RT4841
RT4841 is 5A Synchronous Boost Converter manufactured by Richtek.
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 80mΩ power switch and a 80mΩ 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.
Ordering Information
RT4841 Package Type QW : WQFN-20L 4x4 (W-Type) (Exposed Pad-Option 1)
Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are : Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in Sn Pb or Pb-free soldering processes.
Features
- 8.6V to 15.9V Input Supply Voltage
- A Synchronous Boost Converter
- Isolation Switch Controller
- VIN Under Voltage Lockout
- Fixed 500k Hz Switching Frequency
- Over-Temperature Protection
- Cycle by Cycle OCP Protection
- Thin 20-Lead WQFN Package
Applications
- TFT LCD Monitor Panel
- TFT LCD TV Panel
Pin Configuration
(TOP VIEW)
GND EN VL SS P
20 19 18 17 16
GND 1
15 VIN
GND 2 NC 3
SWO 4 SWO 5
PGND
14 BT 13 SW 12 PGND 11 PGND
6 7 8 9 10
FB NC SWG SWI SWI
WQFN-20L 4x4
Marking Information
72= : Product Code
72=YM DNN
YMDNN : Date Code
Copyright ©2021 Richtek Technology Corporation. All rights reserved. DS4841-00 May 2021 is a registered trademark of Richtek Technology Corporation.
.richtek. 1
Typical Application Circuit
VIN...
