Diodes Incorporated AP61402/AP61402Q Synchronous Buck Converters

Diodes Incorporated AP61402/AP61402Q Synchronous Buck Converters are devices that operate at 2.3V to 5.5V input voltage and 4A output current. These buck converters are high-efficiency devices that help to extend battery life in portable applications and reduce heat generation. The AP61402 integrates both high-side and low-side power MOSFETs, minimizing the external component count and simplifying board design. These devices operate at a 2MHz switching frequency and 0.5V ±2% reference voltage. The AP61402Q converters are suitable for automotive applications requiring specific change control, AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities. The AP61402 converters are ideal for automotive power systems, network video cameras, general-purpose POL supplies, hard disk drives, wireless routers, and automotive infotainment.

Features

  • 2.3V to 5.5V VIN input voltage range
  • 0.5V to 5.5V wide output voltage range
  • 4A continuous output current
  • 0.5V ±2% reference voltage
  • 20µA ultra-low quiescent current (pulse-frequency modulation)
  • 2MHz switching frequency
  • Programmable modulation mode through EN
    • Pulse-frequency modulation
    • Pulse-width modulation regardless of output load
  • Proprietary gate driver design for best EMI reduction
  • ±5% window power-good indicator and OCP selector
  • Protection circuitry:
    • Undervoltage Lockout (UVLO)
    • VIN Overvoltage Protection (OVP)
    • Peak and valley current limit
    • Thermal shutdown
  • Totally lead-free and fully RoHS Compliant
  • Halogen and antimony-free "Green" device
  • AP61402Q is suitable for automotive applications requiring specific change control
  • Suffix Q is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949-certified facilities

Applications

  • AP61402Q automotive:
    • Automotive power systems
    • Automotive infotainment
    • Automotive instrument clusters
    • Automotive telematics
    • Advanced driver assistance systems
  • AP61402:
    • General-purpose POL supplies
    • Network video cameras
    • Wireless routers
    • Hard disk drivers

Application Diagram

Application Circuit Diagram - Diodes Incorporated AP61402/AP61402Q Synchronous Buck Converters

Block Diagram

Block Diagram - Diodes Incorporated AP61402/AP61402Q Synchronous Buck Converters
Published: 2025-06-27 | Updated: 2025-07-10