MAX38914中文资料4μVRMS Ultra-Low-Noise 1A LDO with Two-Level Output Voltage Selection数据手册ADI规格书

描述 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.

Applications

Image SensorsPortable Sensor ApplicationsSD Memory Cards

特性 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

应用 Application

• 图像传感器
• 便携式传感器应用
• SD存储卡