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The RT8581 is a boost converter that integrates built-in power transistors, synchronous rectification, and low supply current to provide a compact solution for systems using advanced Li-Ion batteries. The RT8581 is capable of supplying significant energy when the battery voltage falls below the voltage required by system power ICs.The RT8581 is designed to provide a minimum output voltage from a single-cell Li-Ion battery, even when the battery voltage is below the system’s minimum voltage requirement. The RT8581 is available in the WQFN-11L 2.5x2 (FC) package. The recommended junction temperature range spans from -40°C to 125°C, while the ambient temperature range extends from -40°C to 85°C.

Applications

  • RF PA Drivers
  • NAND Flashes
  • Backup Power
  • Motor Drivers
  • Optical Sensor Drivers
  • Portable POS Terminals
Key Spec.
RT8581A
Status Active
Vin (min) (V) 2
Vin (max) (V) 12
Vout (min) (V) 4.5
Vout (max) (V) 12.6
Output Adj. Method Resistor
Iq (typ) (mA) 0.03
SW Current Limit (typ) (A) 10
Freq (typ) (kHz) 1200
Freq (min) (kHz) 1080
Freq (max) (kHz) 1320
Ron (typ) (Ohm) 27
Features Adjustable Current Limit;Cycle-by-Cycle Current Limit;Internal Compensation;OVP
Package Type WQFN2.5x2-11(FC)
Features
  • Input Voltage Range: 2V to 12V
  • Output Voltage Range: 4.5V to 12.6V
  • Up to 94.5% Efficiency at VIN = 5V, VOUT = 12V, and IOUT = 1A
  • Soft-Start-Up Time (< 2msec)
  • Adjustable Peak Current Limit: Up to 10A (Typical)
  • PFM Operation Mode at Light Load
  • Internal Synchronous Rectifier
  • Overvoltage Protection at 13.2V
  • Over-Temperature Protection
  • WQFN-11L 2.5x2 (FC) Package
Datasheet
TitleVersionLast UpdateDownload
RT8581: 10A, Fully Integrated Synchronous Boost ConverterInitial Release2025/01/16
Please confirm with our distributor or sales representative for actual stock status.
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