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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
MAX25301B
1A Automotive Low-Noise LDO Linear Regulator
Low 7µVRMS Noise 1A LDO
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Key Features
Applications/Uses
Simplified Block Diagram
Technical Docs
| Data Sheet | 1A Automotive Low-Noise LDO Linear Regulator | Jan 15, 2021 |
Support & Training
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Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Key Features
Applications/Uses
- Audio Systems
- Automotive Electronics
- High-Resolution Data Acquisition Systems
Description
The MAX25301A/B are low-noise automotive linear regulators that deliver up to 1A of output current with only 7µVRMS of output noise from 10Hz to 100kHz.
These regulators maintain ±1% output accuracy over a wide input-voltage range, requiring only 100mV of input-to-output headroom at full load. The 1200µA no-load supply current is independent of dropout voltage.
The MAX25301A has nine pin-selectable output voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX25301B output voltage can be adjusted to a value in the range of 0.6V to 5.3V using two external resistors. The MAX25301B also includes an active-high POK signal for trouble-free load startup.
All versions include a programmable output soft-start rate as well as output-overcurrent and thermal-overload protection.
The MAX25301A/B are offered in a 10-pin TDFN (3mm x 3mm) package.
These regulators maintain ±1% output accuracy over a wide input-voltage range, requiring only 100mV of input-to-output headroom at full load. The 1200µA no-load supply current is independent of dropout voltage.
The MAX25301A has nine pin-selectable output voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX25301B output voltage can be adjusted to a value in the range of 0.6V to 5.3V using two external resistors. The MAX25301B also includes an active-high POK signal for trouble-free load startup.
All versions include a programmable output soft-start rate as well as output-overcurrent and thermal-overload protection.
The MAX25301A/B are offered in a 10-pin TDFN (3mm x 3mm) package.
Technical Docs
| Data Sheet | 1A Automotive Low-Noise LDO Linear Regulator | Jan 15, 2021 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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