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RT2856GQW Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT2856GQW Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 19 page  RT2856 ® DS2856-10 October 2016 www.richtek.com 1 © Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Design Tools Sample & Buy Applications High Performance Point of Load Regulation Notebook Computers High Density and Distributed Power Systems General Description The RT2856 is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 6A output current from a 4.5V to 18V input supply. The RT2856 current-mode architecture with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start- up. Fault condition protections include output under-voltage protection, output over-voltage protection, and over- temperature protection. The low current shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. 6A, 18V, Synchronous Step-Down Converter Features Low RDS(ON) Power MOSFET Switches 26m Ω Ω Ω Ω Ω/19mΩ Ω Ω Ω Ω Input Voltage Range : 4.5V to 18V Adjustable Switching Frequency : 200kHz to 1.6MHz Current-Mode Control Synchronous to External Clock : 200kHz to 1.6MHz Accurate Voltage Reference 0.8V ±±±±± 1%, Over −−−−−40°°°°°C to 85 °°°°°C Monotonic Start-Up into Pre-biased Outputs Adjustable Soft-Start Power Good Indicator Under-Voltage and Over-Voltage Protection Input Under-Voltage Lockout RoHS Compliant and Halogen Free Marking Information Simplified Application Circuit 00= : Product Code YMDNN : Date Code 00=YM DNN VIN RT2856 VIN PVIN BOOT FB COUT VOUT CIN R1 R2 PGOOD COMP RT/SYNC L EN PGOOD SS/TR CSS ROSC CBOOT LX GND RCOMP1 CCOMP1 Enable CCOMP2 |
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