Diodes Incorporated AL8890Q/AL88902Q 60V Synchronous Buck Converters

Diodes Incorporated AL8890Q/AL88902Q 60V Synchronous Buck Converters offer internal compensation and switching frequency adjustable up to 2.5MHz. The devices integrate a 120mΩ high-side and a 55mΩ low-side power MOSFET to provide high-efficiency DC-DC conversion. The AL8890Q enables a continuous load current of up to 3.5A, while the AL88902Q enables up to 2.5A, with efficiency as high as 95% in enhanced bias. The devices feature current mode control operation, facilitating easy loop stabilization and supporting a wide range of output loading. The devices suit CV (constant voltage) and CC (constant current) applications. The Diodes Incorporated AL8890Q/AL88902Q converters simplify board layouts and reduce space requirements with a high switching frequency and use smaller-size inductors/built-in MOSFET, making the devices ideal for power management. The converters are in wettable Flank U-QFN4040- 16/SWP (Type UXB) packages.

Features

  • 3.8V to 60V input voltage range VIN
  • Wide VOUT range from 0.8V to near 100% of VIN
  • 1%  VOUT accuracy
  • VFB adjustable through the SS/TR pin
  • Synchronous rectification >95% efficiency at 12V
    • 120mΩ high-side power MOSFET
    • 55mΩ low-side power MOSFETs
  • Low 43μA quiescent current
  • 300kHz to 2.5MHz switching frequency range
  • Force PWM or PFM Mode through MYSNC
  • Synchronization to external clock
  • Programmable startup control
    • Startup with pre-biased output
    • External soft-start with tracking
    • High voltage enable pin with high precision
  • Protection and diagnosis functions
    • Power Good (PG) detection
    • Thermal shutdown protection
  • Totally lead-free and fully RoHS compliant
  • Halogen- and antimony-free, Green device
  • Suitable for automotive applications requiring specific change control, AEC-Q100 Grade 1 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities
  • U-QFN4040-16/SWP (Type UXB) package, 4.0mm x 4.0mm typical

Applications

  • Automotive infotainment
  • Automotive exterior and interior LED lighting systems
  • Automotive motor controls
  • Automotive and industrial power systems

Specifications

  • 3.8V to 60V operating supply voltage range
  • 3.8V to 15V operating bias voltage range
  • ESD susceptibility
    • ±2000V Human Body Model (HBM)
    • ±1000V Charged Device Model (CDM)
  • -40°C to +125°C operating temperature range
  • Thermal resistance
    • 32°C/W junction-to-ambient
    • 6°C/W junction-to-case
  • +150°C maximum junction temperature
  • +300°C maximum lead temperature

Block Diagram

Block Diagram - Diodes Incorporated AL8890Q/AL88902Q 60V Synchronous Buck Converters
Published: 2024-07-12 | Updated: 2024-09-25