Products - Step-Down

XC9261 1.5A Synchronous Step-Down Hi-SAT COT DC/DC Converter

1.5A Synchronous Step-Down Hi-SAT COT DC/DC Converter image


Property XC9261
Output Current 1.5A
Input Voltage 2.7 ~ 5.5V
Output Voltage 0.8 ~ 3.6V
Oscillation Frequency 1.2MHz, 3MHz
Quiescent Current 15µA
Packages SOT-89-5, USP-6C

Product Description

1.5A Synchronous Step-Down Hi-SAT COT DC/DC Converter

  • XC9260 PWM only
  • XC9261 PWM/PFM (Auto Switching)

The XC9260/XC9261 series is a high speed transient response 1.5A synchronous step-down DC/DC converter. The extremely fast load transient performance is as a result of a new Hi-SAT COT (Constant On Time) control method, which, when compared to standard COT control, provides less fluctuation in oscillation frequency against load and input voltage.

The input voltage range is 2.7V to 5.5V and the output voltage range is 0.8V to 3.6V (accuracy ±2.0%). Current consumption is only 15μA (fOSC=1.2MHz) with the XC9261 ! 1.2MHz or 3.0MHz can be selected for the oscillation frequency and the operating ambient temperature range is -40°C ~ 105°C.

The soft-start time is set to 0.3ms (TYP.). With the built-in UVLO function, the driver transistor is forced OFF when the input voltage becomes 2.0V or lower.


  • Input Voltage: 2.7V ~ 5.5V
  • Output Voltage: 0.8V ~ 3.6V
  • Output Current: 1.5A
  • Oscillator Frequency: 1.2MHz, 3MHz
  • Current Consumption: 15uA (1.2MHz)
  • Hi-SAT COT Control
  • Compatible with ceramic capacitors
  • Built-in soft start circuit
  • SOT-89-5 and USP-6C Packages

Need more Integration ?

For additional space saving take a look at the XCL214 Micro DC/DC with integrated inductor! The XCL214 is available in a small USP-9B01 package measuring 2.5mm x 3.2mm x 1.0mm. Needs only two external capacitors!

XC9261 Typical Application Circuit

XC9261 Oscillation Frequency vs Output Current