Micrel Distributor

MIC24053 and MIC24054 Buck Regulators


Micrel's MIC24053 and MIC24054 are 19 V, 9 A high-efficiency buck regulators


Micrel's MIC24053 and MIC24054 Buck RegulatorsThe Micrel MIC24053 and MIC24054 are constant-frequency, synchronous buck regulators featuring unique adaptive on-time control architecture. The MIC24053 and MIC24054 operate over an input supply range of 4.5 V to 19 V and provide a regulated output of up to 9 A of output current. The output voltage is adjustable down to 0.8 V with a guaranteed accuracy of ±1%. The devices operate at a switching frequency of 600 kHz.

Micrel's Hyper Speed Control™ (24053) and HyperLight Load® (24054) architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device. Both parts offer a full suite of protection features to ensure the safety of the IC during fault conditions.

Features Applications
  • 4.5 V to 19 V voltage input
  • Adjustable output from 0.8 V to 5.5 V
  • 600 kHz switching frequency
  • -40°C to +125°C junction temperature range
  • Available in 28-pin, 5 mm x 6 mm QFN package
  • Servers and work stations
  • Routers, switches, and telecom equipment
  • Base stations

Digi-Key P/N Manufacturer P/N Description  
576-4284-1-ND MIC24053YJL TR IC REG BUCK SYNC ADJ 9A 28QFN Datasheet
576-4284-2-ND
576-4284-6-ND
576-4285-1-ND MIC24054YJL TR IC REG BUCK SYNC ADJ 9A 28QFN Datasheet
576-4285-2-ND
576-4285-6-ND