Dual Output LCD Bias for Smartphones and Tablets

RT4801H

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, the 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.

The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.

Applications

TFT-LCD Smartphones
TFT-LCD Tablets
General Dual Power Supply Applications

Key Spec.

	RT4801H
Status	Active
Vin (min) (V)	2.5
Vin (max) (V)	5.5
Number of Channels	2
Number of Buck Converters	0
Number of Boost Converters	1
Number of Negative Outputs	1
Number of LED Drivers	0
Number of LDO Regulators	1
Application	LCD Bias
Features	Enable Input;OCP;OVP;SCP
Package Type	WL-CSP1.31x2.07-15(BSC)

Features

2.5V to 5.5V Supply Voltage Range
Up to 90% Efficiency with Small Magnetics
Support Up to 80mA Output Current
Low 1μA 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

Datasheet

DS4801H-02.pdf

Datasheet

DS4801H-02.pdf

RT4801HWSC

Package Type:WL-CSP1.31x2.07-15(BSC)

Sample Buy

Evaluation Boards

EVB_RT4801HWSC

Buy