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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.


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Fundamentals of Linear Regulators: LDO to SEPIC
14:35 January 09, 2019

Featured Products

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

MAX25302B 2A Automotive Low Noise LDO Linear Regulators

The MAX25302A/B are 1.7V–5.5V VIN, low-noise linear regulators that delivers up to 2A of output ...
  • Delivers Flexible Operating Range
    • 1.7V to 5.5V Input Voltage Range
    • 0.6V to 5.0V Programmable Output Voltage
    • 2A Maximum Output Current
    • 100mV Maximum Dropout at 2A Load
    • < 1.5μA Shutdown Supply Current
  • Reduces Noise and Improves Accuracy
    • ±1% DC Accuracy Over Load, Line, and Temperature
    • 5.1µVRMS Output Noise, 10Hz to 100kHz
    • 1.3mA Quiescent Supply Current
    • > 70dB PSRR at 10kHz
  • Enables Ease-of-Use and Robust Protection
    • Stable with 8μF (Min) Output Capacitance
    • Programmable Soft-Start Rate
    • Overcurrent and Overtemperature Protection
    • Output-to-Input Reverse-Current Protection
    • Power-OK Status Pin
  • Reduces PC Board Area
    • 3mm x 3.5mm 14-pin TDFN Package
  • AEC-Q100
    • -40°C to 125°C Operating Temperature

MAX25302A 2A Automotive Low Noise LDO Linear Regulators

The MAX25302A/B are 1.7V–5.5V VIN, low-noise linear regulators that delivers up to 2A of output ...
  • Delivers Flexible Operating Range
    • 1.7V to 5.5V Input Voltage Range
    • 0.6V to 5.0V Programmable Output Voltage
    • 2A Maximum Output Current
    • 100mV Maximum Dropout at 2A Load
    • < 1.5μA Shutdown Supply Current
  • Reduces Noise and Improves Accuracy
    • ±1% DC Accuracy Over Load, Line, and Temperature
    • 5.1µVRMS Output Noise, 10Hz to 100kHz
    • 1.3mA Quiescent Supply Current
    • > 70dB PSRR at 10kHz
  • Enables Ease-of-Use and Robust Protection
    • Stable with 8μF (Min) Output Capacitance
    • Programmable Soft-Start Rate
    • Overcurrent and Overtemperature Protection
    • Output-to-Input Reverse-Current Protection
    • Power-OK Status Pin
  • Reduces PC Board Area
    • 3mm x 3.5mm 14-pin TDFN Package
  • AEC-Q100
    • -40°C to 125°C Operating Temperature

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

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...
  • 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