DESCRIPTION

The UTC UD400601 is a synchronous buck converter with

1.2MHz switching frequency, supports an input voltage range of 5V

to 40V, and can provide 600mA continuous load current.

The device achieves high-efficiency operation by integrating low

RDS(ON) power tubes internally, and uses the Power Save Mode to

reduce the switching frequency of the IC under light-load conditions,

thereby improving light-load efficiency.

UTC UD400601 uses the internal soft-start function to prevent

possible overshoot voltage and surge current during the startup

process, and achieves fast response of the loop through the Peak

Current Control Mode. 1.2MHz switching frequency can prevent EMI

noise problems.

The devices feature comprehensive protection features such as

overcurrent limiting, input undervoltage lockout, and overtemperature

shutdown.

UTC UD400601 is packaged in SOT-26 and have a rated

junction temperature range of -40°C to 125°C.

FEATURES

* Input Voltage Range: 5V to 40V

* 600mA Continuous Output Current

* Minimum Switching-On Time: 90ns

* 1.2MHz Switching Frequency

* Integrated 630mΩ/270mΩ Power MOSFETs

* Internal Soft-Start

* Peak Current Mode Control

* Power Save Mode and PWM Mode

* Short Circuit Protection

* Thermal Shutdown

* Green & Pb Free