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SP6134

Sipex
Part Number SP6134
Manufacturer Sipex
Description Dual Supply Synchronous Buck Controller
Published Jun 7, 2005
Detailed Description ® SP6134 Dual Supply Synchronous Buck Controller FEATURES ■ 3V to 15V Step Down Achieved Using Dual Input ■ Small 10-...
Datasheet PDF File SP6134 PDF File

SP6134
SP6134

Overview
® SP6134 Dual Supply Synchronous Buck Controller FEATURES ■ 3V to 15V Step Down Achieved Using Dual Input ■ Small 10-Pin MSOP Package ■ 2A to 15A Ouput Capability ■ Highly Integrated Design, Minimal Components ■ UVLO Detects Both VCC and VIN ■ Short Circuit Protection with Auto-Restart ■ On-Board 1.
5Ω sink (2Ω source) NFET Drivers ■ Programmable Soft Start ■ Fast Transient Response ■ High Efficiency: Greater than 94% Possible ■ Asynchronous Start-Up into a Pre-Charged Output ■ U.
S.
Patent #6,922,041 VCC 1 GL 2 GND 3 VFB 4 COMP 5 SP6134 10 Pin MSOP 10 BST 9 GH 8 SWN 7 SS 6 UVIN Now Available in Lead Free Packaging APPLICATIONS ■ 12V DPA ■ Communications Systems ■ Graphics Cards DESCRIPTION The SP6134 is a synchronous step-down switching regulator controller optimized for high efficiency.
The part is designed to be especially attractive for dual supply, 12V step down with 5V used to power the controller.
This lower VCC voltage minimizes power dissipation in the part.
The SP6134 is designed to drive a pair of external NFETs using a fixed 600kHz frequency, PWM voltage mode architecture.
Protection features include UVLO, thermal shutdown and output short circuit protection.
The SP6134 is available in the cost and space saving 10-pin MSOP.
TYPICAL APPLICATION CIRCUIT VCC = 5V @ 30mA RLF 3.
0,5% R3 221k, 1% UVIN R4 100k, 1% DBST MBR0530 CVCC 10µF 6.
3V GND 3 0.
8V CVCC Ceramic 8050 X5R CF1 100pF U1 1 VCC BST 10 2 SP6134 GL GH 9 3 GND SWN 8 4 VFB SS 7 5 COMP UVIN 6 CZ2 RZ2 820pF 40.
2k, 1% CP1 56pF fs=600Khz 8765 QT FDS6676S 4 14.
5A, 6mΩ 123 CBST 1µF R5 Bead 8765 QB 4 SS 123 FDS6676S CSS 14.
5A, 6.
0mΩ 47nF VOUT=(R1/R2 +1)VFB C1 22µF 16V C2 22µF 16V C1, C2 Ceramic 1210 X5R VIN 3.
5V - 15V GND C3 47µF 6.
3V C4 47µF 6.
3V RZ3 4.
64k, 1% CZ3 220pF VOUT≤VIN 0.
8V - 3.
3V 0 - 10 A R1 68.
1k, 1% GND2 C3, C4 Ceramic 1210 X5R R2 21.
5k, 1% Date: 2/16/06 SP6134 Dual Supply, Synchronous Buck Controller 1 © Copyright 2006 Sipex Corporat...


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