RT7298BLGQW Richtek

RT7298B 6A, 18V, Synchronous Step-Down Converter General Description Features Low R Power MOSFET Switches 26m/19m DS(ON) The RT7298B is a high efficiency, monolithic synchronous Input Voltage Range : 4.5V to 18V step-down DC/DC converter that can deliver up to 6A output Adjustable Switching Frequency : 200kHz to 1.6MHz current from a 4.5V to 18V input supply. The RT7298B Current-Mode Control current-mode architecture with external compensation Synchronous to External Clock : 200kHz to 1.6MHz allows the transient response to be optimized over a wide Accurate Voltage Reference 0.6V 1.25% range of loads and output capacitors. Cycle-by-cycle Monotonic Start-Up into Pre-biased Outputs current limit provides protection against shorted outputs Adjustable Soft-Start and soft-start eliminates input current surge during start- Power Good Indicator up. Fault condition protections include output under-voltage Selectable Hiccup Mode and Latch-Off Mode protection, output over-voltage protection, and over- Under-Voltage Protection temperature protection. The low current shutdown mode Over-Temperature and Over-Voltage Protection provides output disconnection, enabling easy power Input Under-Voltage Lockout management in battery-powered systems. RoHS Compliant and Halogen Free Applications High Performance Point of Load Regulation Notebook Computers High Density and Distributed Power Systems Simplified Application Circuit RT7298B BOOT V VIN IN C IN C BOOT L PVIN LX V OUT R1 Enable EN FB C PGOOD OUT PGOOD R COMP1 R OSC COMP R2 RT/SYNC C C COMP1 COMP2 C SS SS/TR GND Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS7298B-00 December 2013 www.richtek.com 1RT7298B Ordering Information Marking Information RT7298BHGQW RT7298B 09= : Product Code Package Type YMDNN : Date Code QW : WQFN-14AL 3.5x3.5 (W-Type) 09=YM DNN Lead Plating System G : Green (Halogen Free and Pb Free) UVP Trim Option RT7298BLGQW H : Hiccup 08= : Product Code L : Latch-Off YMDNN : Date Code Note : 08=YM DNN Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Pin Configurations (TOP VIEW) 1 14 GND 2 13 BOOT GND 3 12 LX 4 11 PVIN GND LX PVIN 5 10 EN 15 6 9 VIN SS/TR 7 8 WQFN-14AL 3.5x3.5 Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS7298B-00 December 2013 2 FB RT/SYNC COMP PGOOD