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SP6134 Datasheet(PDF) 1 Page - Exar Corporation |
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SP6134 Datasheet(HTML) 1 Page - Exar Corporation |
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1 / 15 page  S SP P6 61 13 34 4 6 60 00 0k kH Hz z S Sy yn nc ch hrro on no ou us s P PW WM M S Stte ep p D Do ow wn n C Co on nttrro olllle err January 2009 Rev. 2.0.0 GENERAL DESCRIPTION The SP6134 is a 600kHz constant frequency, voltage mode, synchronous PWM step down controller optimized for high efficiency. The SP6134 is adequately suited for split plane applications utilizing a low power 5V rail to power the controller circuitry, minimizing power dissipation. Its wide input voltage range of 3V to 15V allows for conversions from the standard 3.3V, 5V, 9.6V and 12V power rails to an output voltage adjustable down to 0.8V. Developed around a wide bandwidth internal amplifier, the SP6134 can accommodate type II and type III compensation schemes. Protection features include a programmable UVLO, thermal shutdown and output short circuit protection. The SP6134 is part of a larger family of step down controllers operating at various switching frequencies up to 1300kHz and input voltages up to 28V. Refer to Exar’s SP6134H, SP6132, SP6132H, SP6137 and SP6139 for complete details. The SP6134 is available in lead free, RoHS compliant, space saving 10-pin MSOP package. APPLICATIONS • 12V DPA • Communications Systems • Graphics Cards FEATURES • 3V to 15V Step Down Achieved Using Dual Input • On-Board 1.5Ω sink (2Ω source) NFET Drivers • Up to 15A Output Capability • UVLO Detects Both VCC and VIN • Short-Circuit Protection with Auto- Restart • Supports Type II or III Compensation • Programmable Soft Start • Fast Transient Response • High Efficiency: Greater than 94% • Non-synchronous Start-Up • Small 10-Pin MSOP Package • U.S. Patent #6,922,041 TYPICAL APPLICATION DIAGRAM Fig. 1: SP6134 Application Diagram Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 – Fax. +1 510 668-7001 |
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