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SP7653 Datasheet(PDF) 1 Page - Sipex Corporation |
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SP7653 Datasheet(HTML) 1 Page - Sipex Corporation |
1 / 15 page Date: /20/06 SP7653 Wide Input Voltage Range, .3MHz, Buck Regulator © Copyright 2006 Sipex Corporation 1 Date: 2/17/06 SP7653 Wide Input Voltage Range, 1.3MHz, Buck Regulator © Copyright 2006 Sipex Corporation SP7653 FEATURES ■ 2.5V to 20V Step Down Achieved Using Dual Input ■ Output Voltage down to 0.8V ■ 3A Output Capability ■ Built in Low RDSON Power Switches (40 m typical) ■ Highly Integrated Design, Minimal Components ■ 1.3MHz Fixed Frequency Operation ■ UVLO Detects Both VCC and VIN ■ 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 ■ Asynchronous Start-Up into a Pre-Charged Output ■ Small 7mm x 4mm DFN Package ■ U.S. Patent #6,922,041 Wide Input Voltage Range, 1.3MHz, Buck Regulator The SP7653 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed to be especially attractive for dual supply, 12V to 20V distributed power systems stepped down with 5V used to power the controller.ThislowerVCCvoltageminimizespowerdissipationinthepartandisusedtodrivethetopswitch.TheSP7653 is designed to provide a fully integrated buck regulator solution using a fixed 1.3MHz frequency, PWM voltage mode architecture. Protection features include Under Voltage Lock Out (UVLO), thermal shutdown and output short circuit protection. The SP7653 is available in the space saving DFN package . TYPICAL APPLICATION CIRCUIT Now Available in Lead Free Packaging DESCRIPTION Power Blox TM 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 BOTTOM VIEW Heatsink Pad 1 Connect to Lx Heatsink pad 2 Connect to GND Heatsink pad 3 Connect to VIN 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 SP7653 PGND VIN VIN VIN CBST 1uF R3 200k ,1% L1 IHLP2525CZER2R2M01 2.2uH, Irate=8A U2 SPX5205 VIN 1 GND 2 EN 3 BYP 4 VOUT 5 C1 22uF CVCC 2.2uF U1 SP7653 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 22nF CP1 3.3pF 3.30V 0-3A 16V R2 21.5k ,1% GND C3 47uF ALL RESISTORS & CAPACITORS ARE SIZE 0603 UNLESS OTHERWISE SPECIFIED. C3: CERAMIC X5R C5 22uF Notes: 6.3V 12V DCR=18m VIN SD101AWS U1 Bottom-Side Layout should have three Contacts which are isolated from one another: QT- Drain Contact, QB-Drain Contact and Controller-GND Contact. RZ3 158 ,1% VOUT GND2 R4 100k ,1% C2 0.1uF C1,C5: CERAMIC X5R 16V CZ3 820pF CZ2 1.5nF R1 68.1k ,1% RZ2 38.3k , 1% CF1 100pF Fs=1.3MHz RBST 5.11 , 1% 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 BOTTOM VIEW Heatsink Pad 1 Connect to Lx Heatsink Pad 2 Connect to GND Heatsink Pad 3 Connect to VIN PGND PGND GND VFB COMP NC LX LX LX LX VCC BST LX LX LX DFN PACKAGE 7mm x 4mm SP7653 PGND SS GND GND GND UVIN VIN VIN VIN VIN GND |
Similar Part No. - SP7653_06 |
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Similar Description - SP7653_06 |
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