Product Summary

The ZT1459 is a 1.4MHz fixed frequency PWM non-synchronous step-down regulator. The ZT1459 is operated from 4.5V to 16V, the
generated output is adjustable from 0.81V to 14V, and the output current can be up to 1A with excellent load and line regulation. The applications of the ZT1459 include Distributed power systems, Battery charger, Pre‐regulator for linear regulators.

Parametrics

ZT1459 absolute maximum ratings: (1)Supply Voltage VIN: +20V; (2)Switch VSW: -0.3V to VIN+0.3V; (3)Bootstrap VBS: VSW+6V; (4)All Other Pins: -0.3V to +6V; (5)Junction Temperature: 150℃; (6)Lead Temperature: 260℃; (7)Operating Temperature Range: -40℃ to +85℃; (8)Storage Temperature Range: -65℃ to +150℃.

Features

ZT1459 features: (1)4.5V to 16V input voltage; (2)Output current up to 1A; (3)Output adjustable from 0.81V to 14V; (4)Shutdown current 0.1μA typical; (5)Efficiency up to 90%; (6)1.4MHz fixed frequency; (7)Over current protection; (8)Over temperature protection; (9)RoHS Compliant and 100% Lead (Pb) Free.

Diagrams

ZT1459 block diagram