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

MAX38913属于集成电路（IC） > 线性 + 开关稳压器。亚德诺半导体技术有限公司制造生产的MAX38913稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。