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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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RT9212PC bảng dữ liệu(PDF) 1 Page - Richtek Technology Corporation |
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RT9212PC bảng dữ liệu(HTML) 1 Page - Richtek Technology Corporation |
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1 / 14 page  RT9212 Preliminary DS9212-05 March 2007 1 www.richtek.com Dual 5V Synchronous Buck PWM DC-DC and Linear Power Controller Features Operating with Single 5V Supply Voltage Drives All Low Cost N-MOSFETs Voltage Mode PWM Control 300kHz Fixed Frequency Oscillator Fast Transient Response : Full 0% to 100% Duty Ratio Internal Soft-Start Adaptive Non-Overlapping Gate Driver Over-Current Fault Monitor on VCC, No Current Sense Resistor Required RoHS Compliant and 100% Lead (Pb)-Free Applications Graph Card Motherboard, Desktop Servers IA Equipments Telecomm Equipments High Power DC-DC Regulators Pin Configurations Ordering Information General Description The RT9212 is a 3-in-one power controller delivers high efficiency and tight regulation from two voltage regulating synchronous buck PWM DC-DC and one linear power controllers. The RT9212 can control two independent output voltages adjustment in range of 0.8V to 4.0V with 180 degrees channel to channel phase operation to reduce input ripple. In dual power supply application the RT9212 monitors the output voltage of both Channel 1 and Channel 2. An independent PGOOD (power good) signal is asserted for each channel after the soft-start sequence has completed, and the output voltage is within ±15% of the set point. The linear controller drives an external transistor to provide an adjustable output voltage. Built-in over-voltage protection prevents the output from going above 137.5% of the set point by holding the lower MOSFET on and the upper MOSFET off. Adjustable over- current protection (OCP) monitors the voltage drop across the RDS(ON) of the upper MOSFET for each synchronous buck PWM DC-DC controller individually. (TOP VIEW) UGATE1 BOOT1 PHASE1 NC OCSET2/SD OCSET1/SD PVCC1 PGND1 FB1 COMP1 FB2 PGOOD NC LGATE1 FBL NC GNDA VCC DRV PHASE2 BOOT2 PGND2 LGATE2 UGATE2 4 5 6 19 20 21 7 8 9 16 17 18 10 11 12 13 14 15 2 3 22 23 24 TSSOP-24 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. RT9212 Package Type C : TSSOP-24 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) |
Số phần tương tự - RT9212PC |
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Mô tả tương tự - RT9212PC |
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