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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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SP7655ERL/TR Arkusz danych(PDF) 1 Page - Sipex Corporation |
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SP7655ERL/TR Arkusz danych(HTML) 1 Page - Sipex Corporation |
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1 / 16 page  Rev E: 3/2/07 SP7655 Wide Input Voltage Range 8A, 300kHz, Buck Regulator © 2007 Sipex Corporation SP7655 FEATURES ■ 2.5V to 28V Step Down Achieved Using Dual Input ■ Output Voltage down to 0.8V ■ 8A Output Capability ■ Built in Low RDSON Power Switches (15m typ) ■ Highly Integrated Design, Minimal Components ■ 300 kHz Fixed Frequency Operation ■ UVLO Detects Both VCC and V IN ■ Over Temperature Protection ■ Short Circuit Protection with Auto-Restart ■ Wide BW Amp Allows Type II or III Compensation ■ Programmable Soft Start ■ Fast Transient Response ■ High Efficiency: Greater than 95%Possible ■ Non- synchronous Start-Up into a Pre-Charged Output ■ Lead Free, RoHS Compliant Package: Small 7mm x 4mm DFN ■ U.S. Patent #6,922,041 Wide Input Voltage Range, 8Amp 300kHz, Buck Regulator The SP7655 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed to be especially attractive for dual supply, 12V or 24V distributed power systems stepped down with 5V used to power the controller. This lower VCCvoltage minimizes power dissipation in the part and is used to drive the top switch. The SP7655 is designed to provide a fully integrated buck regulator solution using a fixed 300kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and output short circuit protection. The SP7655 is available in the space saving DFN package . TYPICAL APPLICATION CIRCUIT DESCRIPTION Power Blox TM 16V CBST 6,800pF L1 2.2uH, Irate=8A C1 22uF CVCC 2.2uF U1 SP7655 PGND 1 PGND 2 PGND 3 GND 4 VFB 5 COMP 6 UVIN 7 GND 8 SS 9 VIN 10 VIN 11 VIN 12 VIN 13 LX 14 LX 15 LX 16 NC 17 BST 18 GND 19 GND 20 GND 21 VCC 22 LX 23 LX 24 LX 25 LX 26 DBST CSS 47nF CP1 22pF 3.30V 0-8A RSET 21.5k ,1% GND C3 47uF C4 22uF Notes: 12V VIN SD101AWS have three contacts isolated from one another: Vin, SWNODE, and GND. RZ3 7.15k 1% VOUT CZ3 150pF CZ2 1,000pF R1 68.1k ,1% RZ2 15k ,1% CF1 100pF fs=300Khz ENABLE +5V VCC 2. RSET=54.48/(Vout-0.8V) KOhms (note 2) 6.3V 1. U1 Bottom side layout should 16V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 TOP VIEW Heatsink Pad 1 Connect to Lx Heatsink Pad 2 Connect to GND Heatsink Pad 3 Connect toVIN PGND PGND GND VFB COMP UVIN GND SS VIN LX LX LX LX VCC GND GND GND BST NC LX LX LX DFN PACKAGE 7mm x 4mm SP7655 PGND VIN VIN VIN |
Podobny numer części - SP7655ERL/TR |
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Podobny opis - SP7655ERL/TR |
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