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RT7248 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT7248 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 15 page  RT7248 ® DS7248-01 September 2012 www.richtek.com 1 © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. 2A, 18V, 340kHz Synchronous Step-Down Converter Features ±±±±±1.5% High Accuracy Feedback Voltage Input Voltage Range : 4.5V to 18V 2A Output Current Integrated N-MOSFETs Current Mode Control 340kHz Fixed Frequency Operation Output Adjustable Voltage Range : 0.923V to 15V Efficiency Up to 95% Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Cycle-by Cycle Over Current Protection Input Under Voltage Lockout Output Under Voltage Protection Thermal Shutdown Protection RoHS Compliant and Halogen Free 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 General Description The RT7248 is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 2A output current from a 4.5V to 18V input supply. The RT7248's current mode architecture and external compensation allow the transient response to be optimized over a wide input range and loads. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start up. The RT7248 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 RT7248 is available in SOP-8 (Exposed Pad) package. Marking Information RT7248x GSPYMDNN RT7248xGSP : Product Number x : H or N YMDNN : Date Code Simplified Application Circuit VIN EN GND BOOT FB SW L R1 R2 VOUT VIN RT7248 SS CSS COMP CC RC CP CBOOT CIN COUT Chip Enable |
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