, Load, and Temperature
- 4µVRMS of Output Noise, 10Hz to 100kHz
- 75dB PSRR at 10kHz
- High-Level System Integration
- Integrated Pass-Through Function
- Fast Active Discharge of 6Ω at OUT
- Dynamic Two-Level Voltage Scaling with 33 Levels for Each Option for Flexible Configuration
- Stable with 4µF (Minimum Capacitance)
- Overcurrent and Overtemperature Protection
- Power-OK/Power-on-Reset Output
- Operation Temperature Range from -40°C to +125°C
- Package
- 12-Bump, 0.4mm-Pitch WLP
- 14-Pin, 3mm x 3mm TDFN
MAX25308 Two/Three Output Low Noise LDO Linear Regulators
The MAX25307/MAX25308 are a two/three output linear regulator family that deliver up to 600mA on...
- 1.7V to 5.5V Input Voltage Range
- Factory Selectable Output Voltage of 0.6V to 3.7875V in 12.5mV Steps
- 37µVRMS Output Noise, 10Hz to 100kHz
- 1.95mA (Max) Operating Supply Current
- 70dB PSRR at 10kHz
- 600mA Maximum Output Current (OUT1)
- 300mA Maximum Output Current (OUT2/3)
- ±1.25% DC Accuracy Over Load, Line, and Temperature
- 155mV (Max) Dropout at IMAX1/2/3 Load (3.3VIN)
- < 1µA Shutdown Supply Current
- Overcurrent and Overtemperature Protection
- Output-to-Input Reversed Current Protection
- Individual Active-Low RESET Outputs
- 3mm x 3mm 16 pin TQFN Package
- -40°C to 125°C Grade 1 Automotive Temperature Range
MAX25307 Two/Three Output Low Noise LDO Linear Regulators
The MAX25307/MAX25308 are a two/three output linear regulator family that deliver up to 600mA on...
- 1.7V to 5.5V Input Voltage Range
- Factory Selectable Output Voltage of 0.6V to 3.7875V in 12.5mV Steps
- 37µVRMS Output Noise, 10Hz to 100kHz
- 1.95mA (Max) Operating Supply Current
- 70dB PSRR at 10kHz
- 600mA Maximum Output Current (OUT1)
- 300mA Maximum Output Current (OUT2/3)
- ±1.25% DC Accuracy Over Load, Line, and Temperature
- 155mV (Max) Dropout at IMAX1/2/3 Load (3.3VIN)
- < 1µA Shutdown Supply Current
- Overcurrent and Overtemperature Protection
- Output-to-Input Reversed Current Protection
- Individual Active-Low RESET Outputs
- 3mm x 3mm 16 pin TQFN Package
- -40°C to 125°C Grade 1 Automotive Temperature Range
MAX38912 11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode
The MAX38911/MAX38912 are low-noise, high-PSRR PMOS linear regulators that deliver up to a 500mA...
- Deliver Wide, Flexible Operating Range
- 1.7V to 5.5V Input Supply Range
- 0.8V to 5.0V Output Voltage Range
- 500mA Maximum Output Current
- 24.3mV Dropout at 500mA Load and 5.0V Input Voltage
- 19.2µA No-Load Supply Current in Low-Power Mode
- 332µA Supply Current in Normal Mode
- <1µA Shutdown Supply Current
- Reduce Noise and Improve Accuracy
- 11µVRMS Output Noise, 10Hz to 100kHz
- 70dB PSRR at 10kHz, 250mA Load Current, and 300mV Input and Output Voltage Separation
- ±1% DC Accuracy over Load, Line, and Temperature Variations
- Enable Ease-of-Use and Robust Protection
- Stable with 2µF (Minimum Effective) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Reverse-Current Protection
- Power-OK Output
- Reduce Size and Improve Reliability
- 1.42mm x 0.83mm, 3 x 2, 6-Bump, 0.4mm Pitch WLP
- 2mm x 2mm, 8-Pin TDFN Package
- -40°C to +125°C Operating Temperature
MAX38911 11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode
The MAX38911/MAX38912 are low-noise, high-PSRR PMOS linear regulators that deliver up to a 500mA...
