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SS6341CSTR Datasheet(PDF) 1 Page - Silicon Standard Corp. |
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SS6341CSTR Datasheet(HTML) 1 Page - Silicon Standard Corp. |
1 / 14 page www.SiliconStandard.com 1 of 14 SS6341 High Performance, Triple-Output, Auto-Tracking Combo Controller n FEATURES l Provides Three Accurately Regulated Output Voltages l Optimized Voltage-Mode PWM Control l Dual N-Channel MOSFET Synchronous Drivers l Fast Transient Response l Adjustable Over-Current Protection Using External MOSFET RDS(ON) - No External Current Sense Resistors Required. l Programmable Soft Start Function l 200KHz Free-Running Oscillator l Robust Output Auto-Tracking Characteristics l Sink and Source Capabilities with External Circuit n APPLICATIONS l Advanced PC motherboards l Information PCs l Servers and Workstations l Internet Appliances l LCD Monitor l PC Add-On Cards l DDR Termination n GENERAL DESCRIPTION The SS6341 combines a synchronous voltage-mode PWM controller with two linear controllers, including the associated monitoring and protection functions. It is able to power CPUs, GPUs, memories, chipsets and multi-voltage applications. The PWM controller regulates the output voltage using a synchronous rectified step-down converter. The built-in N-Channel MOSFET drivers also help to simplify the design of the step-down converter. The PWM controller features over-current protection using the RDS(ON) of the external MOSFET, improving efficiency and cost, as there is no expensive current sense resistor required. Two built-in adjustable linear controllers drive external MOSFETs to form two linear regulators that regulate power for multiple system I/Os. The output voltage of both linear regulators can also be adjusted by means of an external resistor divider. Both linear regulators feature current-limiting. For system I/Os requiring current less than 500mA, the SS6340 is recommended as it saves one external MOSFET. The programmable soft-start design provides a controlled output voltage rise, which limits the current during power-on. A shutdown function is also provided, for disabling the combo controller. Rev.2.01 6/26/2003 |
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