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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.

Low V_IN

Mid V_IN

Wide V_IN

LDOs with Reset Circuits

High Voltage LDOs

Negative LDOs

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Related Video

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

Featured Products

MAX38912 11µV_RMS 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

11µV_RMS 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

Printable Data Sheet Evaluation Kit

MAX38911 11µV_RMS 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

11µV_RMS 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

Printable Data Sheet Evaluation Kit

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
- 5.1µV_RMS 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

Printable Data Sheet Evaluation Kit

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
- 5.1µV_RMS 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

Printable Data Sheet Evaluation Kit

MAX38913 4µV_RMS 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
- 4µV_RMS 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

Printable Data Sheet Evaluation Kit

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
37µV_RMS 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 I_MAX1/2/3 Load (3.3V_IN)
< 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

Printable Data Sheet Evaluation Kit

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
37µV_RMS 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 I_MAX1/2/3 Load (3.3V_IN)
< 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

Printable Data Sheet Evaluation Kit

MAX25300B 12µV_RMS 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
12µV_RMS 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 (3.6V_IN)
< 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

Printable Data Sheet Evaluation Kit

MAX25300A 12µV_RMS 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
12µV_RMS 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 (3.6V_IN)
< 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

Printable Data Sheet Evaluation Kit

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

7µV_RMS 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

Printable Data Sheet Evaluation Kit

MAX38912 11µV_RMS 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

11µV_RMS 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

Printable Data Sheet Evaluation Kit

MAX38911 11µV_RMS 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

11µV_RMS 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

Printable Data Sheet Evaluation Kit

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
- 5.1µV_RMS 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

Printable Data Sheet Evaluation Kit

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
- 5.1µV_RMS 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

Printable Data Sheet Evaluation Kit

MAX38913 4µV_RMS 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
- 4µV_RMS 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

Printable Data Sheet Evaluation Kit

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
37µV_RMS 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 I_MAX1/2/3 Load (3.3V_IN)
< 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

Printable Data Sheet Evaluation Kit

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
37µV_RMS 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 I_MAX1/2/3 Load (3.3V_IN)
< 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

Printable Data Sheet Evaluation Kit

MAX25300B 12µV_RMS 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
12µV_RMS 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 (3.6V_IN)
< 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

Printable Data Sheet Evaluation Kit

MAX25300A 12µV_RMS 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
12µV_RMS 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 (3.6V_IN)
< 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

Printable Data Sheet Evaluation Kit

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

7µV_RMS 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

Printable Data Sheet Evaluation Kit

Reference Designs

Oceanside (MAXREFDES9#): 3.3V to 15V Input, ±15V (±12V) Output, Isolated Power Supply

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