General Description

The MAX38913 is a low-noise linear regulator that delivers up to 1A of load current with as low as 4μVRMS of output noise. The MAX38913 can dynamically change its output voltage between two separate levels. The MAX38913 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 consumes very little quiescent current. The MAX38913 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 MAX38913 is packaged in either a space-saving 12-bump WLP or a full-featured 3mm x 3mm, 14-pinTDFN package. Optional power-OK and power-on-resetpins are available in the 14-pin TDFN version.

Benefits and Features

•Delivers Flexible Output Range

o1.8V to 5.5V Input Voltage Range

o0.6V to 5.0V Output Voltage Range

o1A Maximum Output Current

o28mV Dropout at 1A Load Current and 5.0VSupply

o33mV Dropout at 1A Load Current and 3.6VSupply

•Excellent DC and AC Performance

o1 Regulation over Line, Load, andTemperature

o4μVRMS of Output Noise, 10Hz to 100kHz

o75dB PSRR at 10kHz

•High-Level System Integration

oIntegrated Pass-Through Function

oFast Active Discharge of 6Ω at OUT

oDynamic Two-Level Voltage Scaling with 33Levels for Each Option for FlexibleConfiguration

oStable with 4μF (Minimum Capacitance)

oOvercurrent and Overtemperature Protection

oPower-OK/Power-on-Reset Output

•Operation Temperature Range from -40°C to +125°C

•Package

o12-Bump, 0.4mm-Pitch WLP

o14-Pin, 3mm x 3mm TDFN

Applications

•Image Sensors

•Portable Sensor Applications

•SD Memory Cards