Datasheet > SCT2302

SCT2302

更新时间： 2024-02-11 06:56:01

品牌	Logo	应用领域
其他 - ETC		驱动
页数	文件大小	规格书
15页	392K
描述
2-channel high constant driver with supply

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SCT2302 数据手册

StarChips

Technology

SCT2302 V01_01; Jul/12

2-Channel High Constant Driver with Supply Regulation Feedback

Product Description

The SCT2302 is a patented logical feedback for automatic supply regulation to minimize the system

power consumption. The SCT2302 is a two channels constant current driver for LED lighting. It provides

the PWM dimming by sinking constant current from LED clusters with minimum pulse width 20us. The

dimming control is performed by connecting the PWM signal from system control unit to OE pin. The full

scale current value of each output is set by an external resistor connected to REXT pin. The SCT2302

guarantees to endure maximum DC 24V at each output port. Each output of SCT2302 can sink a

constant current up to 480mA. Users can simply shunt the outputs to get higher current driverꢀability in

lighting high power LED.

The excellent current regulation capability allows SCT2302 easily drive each output current to a constant

stable output nearly without affected by power supply of LED, loading due to variant V_Fof LEDs and

operating temperature. The SCT2302 is equipped with over temperature protection. The two channels

IC stops driving the output while junction temperature exceeds 180°C the high limit and the output will

be reactivated while the junction temperature is below 110°C the low limit. In conclusion, the driver

system is protected from damage of overheated. Furthermore, with feedback input function, the

SCT2302 can be operated with cascaded operation for multiple LED drivers system.

Features

Patented logical feedback for automatic supply regulation

Cascaded operation for multiple LED drivers is supported

Powerꢀon open detection to bypass unconnected or broken LED strings

2 constant current sinkers with output voltage sustainable to 24V

Excellent regulation to load, supply voltage and temperature

Temperature regulation: ±0.01%/°C, load regulation: ±0.1%/V, line regulation: ±0.5%/V

High current matching accuracy: ±1% between outputs, ±2% between ICs

Constant output current : 120 – 360/480mA@3.3/5V

Low dropout voltage 0.5V@240mA, V_DD=5V

Output current is set by a single external resistor

CMOS Schmitt trigger inputs

Builtꢀin thermal protection function to prevent damage from over current operation

Package: SOP8 with thermal pad

Applications: LED backlight global dimming control, LED lighting, LED lamp

12 3 4 5 6 7...15

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