Dual Output LCD Bias for Smartphones and Tablets
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.
WSC : WL-CSP-15B 1.31x2.07 (BSC)
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.
2.5V to 5.5V Supply Voltage Range
Up to 90% Efficiency with Small Magnetics
Support Up to 80mA Output Current
Low 1A 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
Adjustable Output Voltage by I2C Compatible
Available in the 15-Ball WL-CSP Package
General Dual Power Supply Applications
Simplified Application Circuit
PGND GND CF2
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS4801H-00 May 2016
is a registered trademark of Richtek Technology Corporation.