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Linear Regulators (LDOs) 
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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.
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
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
MAX1935 500mA, Low-Voltage Linear Regulator in Tiny DFN
The MAX1935 low-dropout linear regulator operates from a 2.25V to 5.5V supply and delivers a gua...
- Guaranteed 500mA Output Current
- Output Down to 0.8V
- Low 175mV Dropout at 500mA
- ±1.5% Output Voltage Accuracy
- Preset at 1.5V
- Adjustable from 0.8V to 4.5V
- Power-OK Output
- Low 210µA Ground Current
- 0.02µA Shutdown Current
- Thermal-Overload Protection
- Output Current Limit
- Tiny 1.9W, 8-Pin 3mm x 3mm Thin DFN Package
MAX17510 Low-Voltage DDR Linear Regulators
The MAX1510/MAX17510 DDR linear regulators source and sink up to 3A peak (typ) using internal n-...
- Internal Power MOSFETs with Current Limit (3A typ)
- Fast Load-Transient Response
- External Reference Input with Reference Output Buffer
- 1.1V to 3.6V Power Input
- ±15mV (max) Load-Regulation Error
- Thermal-Fault Protection
- Shutdown Input
- Power-Good Window Comparator with 2ms (typ) Delay
- Small, Low-Profile 10-Pin, 3mm × 3mm TDFN Package
- Ceramic or Polymer Output Capacitors
MAX1510 Low-Voltage DDR Linear Regulators
The MAX1510/MAX17510 DDR linear regulators source and sink up to 3A peak (typ) using internal n-...
- Internal Power MOSFETs with Current Limit (3A typ)
- Fast Load-Transient Response
- External Reference Input with Reference Output Buffer
- 1.1V to 3.6V Power Input
- ±15mV (max) Load-Regulation Error
- Thermal-Fault Protection
- Shutdown Input
- Power-Good Window Comparator with 2ms (typ) Delay
- Small, Low-Profile 10-Pin, 3mm × 3mm TDFN Package
- Ceramic or Polymer Output Capacitors
MAX38904A 1.7V–5.5VIN, 2A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output cur...
- 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 Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38904B 1.7V–5.5VIN, 2A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output cur...
- 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 Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38904C 1.7V–5.5VIN, 2A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output cur...
- 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 Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38904D 1.7V–5.5VIN, 2A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output cur...
- 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 Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38903C 1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38903A/B/C/D are a family of low-noise linear regulators that deliver up to 1A of output ...
- Delivers Flexible Operating Range
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.0V Programmable Output Voltage
- 1A Maximum Output Current
- 100mV Maximum Dropout at 1A Load
- < 1µA Shutdown Supply Current
- Reduces Noise and Improves Accuracy
- ±1% DC Accuracy Over Load, Line, and Temperature
- 7µVRMS Output Noise, 10Hz to 100kHz
- 1200µA Operating Supply Current
- 70dB PSRR at 10kHz
- Enables Ease-of-Use and Robust Protection
- Stable with 4µF(min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reverse Current Protection
- Power-OK Output
- Reduces Size, Improves Reliability
- 3mm x 3mm, 10-pin TDFN Package and 1.4mm x 1.4mm, 3 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38903D 1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38903A/B/C/D are a family of low-noise linear regulators that deliver up to 1A of output ...
- Delivers Flexible Operating Range
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.0V Programmable Output Voltage
- 1A Maximum Output Current
- 100mV Maximum Dropout at 1A Load
- < 1µA Shutdown Supply Current
- Reduces Noise and Improves Accuracy
- ±1% DC Accuracy Over Load, Line, and Temperature
- 7µVRMS Output Noise, 10Hz to 100kHz
- 1200µA Operating Supply Current
- 70dB PSRR at 10kHz
- Enables Ease-of-Use and Robust Protection
- Stable with 4µF(min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reverse Current Protection
- Power-OK Output
- Reduces Size, Improves Reliability
- 3mm x 3mm, 10-pin TDFN Package and 1.4mm x 1.4mm, 3 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
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
MAX1935 500mA, Low-Voltage Linear Regulator in Tiny DFN
The MAX1935 low-dropout linear regulator operates from a 2.25V to 5.5V supply and delivers a gua...
