MAX38911

RECOMMENDED FOR NEW DESIGNS

11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode

Industry’s First 500mA LDO with Low-Power Mode Applied to Always-on Devices

Data Sheet (Rev. 3)
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Overview

  • Deliver Wide, Flexible Operating Range
    • 1.7V to 5.5V Input Supply Range
    • 0.8V to 5.0V Output Voltage Range
    • 500mA Maximum Output Current
    • 24.3mV Dropout at 500mA Load and 5.0V Input Voltage
    • 19.2µA No-Load Supply Current in Low-Power Mode
    • 332µA Supply Current in Normal Mode
    • <1µA Shutdown Supply Current
  • Reduce Noise and Improve Accuracy
    • 11µVRMS Output Noise, 10Hz to 100kHz
    • 70dB PSRR at 10kHz, 250mA Load Current, and 300mV Input and Output Voltage Separation
    • ±1% DC Accuracy overload, Line, and Temperature Variations
  • Enable Ease-of-Use and Robust Protection
    • Active Discharge of 800Ω at OUT
    • Stable with 2µF (Minimum Effective) Output Capacitance
    • Programmable Soft-Start Rate
    • Overcurrent and Overtemperature Protection
    • Reverse-Current Protection
    • Power-OK Output
  • Reduce Size and Improve Reliability
    • 1.42mm × 0.83mm, 3 × 2, 6-Bump, 0.4mm Pitch WLP
    • 2mm × 2mm, 8-Pin TDFN Package
    • -40°C to +125°C Operating Temperature

The MAX38911/MAX38912 are low-noise, high-PSRR PMOS linear regulators that deliver up to a 500mA load current with only 11µVRMS of output noise from 10Hz to 100kHz.

The regulators are fully protected from damage by internal circuitry that provides programmable inrush current limiting, output overcurrent limiting, reverse current limiting, and thermal overload protection. MAX38911/MAX38912 has 800Ω active discharge feature to quickly discharge output capacitors.

The MAX38911 is available in WLP and TDFN packages and are default factory preprogrammed to an output voltage of 1.8V. Custom fixed-output voltage levels in the range of 0.8V to 5.0V in 50mV steps are also available, see Ordering Information.

MAX38912 provides enhanced flexibility with adjustable output voltage in the range of 0.8V to 5.0V by using two external feedback resistors.

The MAX38911ANT is packaged in a 1.42mm × 0.83mm, 3 × 2, 6-bump, 0.4mm pitch WLP, while the MAX38911ATA and MAX38912ATA are packaged in an 8-pin, 2mm × 2mm TDFN.

Applications

  • Digital Camera and Audio Devices
  • High-Performance Sensors for Portable Applications
  • Imaging and High-Frequency Sensors
  • IoT Sensors
  • Mobile Phones
  • Portable and Battery-Powered Equipment
MAX38911
11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode
MAX38911, MAX38912:Application Diagram
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Documentation

Data Sheet 1

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Evaluation Kits

MAX38911EVK-WLP

Evaluation Kit for the MAX38911

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Features and Benefits

  • Evaluates the MAX38911 in a 6-ball (1.42mm x 0.83mm) WLP
  • 1.7V to 5.5V Input Range
  • 0.8V to 5.0V Factory-Preset Output Voltage (with IC Replacement)
  • Up to 500mA Output Current
  • Jumper-Selectable Operating Modes
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assembled and Tested

Product Details

The MAX38911 WLP evaluation kit (EV kit) evaluates the MAX38911 in a WLP package. The MAX38911 is a lownoise, high-PSRR pMOS linear regulator. The MAX38911 WLP EV kit operates over an input range of 1.7V to 5.5V, provides a factory-preset output-voltage range of 0.8V to 5.0V in 50mV steps, and can deliver up to 500mA of current. The EV kit comes with the MAX38911ANT+ (1.8V output) installed.

Applications

  • Digital Camera and Audio Devices
  • High-Performance Sensors for Portable Applications
  • Imaging and High-Frequency Sensors
  • IoT Sensors
  • Mobile Phones
  • Portable and Battery-Powered Equipment

eval board
schematic 1
MAX38912EVK-TDFN

Evaluation Kit for the MAX38912

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Features and Benefits

  • Evaluates the MAX38912 in an 8-pin (2mm x 2mm) TDFN Package
  • 1.7V to 5.5V Input Range
  • 0.8V to 5.0V External Feedback Resistor Configuration
  • Up to 500mA Output Current
  • Jumper-Selectable Operating Modes
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assembled and Tested

Product Details

The MAX38912 TDFN evaluation kit (EV kit) evaluates the MAX38912 in a TDFN package. The MAX38912 is a low-noise, high-PSRR pMOS linear regulator. The MAX38912 TDFN EV kit operates over an input range of 1.7V to 5.5V, provides an output-voltage range from 0.8V to 5.0V, and can deliver up to 500mA of current. The EV kit comes with the MAX38912ATA+ installed.

Applications

  • Digital Camera and Audio Devices
  • High-Performance Sensors for Portable Applications
  • Imaging and High-Frequency Sensors
  • IoT Sensors
  • Mobile Phones
  • Portable and Battery-Powered Equipment
MAX38911EVK-WLP
Evaluation Kit for the MAX38911
MAX38912EVK-TDFN
Evaluation Kit for the MAX38912
MAX38912EVK-TDFN: Board Photo

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