Click here to ask about the production status of specific part numbers. MAX25301A/MAX25301B 1A Automotive Low-Noise LDO Linear Regulator General Description Benefits and Features The MAX25301A/B are low-noise automotive linear reg- 1.7V to 5.5V Input Voltage Range ulators that deliver up to 1A of output current with only 0.6V to 5.3V Programmable Output Voltage 7V of output noise from 10Hz to 100kHz. 7V Output Noise, 10Hz to 100kHz RMS RMS 1200A Operating Supply Current These regulators maintain 1% output accuracy over a 70dB PSRR at 10kHz wide input-voltage range, requiring only 100mV of input- 1A Maximum Output Current to-output headroom at full load. The 1200A no-load sup- 1% DC Accuracy Over Load, Line, and Temperature ply current is independent of dropout voltage. 100mV Maximum Dropout at 1A Load The MAX25301A has nine pin-selectable output voltages: <1A Shutdown Supply Current 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. Stable with 4F(min) Output Capacitance The MAX25301B output voltage can be adjusted to a val- Programmable Soft-Start Rate ue in the range of 0.6V to 5.3V using two external resis- Overcurrent and Overtemperature Protection tors. The MAX25301B also includes an active-high POK Output-to-Input Reverse-Current Protection signal for trouble-free load startup. Power-OK Output All versions include a programmable output soft-start rate 3mm x 3mm 10-pin TDFN Package as well as output-overcurrent and thermal-overload pro- AEC-Q100 tection. -40C to 125C Operating Temperature The MAX25301A/B are offered in a 10-pin TDFN (3mm x Ordering Information appears at end of datasheet. 3mm) package. Applications Automotive Electronics Audio Systems High-Resolution Data Acquisition Systems 19-100783 Rev 0 6/20MAX25301A/MAX25301B 1A Automotive Low-Noise LDO Linear Regulator Typical Operating Circuits VOUT V IN OUT IN (1.5V/1A) (1.7V TO 5.5V) IN OUT C IN C C BYP OUT 10uF 10nF 10uF MAX25301AMAX25301A GND BYP TDFN ENABLE EN OUTS SELA V SELECT: OUT TO GND, IN OR FLOAT HI-Z SELB EP V ADJUSTABLE OUT VIN IN OUT (0.6V TO 5.0V) (1.7V TO 5.5V) IN OUT CIN C C BYP OUT 10uF 10nF 10uF R3 MAX25301BMAX25301B 100k GND BYP TDFN Reset EN POK ENABLE R1 GS FB EP R2 19-100783 www.maximintegrated.com Maxim Integrated 2