RT9231

The RT9231 is designed as a 4-in-one power controller optimized for high-performance microprocessor and computer applications. This IC integrates a PWM controller, triple linear controller as well as monitoring and protection functions into a 28-pin SOP package. The PWM controller regulates the microprocessor core voltage with a synchronous buck converter.

RT9231 has many features. (1)4-in-one regulated voltages for microprocessor core, AGP bus, north/south bridge and/or cache memory, GTL bus power. (2)Compatible with HIP6021. (3)Power-good output voltage monitor. (4)5-bit DAC programmable from 1.3V to 3.5V. (5)+/-1% DAC accuracy. (6)Fast transient response. (7)Full 0% to 100% duty cycle driver. (8)Switching frequency from 50kHz to 500kHz. (9)Adaptive non-overlapping gate driver. (10)Over-current monitor uses MOSFET Rds(on). (11)Over-voltage protection uses lower MOSFET. And so on.

Some absolute maximum ratings of RT9231 have been concluded into several points as follow. (1)Its supply voltage would be +15V. (2)Its PGOOD. FAULT/RT and GATE voltage would be from GND-0.3V to Vcc+0.3V. (3)Its input, output or I/O voltage would be from GND-0.3V to 7V. (4)Its ambient temperature range would be from 0°C to 70°C. (5)Its junction temperature range would be from 0°C to 125°C. (6)Its storage temperature range would be from -65°C to 150°C. (7)Its lead temperature soldering 10 seconds would be 300°C. (8)Its thermal impedance junction to ambient would be 75°C/W. (9)Its thermal impedance junction to case would be 25°C/W. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of RT9231 are concluded as follow. (1)Its nominal supply current would be typ 10mA. (2)Its rising Vcc threshold would be min 7.5V and max 9.5V. (3)Its falling Vcc threshold would be min 7V and max 9V. (4)Its rising VAUX threshold would be typ 2.8V. And so on. If you have any question or suggestion or want to konw more information about this IC please contact us for more details. Thank you!