Top

3.3V/5V or Adjustable, Step-Up Step-Down DC-DC Converters

Compact, Low-Noise, Transformerless Step-Up/Down Regulator with Single Small Inductor Has Low Output Ripple

Product Details

Key Features

Simplified Block Diagram

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 .

Key Features

  • Step-Up/Down Voltage Conversion
  • +1.8V to +11V Input Range
  • Output:
    • 5V/250mA at VIN = 1.8V
    • 5V/500mA at VIN = 3.6V
  • No External FETs Required
  • Load Disconnected from Input in Shutdown
  • Battery Drain:
    • 200µA No-Load (VIN = 4V)
    • 7µA in Standby
    • 0.2µA when Off
  • Low-Noise and High-Efficiency Modes

Applications/Uses

  • 2- to 4-Cell AA Alkaline Handheld Equipment
  • 2-, 3-, and 4-Cell Battery-Powered Equipment
  • 3.3V and Other Low-Voltage Systems
  • Battery-Powered Devices with AC Input Adapters
  • Digital Still Cameras
  • Single-Cell, Lithium-Powered Portable Devices

Description

The MAX710/MAX711 integrate a step-up DC-DC converter with a linear regulator to provide step-up/down voltage conversion. They are optimized for battery applications where the input varies above and below the regulated output voltage. They have an input range from +1.8V to +11V. Typical efficiency when boosting battery inputs is 85%.

The MAX710/MAX711 can be configured for minimum noise or optimum efficiency. Shutdown control turns off the part completely, disconnecting the input from the output (ISHDN = 0.2µA). Standby control turns off only the step-up converter and leaves the low-power linear regulator active (IQ = 7µA).

The MAX710 has a preset 3.3V or 5V output voltage. The MAX711 has an adjustable output that can be set from +2.7V to +5.5V with two resistors. Both devices come in 16-pin narrow SO packages.

Simplified Block Diagram

MAX710, MAX711: Typical Operating Circuit MAX710, MAX711: Typical Operating Circuit 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 .