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XRP6124ESTR0.5-F Datasheet(PDF) 1 Page - Exar Corporation |
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XRP6124ESTR0.5-F Datasheet(HTML) 1 Page - Exar Corporation |
1 / 12 page X XR RP P6 61 12 24 4 N No on n--S Sy yn nc ch hrro on no ou us s P PF FE ET T S Stte ep p--D Do ow wn n C Co on nttrro olllle err January 2011 Rev. 1.1.0 Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 – Fax. +1 510 668-7001 GENERAL DESCRIPTION The XRP6124 is a non synchronous step down (buck) controller for up to 5Amps point of loads. A wide 3V to 30V input voltage range allows for single supply operations from industry standard 3.3V, 5V, 12V and 24V power rails. With a proprietary Constant On-Time (COT) control scheme, the XRP6124 provides extremely fast line and load transient response while the operating frequency remains nearly constant. It requires no loop compensation hence simplifying circuit implementation and reducing overall component count. The XRP76124 also implements an emulated ESR circuitry allowing usage of ceramic output capacitors and insuring stable operations without the use of extra external components. Built-in soft start prevents high inrush currents while under voltage lock-out and output short protections insure safe operations under abnormal operating conditions. The XRP6124 is available in a RoHS compliant, green/halogen free space-saving 5-pin SOT23 package. APPLICATIONS • Point of Load Conversions • Audio-Video Equipments • Industrial and Medical Equipments • Distributed Power Architecture FEATURES • 5A Point-of-Load Capable − Down to 1.2V Output Voltage Conversion • Wide Input Voltage Range − 3V to 18V: XRP6124 − 4.5V to 30V: XRP6124HV • Constant On-Time Operations − Constant Frequency Operations − No External Compensation − Supports Ceramic Output Capacitors • Built-in 2ms Soft Start • Short Circuit Protection • <1µA shutdown current • RoHS Compliant, Green/Halogen Free 5-pin SOT23 Package TYPICAL APPLICATION DIAGRAM Figure 1: XRP6124 Application Diagram |
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