RT9224

The RT9224 is a high sped switching controller designed for used in synchronous DC/DC buck converter for modern CPUs. The regulated output voltage is digitally programmable from 1.3V to 3.5V by a 5-bit DAC which provides initial accuracy of ±1%. The RT9224 drives two external N-Channel MOSFETs, providing high efficiency and eliminating the need for high cost P-channel devices.It senses the outtput current across the on-resistance of the upper N-Channel MOSFET and provides an adjustable current limit without external sense resistor.

Features of the RT9224 are:(1)compatible with HIP6004B; (2)simple voltage-mode PWM control with bulk rectification; (3)±1% dac output voltage accuracy; (4)5-bit digital-to-analog output voltage range  from 1.3 V to 3.5V; (5)fast transient response and excellent output voltage regulation; (6)fault protection for over-voltage and over-current; (7)power-good output voltage monitor; (8)fixed 200KHz swikching frequency.

The absolute maximum ratings of the RT9224 can be summarized as:(1)supply voltage:15V;(2)storage temperature range:-65 to +150;(3)boot voltage:15V;(4)input, output or I/O voltage:GND-0.3V to Vcc+0.3V.The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version of the datasheet(s).In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment,medical equipment, and safety equipment), safety should be ensured by using semiconductor devices that feature assured safety or by means of users' fail-safe precautions or other arrangement.In no event shall Sensitron Semiconductor be liable for any damages that may result from an accident or any other cause during operation of the user's units according to the datasheet(s). Sensitron Semiconductor assumes no responsibility for any intellectual property claims or any other problems that may result from applications of information, products or circuits described in the datasheets.