- Deliver Wide, Flexible Operating Range
- 1.7V to 5.5V Input Supply Range
- 0.8V to 5.0V Output Voltage Range
- 500mA Maximum Output Current
- 24.3mV Dropout at 500mA Load and 5.0V Input Voltage
- 19.2µA No-Load Supply Current in Low-Power Mode
- 332µA Supply Current in Normal Mode
- <1µA Shutdown Supply Current
- Reduce Noise and Improve Accuracy
- 11µVRMS Output Noise, 10Hz to 100kHz
- 70dB PSRR at 10kHz, 250mA Load Current, and 300mV Input and Output Voltage Separation
- ±1% DC Accuracy over Load, Line, and Temperature Variations
- Enable Ease-of-Use and Robust Protection
- Stable with 2µF (Minimum Effective) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Reverse-Current Protection
- Power-OK Output
- Reduce Size and Improve Reliability
- 1.42mm x 0.83mm, 3 x 2, 6-Bump, 0.4mm Pitch WLP
- 2mm x 2mm, 8-Pin TDFN Package
- -40°C to +125°C Operating Temperature
MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator
The MAX25300A/B are low-noise linear regulators that deliver up to 500mA of output current with ...
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.3V Output Voltage Range
- 12µVRMS Output Noise, 10Hz to 100kHz
- 365µA Operating Supply Current
- 70dB PSRR at 10kHz
- 500mA Maximum Output Current
- ±1% DC Accuracy Over Load, Line, and Temperature
- 100mV (Max) Dropout at 500mA Load (3.6VIN)
- < 0.1µA Shutdown Supply Current
- Stable with 2µF(Min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reversed Current Protection
- POK Output
- 2mm x 2mm 8-pin TDFN Package
- AEC-Q100
- -40°C to 125°C Operating Temperature
MAX25300A 12µVRMS Low Noise 500mA LDO Linear Regulator
The MAX25300A/B are low-noise linear regulators that deliver up to 500mA of output current with ...
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.3V Output Voltage Range
- 12µVRMS Output Noise, 10Hz to 100kHz
- 365µA Operating Supply Current
- 70dB PSRR at 10kHz
- 500mA Maximum Output Current
- ±1% DC Accuracy Over Load, Line, and Temperature
- 100mV (Max) Dropout at 500mA Load (3.6VIN)
- < 0.1µA Shutdown Supply Current
- Stable with 2µF(Min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reversed Current Protection
- POK Output
- 2mm x 2mm 8-pin TDFN Package
- AEC-Q100
- -40°C to 125°C Operating Temperature
MAX25301B 1A Automotive Low-Noise LDO Linear Regulator
The MAX25301A/B are low-noise automotive linear regulators that deliver up to 1A of output curre...
MAX25301A 1A Automotive Low-Noise LDO Linear Regulator
The MAX25301A/B are low-noise automotive linear regulators that deliver up to 1A of output curre...
MAX25210 Automotive Ultra Low Quiescent Current Linear Regulator Family
The MAX25210 high-voltage linear regulator family is ideal for use in automotive and battery-ope...
- Enables System Designers to Meet Stringent Module Requirements for 100μA Quiescent Current
- Low 10µA Quiescent Current
- Up to 300mA Output-Current Capability (300mA, 200mA, 100mA, and 50mA Variants)
- User-Selectable Output Voltage (+3.3V or +5V Fixed and +0.6V to +11V Adjustable with External Resistive Divider)
- Tiny Output Capacitors Reduce Board Space and BOM Cost
- Stable Operation with 2.2µF Output Capacitor
- Accurate Active-Low RESET Output with Adjustable Delay Eliminates Need for Separate Reset IC
- Open-Drain Active-Low RESET Output with Adjustable Delay
- Fixed-Reset Threshold Options: 87.5% or 93.5%
- Operates Through Cold-Crank Conditions
- Low-Dropout Voltage of 280mV at 200mA
- +3.5V to +30V Wide Input Voltage Range, +40V Tolerant
- Robust Performance in Automotive Environment
- Thermal and Short-Circuit Protection
- High-Voltage Enable Input (+40V)
- Operating -40°C to +125°C Temperature Range
- Automotive Qualified AEC-Q100
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