Part Number: SM4109
Function: Screen LCD chip IC
Package: QFN 72 Pin
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Description
The SM4109 consists of four internal-switch regulators (main boost converter, 3.3VDD buck converter, HAVDD buck converter and 1.2VDD buck converter), two external switch regulators (VON boost converter and VOFF buck-boost converter), a negative linear regulator and a high voltage level shifting scan driver.
The main boost converter and the synchronous buck converter provide the regulated supply voltage for the panel source driver ICs. The 3.3VDD buck converter provides the supply voltage for I/O interface of the T-CON and other logic circuits.
Features
1. 8.7V to 14.5V Input Supply Voltage Range
2. 750kHz Switching Frequency
3 High-Efficiency Step-up Regulator
(1) Peak-current Mode Control
(2) Built-In 24V, 3.5A, 0.15Ω MOSFET
4. High-Voltage Step-down Regulator for Logic (3.3V)
(1) Peak-current Mode Control
(2) Built-In 20V, 2A, 0.25Ω MOSFET
Applications:
1. LCD TV and Monitor Panels
SM4109 Datasheet PDF
