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MAX8902A, MAX8902B

Low-Noise 500mA LDO Regulators in a 2mm x 2mm TDFN Package

Low-Noise, Low-Dropout, High-PSRR, 500mA Linear Regulators in a 2mm x 2mm TDFN Package

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • 1.7V to 5.5V Input Voltage Range
  • 0.6V to 5.3V Output Voltage Range
  • 16µVRMS Output Noise, 10Hz to 100kHz
  • 80µA Operating Supply Current
  • 92dB PSRR at 5kHz
  • Guaranteed 500mA Output Current
  • ±1.5% Output Accuracy Over Load, Line, and Temperature
  • 100mV (max) Dropout at 500mA Load
  • < 1µA Shutdown Supply Current
  • 700mA Short-Circuit Protection
  • Thermal-Overload Protection
  • Output-to-Input Reverse Current Protection
  • 2mm x 2mm x 0.8mm TDFN Package

Applications/Uses

  • MP3 and Portable Media Players
  • Notebook Computers
  • Smartphones

Description

The MAX8902A/MAX8902B low-noise linear regulators deliver up to 500mA of output current with only 16µVRMS of output noise in a 100kHz bandwidth. These regulators maintain their output voltage over a wide input range, requiring only 100mV of input-to-output headroom at full load.

These LDOs maintain a low 80µA typical supply current, independent of the load current and dropout voltage. The regulator control circuitry includes a programmable soft-start circuit and short circuit, reverse current, and thermal-overload protection. Other features include an enable input and a power-OK output (MAX8902B only).

The MAX8902A output voltage can be set to 1.5V, 1.8V, 2.0V, 2.5V, 3.0V, 3.1V, 3.3V, 4.6V, or 4.7V using the SELA and SELB inputs. The MAX8902B output voltage can be set between 0.6V and 5.3V with an external resistor voltage-divider.

Simplified Block Diagram

MAX8902A, MAX8902B: Typical Operating Circuits MAX8902A, MAX8902B: Typical Operating Circuits 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 .