DESCRIPTION

The UTC UD60501 is an asynchronous buck converter that

supports an input voltage range of 4.5V to 60V and delivers 5A

continuous load current. The device has an operating frequency of

100KHz to 2.5MHz and supports setting the switching frequency

through an external clock.

The device achieves high-efficiency operation by integrating a low

RDS(ON) MOS internally, and uses the PSM (power-saving mode) to

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

 thereby improving light-load efficiency.

The device's undervoltage lockout is internally set to 4.3V and

supports customization of the undervoltage lockout threshold through

EN pin.

UTC UD60501 utilizes the internal soft-start function to prevent

possible overshoot voltage and surge current during startup, achieves

fast response of the loop through current control mode, and supports

flexible and simple selection of external compensation components.

The device features comprehensive protection features such as

overcurrent limit, frequency foldback, input undervoltage lockout,

overvoltage protection, and thermal shutdown.

The UTC UD60501 is available in an eSOP8L package and has a

rated junction temperature range of -40°C to 150°C.

 FEATURES

* Input Voltage Range: 4.5V to 60V

* 5A Continuous Output Current

* Integrated 95mΩ Power MOSFET

* 100KHZ to 2.5MHz Fixed Switching Frequency

* Synchronizes to External Clock

* Low Dropout at Light Loads

* Power Save Mode and PWM Mode

* Current Mode Control

* Internal Soft-Start

* Adjustable UVLO Voltage

* Short Circuit Protection

* Thermal Shutdown

* Green & Pb Free