ADD8733中文资料Integrated TFT Panel Power Supply with Gate Modulation and VCOM数据手册ADI规格书

描述 Description

The ADD8733 is a 4-channel regulator with two VCOM amplifiers and gate pulse modulation (GPM) that provides all the necessary voltages for thin film transistor (TFT) liquid crystal displays (LCD). Included is a step-up regulator, a step-down regulator for digital logic, two VCOM amplifiers, two charge-pump regulators for VGH and VGL, and an integrated gate pulse modulator.

By offering a complete power integration solution optimized for TFT LCD TVs and monitors, the ADD8733 helps to lower cost, simplify board design, and increase performance over existing solutions.The ADD8733 is offered in a 48-lead RoHS compliant LFCSP and is specified over the industrial temperature range of −40°C to +85°C.Applications

• TFT LCD panels for TVs and monitors

特性 Features

• Step-up switching regulator with 3 A switch current limit
8 V to 16.5 V input voltage range
Adjustable output voltage up to 20 V
1.2 A series switch for power sequencing
Overvoltage protection (OVP)

• Step-down switching regulator with 3 A switch current limit
8 V to 16.5 V input voltage range
Adjustable output voltage down to 2.5 V

• Gate pulse modulator circuitry
Independently adjustable delay and falling slope



• Positive charge-pump regulator for VGH

• Negative charge-pump regulator for VGL

• Two VCOM amplifiers

• General
Power supply sequencing
Thermal fault protection
650 kHz or 1.2 MHz PWM frequency
Soft start
Undervoltage lockout (UVLO)
48-lead RoHS compliant LFCSP