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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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RT7257G Datenblatt(PDF) 1 Page - Richtek Technology Corporation |
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RT7257G Datenblatt(HTML) 1 Page - Richtek Technology Corporation |
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1 / 15 page  RT7257G ® DS7257G-01 September 2012 www.richtek.com 1 Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. © Applications Wireless AP/Router Set-Top-Box Industrial and Commercial Low Power Systems LCD Monitors and TVs Green Electronics/Appliances Point of Load Regulation of High-Performance DSPs 3A, 18V, 800kHz Synchronous Step-Down Converter General Description The RT7257G is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 18V input supply. The RT7257G's current mode architecture and external compensation allow the transient response to be optimized over a wide input voltage range and loads. Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The RT7257G also provides under voltage protection and thermal shutdown protection. The low current (<3 μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7257G is available in an SOP-8 (Exposed Pad) package. Features ±±±±±1.5% High Accuracy Reference Voltage 4.5V to 18V Input Voltage Range 3A Output Current Integrated N-MOSFET Switches Current Mode Control Fixed Frequency Operation : 800kHz Output Adjustable from 0.8V to 12V Up to 95% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Cycle-by-Cycle Current Limit Input Under Voltage Lockout Output Under Voltage Protection Thermal Shutdown Protection RoHS Compliant and Halogen Free Simplified Application Circuit Marking Information RT7257GxZSP : Product Number x : H or L YMDNN : Date Code RT7257Gx ZSPYMDNN VIN EN GND BOOT FB SW L R1 R2 VOUT VIN RT7257G SS CSS COMP CC RC CBOOT CIN COUT REN |
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Ähnliche Beschreibung - RT7257G |
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