MAX8625
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MAX8625

High-Efficiency, Seamless Transition, Step-Up/Down DC-DC Converter

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Glitch-Free, Smooth Step-Up/Down Transition H-Bridge Converter

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.45
Features
  • Four Internal MOSFET True H-Bridge Buck/Boost
  • Glitch-Free, Buck-Boost Transitions
  • Minimal Output Ripple Variation on Transitions
  • Up to 92% Efficiency
  • 37µA (typ) Quiescent Current in Skip Mode
  • 2.5V to 5.5V Input Range
  • Fixed 3.3V or Adjustable Output
  • 1µA (max) Logic-Controlled Shutdown
  • True Shutdown
  • Output Overload Protection
  • Internal Compensation
  • Internal Soft-Start
  • 1MHz Switching Frequency
  • Thermal-Overload Protection
  • Small 3mm x 3mm, 14-Pin TDFN Package
Additional Details
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The MAX8625A PWM step-up/down regulator is intended to power digital logic, hard disk drives, motors, and other loads in portable, battery-powered devices such as PDAs, cell phones, digital still cameras (DSCs), and MP3 players. The MAX8625A provides either a fixed 3.3V or adjustable output voltage (1.25V to 4V) at up to 0.8A from a 2.5V to 5.5V input. The MAX8625A utilizes a 2A peak current limit.

Maxim's H-bridge topology provides a seamless transition through all operating modes without the glitches commonly seen with other devices. Four internal MOSFETs (two switches and two synchronous rectifiers) with internal compensation minimize external components. An active-low SKIP input selects a low-noise, fixed-frequency PWM mode, or a high-efficiency skip mode where the converter automatically switches to PFM mode under light loads for best light-load efficiency. The internal oscillator operates at 1MHz to allow for a small external inductor and capacitors.

The MAX8625A features current-limit circuitry that shuts down the IC in the event of an output overload. In addition, soft-start circuitry reduces inrush current during startup. The IC also features True Shutdown™, which disconnects the output from the input when the IC is disabled. The MAX8625A is available in a 3mm x 3mm, 14-pin TDFN package.

Applications

  • Battery-Powered Hard Disk Drive (HDD)
  • DSCs and Camcorders
  • MP3 Players and Cellular Phones
  • PDAs and Smartphones
Part Models 2
1ku List Price Starting From $3.45

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX8625AETD+
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MAX8625AETD+T
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Part Models

Product Lifecycle

PCN

Mar 9, 2023

- 2276A

WAFER FAB

MAX8625AETD+

PRODUCTION

MAX8625AETD+T

PRODUCTION

Jun 20, 2016

- 1612

ASSEMBLY

MAX8625AETD+

PRODUCTION

MAX8625AETD+T

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Mar 9, 2023

- 2276A

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WAFER FAB

MAX8625AETD+

PRODUCTION

MAX8625AETD+T

PRODUCTION

Jun 20, 2016

- 1612

arrow down

ASSEMBLY

MAX8625AETD+

PRODUCTION

MAX8625AETD+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX8625AEVKIT

Evaluation Kit for the MAX8625A

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MAX8625AEVKIT

Evaluation Kit for the MAX8625A

Evaluation Kit for the MAX8625A

Features and Benefits

  • 2.5V to 5.5V Input-Voltage Range
  • 3.3V Preset Output Voltage
  • Programmable Output Voltage from 1.25V to 4.2V
  • Glitch-Free Step-Up/Step-Down Transitions
  • Selectable Switching Modes
    • FPWM Mode
    • High-Efficiency Skip Mode
  • Soft-Start
  • Output Overload Protection
  • Thermal Protection
  • Small 3mm x 3mm, 14-Pin TDFN IC Package
  • Lead(Pb)-Free and RoHS Compliant
  • Fully Assembled and Tested

Product Detail

The MAX8625A evaluation kit (EV kit) is a fully assembled and tested PCB demonstrating the MAX8625A step-up/step-down switching regulator. The MAX8625A utilizes Maxim's proprietary H-bridge topology that provides seamless transitions through all converter operating modes without the glitches commonly seen with other similar devices. The MAX8625A EV kit converts a 2.5V to 5.5V DC input to a preprogrammed 3.3V output capable of providing up to 800mA. The output voltage is also programmable from 1.25V to 4.2V by use of a resistor-divider. The MAX8625A EV kit provides on-board jumper settings that allow programming one of two switching modes: fixed-frequency PWM (FPWM) or high-efficiency skip. Additional on-board jumpers allow enable or shutdown of the MAX8625A IC.

Applications

  • Battery-Powered Hard Disk Drive (HDD)
  • DSCs and Camcorders
  • MP3 Players and Cellular Phones
  • PDAs and Smartphones

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