MAXIM MAX38904AATD+T

The MAX38904 is a 1.7V - 5.5V VIN, low-noise linear regulator that delivers up to 2A of output current with only 5.1μVRMS of output noise from 10Hz to 100kHz. The regulator maintains ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 1.3mA no-load supply current is independent of dropout voltage. The MAX38904A/B/C/D have a 70Ω active discharge feature to quickly discharge output capacitors. The output voltage on MAX38904B can be adjusted to a value in the range of 0.6V to 5.0V by using two external resistors. The MAX38904B also includes an active-high POK signal for trouble-free load startup. The MAX38904A 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 wafer-level package (WLP) versions of the MAX38904 are available as C and D variants. The MAX38904C uses external feedback resistors for adjusting the output voltage, while the MAX38904D has factory preset output voltages over the range of 0.7V to 5.0V in 50mV steps. All versions include a programmable output soft-start rate, output overcurrent, and thermal overload protection.

• 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
• ±1% DC Accuracy Over Load, Line, and Temperature
• 5.1μVRMS Output Noise, 10Hz to 100kHz
• 1.3mA Quiescent Supply Current

• 70dB PSRR at 10kHz

• Active Discharge of 70Ω at OUT
• Stable with 8μF (Min) Output Capacitance
• Programmable Soft-Start Rate
• Overcurrent and Overtemperature Protection
• Output-to-Input Reverse Current Protection
• Power-OK Status Pin
• 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5x3 Bump, 0.4mm Pitch WLP
• -40°C to 125°C Operating Temperature

• Communication Systems
• Test Equipment
• Medical Equipment
• High-End Audio Systems
• High-Resolution Data Acquisition Systems