Products - Step-Down

XD9261 1.5A Synchronous Step-Down Hi-SAT COT DC/DC Converter

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


Property XD9261
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 USP-6C

Product Description

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

  • XD9260 PWM only
  • XD9261 PWM/PFM (Auto Switching)

The XD9260/XD9261 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 XD9261 ! 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
  • USP-6C Packages

XD9261 Typical Application Circuit

XD9261 Ocvillation Frequency vs Output Current Graph