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RT9603GS Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9603GS Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 10 page  RT9603 1 DS9603-08 March 2007 www.richtek.com Features Drives Two N-MOSFETs Adaptive Shoot-Through Protection Supports High Switching Frequency Fast Output Rise Time Propagation Delay 40ns Tri-State Input for Bridge Shutdown Supply Over-Voltage Protection above Maximum Voltage Rating Supply Under-Voltage Protection Upper MOSFET Direct Shorted Protection Small SOP-8 Package RoHS Compliant and 100% Lead (Pb)-Free Applications Core Voltage Supplies for Intel Pentium® 4, AMD® AthlonTM Microprocessors High Frequency Low Profile DC-DC Converters High Current Low Voltage DC-DC Converters IA Equipments Synchronous-Rectified Buck MOSFET Drivers General Description The RT9603 is a high frequency, dual MOSFET drivers specifically designed to drive two power N-MOSFETs in a synchronous-rectified buck converter topology. The device combined with the RT924x series of multi-phase PWM controllers and MOSFETs form a complete core voltage regulator solution for advanced microprocessors. The output drivers in the RT9603 can efficiently switch power MOSFETs at frequencies up to 500kHz. It shall be taken into account the thermal consideration when the switching frequency above 500kHz. Each driver is capable of driving a 3nF load in 30/40ns rise/fall time with fast propagation delay from input transition to the gate of the power MOSFET. The device implements boot-strapping on the upper gate with only an external capacitor and a diode required. This reduces implementation complexity and allows the use of higher performance, cost effective N- MOSFETs. Both drivers incorporate adaptive shoot-through protect- ion to prevent upper and lower MOSFETs from conduct- ing simultaneously and shorting the input supply. An unique feature of the RT9603 driver is the addition of over-voltage protection in the event of upper MOSFET direct shorted before power-on. The RT9603 detects the fault condition during initial start-up, the internal power- on OVP sense circuitry will rapidly drive the output lower MOSFET on before the multi-phase PWM controller takes control. As a result, the input supply will latch into the shutdown state, thereby prevent the processor from damaged. Pin Configurations (TOP VIEW) SOP-8 Ordering Information 2 3 4 5 8 7 6 BST VCC NC VIN DRVH DRVL PGND SW Note : RichTek Pb-free and Green products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 100%matte tin (Sn) plating. RT9603 Package Type S : SOP-8 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) |
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