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RT4841 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT4841 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 16 page  RT4841 ® DS4841-00 May 2021 www.richtek.com 1 © Copyright 2021 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Applications TFT LCD Monitor Panel TFT LCD TV Panel Pin Configuration WQFN-20L 4x4 (TOP VIEW) Ordering Information Note : 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. Marking Information 5A Synchronous Boost Converter with Output Isolation MOS General Description The RT4841 is Synchronous Boost Converter with output isolation MOS for active matrix thin film transistor (TFT) liquid crystal displays (LCDs). The Device incorporates current mode, fixed-frequency, pulse width modulation (PWM) circuitry and fully integrated synchronous boost converter with a 80m Ω power switch and a 80m Ω rectifier switch to achieve high efficiency, small size and fast transient response in TFT-LCD applications. Moreover, Device contains one ISO MOSFET controller for power on sequence of step-up converter. The RT4841 has a wide input voltage range from 8.6V to 15.9V and device has 5A (min.) switching current capability. The RT4841 is available in a WQFN-20L 4x4 package. Features 8.6V to 15.9V Input Supply Voltage A Synchronous Boost Converter Isolation Switch Controller VIN Under Voltage Lockout Fixed 500kHz Switching Frequency Over-Temperature Protection Cycle by Cycle OCP Protection Thin 20-Lead WQFN Package RT4841 Package Type QW : WQFN-20L 4x4 (W-Type) (Exposed Pad-Option 1) Lead Plating System G : Green (Halogen Free and Pb Free) 72=YM DNN 72= : Product Code YMDNN : Date Code GND GND NC SWO VIN BT PGND SW SWO PGND 1 2 3 4 67 8 9 15 14 13 12 17 20 18 19 21 PGND 5 11 10 16 |
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