SM1203数据手册SiliconMitus中文资料规格书

描述 Description

The SM1203 consists of two step-up switching regulator controllers and a low-dropout voltage regulator (LDO). The step-up switching regulator controllers drive external MOSFETs to provide the regulated supply voltages for LED strings of the LCD TV backlight unit. The switching frequency is programmable using an external resistor, and the LDO provides the logic voltage for the system. The device is optimized for thin-film transistor (TFT) liquid-crystal display (LCD) applications.

特性 Features

• 8 V to 15 V Input Supply Voltage Range
• Two Step-up Regulator Controllers
• Peak-Current Mode Control – Fast Transient
• 100 kHz to 1 MHz Adjustable Switching Frequency
• VIN Gate Drive Output (12 V Clamped)
• Phase-shift Operation
• 5 V, 100 mA LDO
• Programmable UVLO and Hysteresis
• Programmable Soft Start
• Boost Switching Enable Function
• Protections
• Step-up Regulator Controllers Overvoltage Protection
• Step-up Regulator Controllers Overcurrent Protection
• Thermal Shut Down Protection

应用 Application

TVs, Monitors