- Guaranteed 500mA Output Current
- Output Down to 0.8V
- Low 175mV Dropout at 500mA
- ±1.5% Output Voltage Accuracy
- Preset at 1.5V
- Adjustable from 0.8V to 4.5V
- Power-OK Output
- Low 210µA Ground Current
- 0.02µA Shutdown Current
- Thermal-Overload Protection
- Output Current Limit
- Tiny 1.9W, 8-Pin 3mm x 3mm Thin DFN Package
MAX17510 Low-Voltage DDR Linear Regulators
The MAX1510/MAX17510 DDR linear regulators source and sink up to 3A peak (typ) using internal n-...
- Internal Power MOSFETs with Current Limit (3A typ)
- Fast Load-Transient Response
- External Reference Input with Reference Output Buffer
- 1.1V to 3.6V Power Input
- ±15mV (max) Load-Regulation Error
- Thermal-Fault Protection
- Shutdown Input
- Power-Good Window Comparator with 2ms (typ) Delay
- Small, Low-Profile 10-Pin, 3mm × 3mm TDFN Package
- Ceramic or Polymer Output Capacitors
MAX1510 Low-Voltage DDR Linear Regulators
The MAX1510/MAX17510 DDR linear regulators source and sink up to 3A peak (typ) using internal n-...
- Internal Power MOSFETs with Current Limit (3A typ)
- Fast Load-Transient Response
- External Reference Input with Reference Output Buffer
- 1.1V to 3.6V Power Input
- ±15mV (max) Load-Regulation Error
- Thermal-Fault Protection
- Shutdown Input
- Power-Good Window Comparator with 2ms (typ) Delay
- Small, Low-Profile 10-Pin, 3mm × 3mm TDFN Package
- Ceramic or Polymer Output Capacitors
MAX38904A 1.7V–5.5VIN, 2A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output cur...
- 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 Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38904B 1.7V–5.5VIN, 2A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output cur...
- 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 Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38904C 1.7V–5.5VIN, 2A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output cur...
- 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 Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38904D 1.7V–5.5VIN, 2A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output cur...
- 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 Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38903C 1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38903A/B/C/D are a family of low-noise linear regulators that deliver up to 1A of output ...
- Delivers Flexible Operating Range
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.0V Programmable Output Voltage
- 1A Maximum Output Current
- 100mV Maximum Dropout at 1A Load
- < 1µA Shutdown Supply Current
- Reduces Noise and Improves Accuracy
- ±1% DC Accuracy Over Load, Line, and Temperature
- 7µVRMS Output Noise, 10Hz to 100kHz
- 1200µA Operating Supply Current
- 70dB PSRR at 10kHz
- Enables Ease-of-Use and Robust Protection
- Stable with 4µF(min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reverse Current Protection
- Power-OK Output
- Reduces Size, Improves Reliability
- 3mm x 3mm, 10-pin TDFN Package and 1.4mm x 1.4mm, 3 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
MAX38903D 1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38903A/B/C/D are a family of low-noise linear regulators that deliver up to 1A of output ...
- Delivers Flexible Operating Range
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.0V Programmable Output Voltage
- 1A Maximum Output Current
- 100mV Maximum Dropout at 1A Load
- < 1µA Shutdown Supply Current
- Reduces Noise and Improves Accuracy
- ±1% DC Accuracy Over Load, Line, and Temperature
- 7µVRMS Output Noise, 10Hz to 100kHz
- 1200µA Operating Supply Current
- 70dB PSRR at 10kHz
- Enables Ease-of-Use and Robust Protection
- Stable with 4µF(min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reverse Current Protection
- Power-OK Output
- Reduces Size, Improves Reliability
- 3mm x 3mm, 10-pin TDFN Package and 1.4mm x 1.4mm, 3 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
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