MAX25301BATB/V+

The MAX25301A/B are low-noise automotive linear regulators that deliver up to 1A of output current with only 7μv RMS 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 1200μμ 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.

Applications

• Automotive Electronics
• Audio Systems
• High-Resolution Data Acquisition Systems

Key features

• 1.7V to 5.5V Input Voltage Range
• 0.6V to 5.3V Programmable Output Voltage
• 7μv RMS Output Noise, 10Hz to 100kHz
• 1200μμ 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