Micrel Distributor

MIC28510YJL Adjustable
Synchronous Buck Regulator

75 V, 4 A Hyper Speed Control™ Synchronous DC/DC Buck Regulator

Micrel's MIC28510YJL Adjustable Synchronous Buck RegulatorThe SuperSwitcher II™ family features Micrel's Hyper Speed Control™, delivering ultra-fast transient response and minimizing output capacitance, while achieving highest power density. The MIC28510 is a wide-input, synchronous switching regulator IC that provides step-down conversion with better than 94 percent peak efficiency. With an input voltage as high as 75 V and a maximum output current of 4 A, the solution eliminates the need for a costly dual-stage conversion approach for point-of-load applications. The MIC28510 delivers up to 100 W of power in a 13cm2 device.

The MIC28510 integrates low-RDSON, high and low-side power switches to provide a highly efficient output down to 0.8 V. The MIC28510 is also Any Capacitor™ stable, independent of output ESR, thus solving the stability problem power supply designers faced with distributed output capacitance.

By combining an exceptionally wide input voltage range, superior stability and transient response with innovative packaging the chip ensures the best power density and thermal performance across the entire load range. The solution delivers unprecedented performance and flexibility, placing the MIC28510 in the sweet spot for designers tackling the industry’s most demanding applications.

  • Hyper Speed Control™ architecture enables:
    • High Delta V Operation (VIN = 75 V and VOUT = 0.8 V)
    • Small output capacitance
  • 4.5 V to 75 V voltage input
  • 4 A output current capability, with up to 95% efficiency
  • Adjustable output down to 0.8 V
  • +1% FB accuracy
  • Any Capacitor™ stable
    • Zero-ESR to high-ESR output capacitors
  • 100 kHz to 500 kHz switching frequency
  • Internal compensation
  • Foldback current-limit and “hiccup” mode short-circuit protection
  • Thermal shutdown
  • Supports safe startup into a pre-biased load
  • -40°C to +125°C junction temperature range
  • 28-pin, 5 mm x 6 mm MLF® package

  • Base stations
  • Power-over-Ethernet
  • Home security systems
  • Solar inverters

Digi-Key P/N Manufacturer P/N Description
576-4337-2-ND MIC28510YJL TR IC REG BUCK SYNC ADJ 4A 28MLF Datasheet
576-4024-ND MIC28510 12V EV BOARD EVAL FOR MIC28510 12V
576-4026-ND MIC28510 5V EV BOARD EVAL FOR MIC28510 5V
Available in Tape & Reel (-2-ND), Cut Tape (-1-ND), and custom Digi-Reel® (-6-ND)