Products - Step-Down

XC9291 600mA Synchronous HiSAT-COT Step-Down DC/DC Converter

600mA Synchronous HiSAT-COT Step-Down DC/DC Converter image


Property XC9291
Input Voltage 2.5V ~ 6.0V
Output Voltage 0.7V ~ 3.6V
Output Current 600mA
Oscillation Frequency 4MHz, 6MHz
Quiescent Current 11μA
Packages LGA-6B01, WLP-5-08

Product Description

600mA Synchronous HiSAT-COT Step-Down DC/DC Converter 

Available in a tiny WLP-5-08 chip scale package, measuring just 0.88mm x 0.96mm x 0.33mm (max), the XC9291 series is one of the smallest DC/DC currently available from Torex. The WLP-5-08 has 5 solder bumps, each with a 0.25mm diameter, placed on a 0.5mm pin-pitch. The bump size and configuration is fully compatible with similar products available from other vendors.

HiSAT-COT control ensures ultra-fast load transient response performance whilst maintaining a stable switching frequency.

The XC9291 provide a high efficiency (Typ 90%) and a stable power supply with output currents of up to 600mA achievable using only a coil and two ceramic capacitors connected externally.

Minimum operating voltage is 2.5V and output voltage is fixed within a range of 0.7V to 3.6V in 50mV steps (accuracy: ± 2.0%). Switching frequency is selectable from either 4MHz or 6MHz.

Quiescent current is 11μA and during standby, all circuits are shutdown to reduce current consumption.


  • Input Voltage: 2.5V ~ 6.0V
  • Output Voltage: 0.7V ~ 3.6V
  • Output Current: 600mA
  • Oscillator Frequency: 4MHz, 6MHz
  • Compatible with ceramic capacitors
  • Built-in soft start circuit
  • Built-in current limiter circuit
  • Stand-by Current: 0.6μA (max)
  • WLP-5-08 (0.88 x 0.96 x 0.33mm) Package
  • Only 3 External Components required