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RT8105GS Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8105GS Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 12 page  1 RT8105 DS8105-03 April 2011 www.richtek.com Features Operating with 5V or 12V Supply Voltage Drives All Low Cost N-MOSFETs Voltage Mode PWM Control 300kHz Fixed Frequency Oscillator Fast Transient Response : High-Speed GM Amplifier Full 0 to 100% Duty Ratio Internal Soft-Start Adaptive Non-Overlapping Gate Driver Over-Current Fault Monitor on MOSFET, No Current Sense Resistor Required Full-Time Over Voltage Protection RoHS Compliant and Halogen Free 5V/12V Synchronous Buck PWM DC/DC Controller General Description The RT8105 is a high efficiency synchronous buck PWM controllers that generate logic-supply voltages in PC based systems. These high performance , single output devices include internal soft-start, frequency compensation networks and integrates all of the control, output adjustment, monitoring and protection functions into a single package. The device operating at fixed 300kHz frequency provides an optimum compromise between efficiency, external component size, and cost. Adjustable over-current protection (OCP) monitors the voltage drop across the RDS(ON) of the lower MOSFET for synchronous buck PWM DC/DC controller. The over- current function cycles the soft-start in 4-times hiccup mode to provide fault protection, and in an always hiccup mode for under-voltage protection. Ordering Information Applications Graphic Card Motherboard, Desktop Servers IA Equipments Telecomm Equipments High Power DC/DC Regulators Pin Configurations (TOP VIEW) SOP-8 PHASE BOOT UGATE LGATE GND VCC OPS FB 2 3 4 5 8 7 6 Note : Richtek 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. Marking Information RT8105 GSYMDNN RT8105GS : Product Number YMDNN : Date Code RT8105GS RT8105ZS : Product Number YMDNN : Date Code RT8105ZS RT8105 ZSYMDNN Package Type S : SOP-8 RT8105 Lead Plating System G : Green (Halogen Free and Pb Free) Z : ECO (Ecological Element with Halogen Free and Pb free) |
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