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RT8805C Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8805C Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 18 page  RT8805C Preliminary 1 DS8805C-03 August 2007 www.richtek.com Features 12V Power Supply Voltage 2 Phase Power Conversion Embedded 12V Boot Strapped Driver Precise Core Voltage Regulation Low Side MOSFET RDS(ON) Current Sensing for Power Stage Current Balance External Compensation Adjustable Soft-Start Adjustable Frequency and Typical at 300kHz Per Phase Power Good Indication Adjustable Over Current Protection External Reference Voltage Tracking (RT8805CxQVA) Small 16-Lead and 24-Lead VQFN Packages RoHS Compliant and 100% Lead (Pb)-Free Applications Middle-High End GPU Core Power High End Desktop PC Memory Core Power Low Output Voltage, High Power Density DC-DC Converters Voltage Regulator Modules Two Phase General Purpose PWM Controller Ordering Information General Description The RT8805C is the most compact dual-phase synchronous buck controller in the industry specifically designed for high power density applications. This part is capable of delivering up to 60A output current due to its embedded bootstrapped drivers that support 12V + 12V driving capability. The phase currents are sensed by innovative time sharing RDS(ON) current sensing technique for current balance and over current balance. Using one common GM amplifier to sense two phase currents eliminates offset and nonlinearity of the GM amplifier and yields good current balance. Other features include adjustable operation frequency from 50kHz to 1MHz, adjustable soft-start, PGOOD, external compensation, enable/shutdown for various application and performance consideration. The RT8805C comes to a tiny footprint package of VQFN-16L 3x3 and VQFN-24L 4x4 packages. 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. Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area, otherwise visit our website for detail. Package Type QV : VQFN-16L 3x3 (V-Type) QVA : VQFN-24L 4x4 (V-Type) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) RT8805C |
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