General Description

The MAX38913/MAX38914 is a low-noise linear regulator that delivers up to 1A of load current with as low as 4μVRMS of output noise. The MAX38913/MAX38914 can dynamically change its output voltage between two separate levels. The MAX38913/MAX38914 has the pass-through mode which, when enabled, completely bypasses the linear regulator.

This regulator maintains ±1 output accuracy over a wide input voltage range, temperature, and load conditions. The no-load quiescent current in the regulation mode is 1.37mA. During the pass-through mode, unlike the conventional dropout mode of an LDO, the MAX38913/MAX38914 consumes very little quiescent current. The MAX38913/MAX38914 has a 6Ω active discharge feature to quickly discharge output capacitors of up to 300μF.

The MAX38913 has 33 programmable output-voltage settings for both voltage selections. The MAX38914 has pre-programmed output voltage levels of 2.3V and 2V.

The MAX38913/MAX38914 is packaged in either a space-saving 12-bump WLP or a full-featured 3mm x 3mm, 14-pin TDFN package. Optional power-OK and power-on-reset pins are available in the 14-pin TDFN version.

Benefits and Features

• 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

• 4μVRMS 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 (MAX38913)

• 2V, 2.3V Pre-Programmed Voltage Levels (MAX38914)

• 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

Applications

• Image Sensors

• Portable Sensor Applications

• SD Memory Cards