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4µVRMS Ultra-Low-Noise 1A LDO with Two-Level Output-Voltage Selection

Industry’s First 1A, 4µV Lowest Output Noise LDO with Smallest Total Solution Size

Product Details

Key Features

Parametric specs for Linear Regulators
VIN (V) (min) 1.8
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 0.6
Adj. VOUT (V) (max) 5
Rated ILOAD (mA) 1000
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.028
ICC (µA) (max) 2000
Output Voltage Noise (µV RMS) (typ) 4
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/12
Budgetary
Price (See Notes)
1.11
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Simplified Block Diagram

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Parameters

Parametric specs for Linear Regulators
VIN (V) (min) 1.8
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 0.6
Adj. VOUT (V) (max) 5
Rated ILOAD (mA) 1000
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.028
ICC (µA) (max) 2000
Output Voltage Noise (µV RMS) (typ) 4
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/12
Budgetary
Price (See Notes)
1.11

Key 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
    • 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/Uses

  • Image Sensors
  • Portable Sensor Applications
  • SD Memory Cards

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-pin TDFN package. Optional power-OK and power-on-reset pins are available in the 14-pin TDFN version.

Simplified Block Diagram

MAX38913: Application Diagram MAX38913: 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 .