MAX8625A

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

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

Data Sheet (Rev. 4)
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Part Details

  • 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
MAX8625A
High-Efficiency, Seamless Transition, Step-Up/Down DC-DC Converter
MAX8625: Typical Operating Circuit
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Documentation

Data Sheet 1

Technical Articles 3

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Hardware Ecosystem

Parts Product Life Cycle Description
Internal Power Switch Boost Regulators 2
MAX1760
PRODUCTION 0.8A, Low-Noise, 1MHz, Step-Up DC-DC Converter
MAX1763
PRODUCTION 1.5A, Low-Noise, 1MHz, Step-Up DC-DC Converter
Internal Power Switch Buck Regulators 2
MAX1556
PRODUCTION 16µA IQ, 1.2A PWM Step-Down DC-DC Converters
MAX1557
PRODUCTION 16µA IQ, 1.2A PWM Step-Down DC-DC Converters
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Evaluation Kits

MAX8625AEVKIT

Evaluation Kit for the MAX8625A

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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 Details

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
MAX8625AEVKIT
Evaluation Kit for the MAX8625A

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