RT4801H Datasheet, PDF (1/22 Pages) Richtek Technology Corporation – Dual Output LCD Bias for Smartphones and Tablets

RT4801H
Dual Output LCD Bias for Smartphones and Tablets
General Description
The RT4801H is a highly integrated Boost and LDO
and inverting charge pump to generate positive and
negative output voltage. The output voltages can be
adjusted from 4V to 6V with 100mV steps by I²C
interface protocols. With its input voltage range of 2.5V
to 5.5V, RT4801H is optimized for products powered by
single-cell batteries and symmetrical output currents up
to 80mA. The RT4801H is available in the WL-CSP-
15B 1.31x2.07 (BSC) package.
Ordering Information
RT4801H
Package Type
WSC : WL-CSP-15B 1.31x2.07 (BSC)
Note :
Richtek products are :
 RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
 Suitable for use in SnPb or Pb-free soldering processes.
Features
 2.5V to 5.5V Supply Voltage Range
 Up to 90% Efficiency with Small Magnetics
 Support Up to 80mA Output Current
 Low 1A Shutdown Current
 Internal Soft-start Function
 Short Circuit Protection Function
 Over-Voltage Protection Function
 Over-Current Protection Function
 Over-Temperature Protection Function
 Elastic Positive and Negative Voltage On/Off
Control by ENP/ENN
 Voltage Output from 4V to 6V per 0.1V
 Low Input Noise and EMI
 Output with Programmable Fast Discharge when
IC Shutdown
 Adjustable Output Voltage by I²C Compatible
Interface
 Available in the 15-Ball WL-CSP Package
Applications
 TFT-LCD Smartphones
 TFT-LCD Tablets
 General Dual Power Supply Applications
Simplified Application Circuit
L1
LXP
V_IN
VIN
RT4801H
VOP
C_IN
ENP
VON
ENN
SCL
BST
SDA
CF1
PGND GND CF2
C_OP
C_ON
C_BST
V_OP
V_ON
C_F1
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS4801H-00 May 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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