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Diodes Incorporated AP61100 Synchronous Buck Converter

Diodes Incorporated AP61100 Synchronous Buck Converter is a low quiescent current converter that operates at 2.3V to 5.5V wide input voltage range. This converter integrates a 110mΩ high-side power MOSFET and an 80mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion. The AP61100 converter adopts Constant On-Time (COT) control, achieving fast transient response, easy loop stabilization, and low output voltage ripple. This converter is available in a SOT563 package. Typical applications include 5V input distributed power bus supplies, white goods, small home appliances, FPGA, DSP, ASIC supplies, network video cameras, and wireless routers.

Features

  • Fully integrates a 110mΩ high-side power MOSFET and an 80mΩ low-side power MOSFET
  • Provides high-efficiency step-down DC-DC conversion
  • Adopts Constant On-Time (COT) control to achieve
    • Fast transient response
    • Easy loop stabilization
    • Low output voltage ripple
  • Programmable operation mode through EN
    • Pulse Frequency Modulation (PFM)
    • Pulse Width Modulation (PWM) regardless of output load
  • AP61102 power-good indicator
  • Protection circuitry
    • Undervoltage Lockout (UVLO)
    • VIN Over-Voltage Protection (OVP)
    • Peak current limit
    • Valley current limit
    • Thermal shutdown

Specifications

  • 2.3V to 5.5V wide input voltage range
  • 15μA low quiescent current (PFM)
  • 1A continuous output current
  • 0.6V to 3.6V output voltage range
  • 0.6V±2% reference voltage
  • 2.2MHz switching frequency (VIN=5V and VOUT=1.8V)
  • Up to 89% efficiency at 5mA light load

Applications

  • 5V input distributed power bus supplies
  • White goods and small home appliances
  • FPGA, DSP, and ASIC supplies
  • Network video cameras
  • Wireless routers
  • Consumer electronics
  • General-purpose point of load

Functional Block Diagram

Block Diagram - Diodes Incorporated AP61100 Synchronous Buck Converter

Typical Application Diagram

Application Circuit Diagram - Diodes Incorporated AP61100 Synchronous Buck Converter

Associated Product

Diodes Incorporated AP61100 Evaluation Board

Evaluates the AP61100 synchronous buck converters that offer low quiescent current.

Learn Moreabout Diodes Incorporated AP61100 Evaluation Board View Productsrelated to Diodes Incorporated AP61100 Evaluation Board

Associated Prodcut

Diodes Incorporated DC/DC Buck Converters

Offer high efficiency, cost-effectiveness, and design flexibility housed within compact designs.

Learn Moreabout Diodes Incorporated DC/DC Buck Converters View Productsrelated to Diodes Incorporated DC/DC Buck Converters
Published: 2020-03-26 | Updated: 2024-07-29