Products - Step-Down

XCL237 1.5A Step-Down Micro DC/DC with Integrated Inductor

1.5A Step-Down Micro DC/DC with Integrated Inductor image


Property XCL237
Output Current 1.5A
Input Voltage 2.5 ~ 5.5V
Output Voltage 0.8 ~ 3.6V
Oscillation Frequency 3MHz
Quiescent Current 600µA
Packages USP-9B01

Product Description

1.5A HiSAT-COT Synchronous Step-Down Micro DC/DC Converter

  • XCL237 PWM only
  • XCL238 PWM/PFM (Auto Switching)

The XCL237/238 series is a high speed transient response 1.5A synchronous step-down Micro DC/DC converter with integrated inductor which fits in an extremely small 3.2mm x 2.5mm x 1.0mm USP-9B01 package.

The extremely fast load transient performance is as a result of a new HiSAT-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 2.5V to 5.5V and the output voltage range is 0.8V to 3.6V (accuracy ±2.0%). Switching frequency is 3.0MHz and the operating ambient temperature range is -40°C ~ 105°C.

With the built-in UVLO function, the driver transistor is forced OFF when the input voltage becomes 1.95V or lower.


  • Input Voltage: 2.5V ~ 5.5V
  • Output Voltage: 0.8V ~ 3.6V
  • Output Current: 1.5A
  • Oscillator Frequency: 3MHz
  • HiSAT-COT Control
  • Built-in soft start circuit
  • USP-9B01 Package

XCL213 Internal Construction