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Announcement: Introducing HL8545/G: Quad-Channel 50 mΩ High-Side Switch for Advanced Automotive Applications


HL7546 is a synchronous buck converter optimized to supply different sub systems of portable applications. Its input voltage range is 2.5V to 5.5V.

HL7546 can deliver up to 0.8A with high efficiency, while maintaining over 92% efficiency at load currents as low as 1mA. It operates at a high frequency of 1.5MHz, which greatly reduces the value of the external components. A wide range of output capacitors can be used to optimize VOUT stability during load transients. Inductors 2.2μH may be used without affecting loop stability.

The HL7546 is available in a 1.54mm x 0.77mm WLCSP-8 package.

For more detailed description of the device, please download a product brief.


  • 2.6-μA Operating quiescent current
  • Up to 1.5-MHz switching frequency
  • 1% Output voltage accuracy
  • DVS output from 0.5 V to 3.3 V (10/20-mV steps)
  • VSEL-pin to toggle VOUT during operation
  • Power good indication
  • Supports <6-mm² solution size
  • Supports <0.6-mm solution height
  • Tiny 8-pin, 0.35-mm pitch WCSP package
  • Optimized pinout to support 0201 components
  • Comprehensive Protections
    • Input Under-Voltage Lockout (UVLO)
    • Over-Current Protection
    • Short-Circuit Protection
    • Thermal Shut-down

Block Diagram

HL7546 - HMI Main Photo

For more information or a full datasheet request, please contact the factory at

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