DESCRIPTION

The UTC UD052015 is a 2A synchronous DC-DC with current

mode, PWM step-down converter. The device integrates a main

switch and a synchronous rectifier for high efficiency.

The 2.5V to 5.5V input voltage range makes the UTC

UD052015 ideal for powering portable equipment. Switching

frequency is internally set at 1.5MHz, allowing the use of small

surface mount inductors and capacitors.

The internal synchronous switch increases efficiency while

eliminates the need for an external Schottky diode. The UTC

UD052015 also includes input under- voltage lockout, output

under-voltage protection, and over-temperature protec

FEATURES

* 2.5V to 5.5V Input Voltage Range

* 2A Available Load Current

* 1.5MHz Switching Frequency in CCM

* Low RDSON for Internal Switches:

High-side: 125mΩ

Low-side: 95mΩ

* Soft Start Time: 1ms

* 65μA Typical Quiescent Current

* Cycle-by-cycle Peak Current Limitation

* Input Over-Voltage Protection

* Input Under-Voltage Lockout

* Output Under-Voltage Lockout

* Short Circuit with Hiccup Mode

* Fast Transient Responses

* Optimized for Low-ESR Ceramic Output Capacitors

* Over-temperature Protection