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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

Product Details

Key Features

Applications/Uses

Parametric specs for Linear Regulators
VIN (V) (min) 1.7
VIN (V) (max) 5.5
Rated ILOAD (mA) 500
Preset VOUT (V) 0.8V to 5.0V
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.036
ICC (µA) (max) 50
Output Voltage Noise (µV RMS) (typ) 11
Ref. Bypass Yes
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-9%
Watchdog No
Reverse Batt. Protect. Yes
Oper. Temp. (°C) -40 to +125
Package/Pins THIN WLP/6
Budgetary
Price (See Notes)
0.67
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Simplified Block Diagram

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Parameters

Parametric specs for Linear Regulators
VIN (V) (min) 1.7
VIN (V) (max) 5.5
Rated ILOAD (mA) 500
Preset VOUT (V) 0.8V to 5.0V
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.036
ICC (µA) (max) 50
Output Voltage Noise (µV RMS) (typ) 11
Ref. Bypass Yes
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-9%
Watchdog No
Reverse Batt. Protect. Yes
Oper. Temp. (°C) -40 to +125
Package/Pins THIN WLP/6
Budgetary
Price (See Notes)
0.67

Key Features

  • 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 over Load, Line, and Temperature Variations
  • Enable Ease-of-Use and Robust Protection
    • 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 x 0.83mm, 3 x 2, 6-Bump, 0.4mm Pitch WLP
    • 2mm x 2mm, 8-Pin TDFN Package
    • -40°C to +125°C Operating Temperature

Applications/Uses

  • 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

Description

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 MAX38911 is preconfigured to have a single output voltage in the range of 0.8V to 5.0V, while the output voltage on the MAX38912 can be adjusted to a value in the range of 0.8V to 5.0V by using two external feedback resistors.

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.

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

Simplified Block Diagram

MAX38911, MAX38912: Application Diagram MAX38911, MAX38912:Application Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .