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HM7502PR Datasheet(PDF) 1 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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HM7502PR Datasheet(HTML) 1 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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1 / 9 page  ©1999~2014 2-channel Constant Current Regulator 1 2-channel Constant Current Regulator INTRODUCTION The HM7502 is a 2-channel LED driver, designed for current regulation. It may be used in various current regulation circuits, especially suitable for LED applications. It lets LEDs work under stable current and avoid brightness unstable caused by current change, while its low voltage can reduce power consumption. The connection of the VDD power pin may also be used for brightness control of LEDs via PWM signals; therefore suitable for applications that need brightness adjustment. The connection of REXT pin can be used for the control of output current, to control and drive more LEDs. When REXT is open, VCH1, VCH2 pins may provide 30mA of current. To achieve operations with VCH1/VCH2 current over 60mA, connect the ICs in parallel. MAIN APPLICATIONS • LED Light Bars, LED Bulbs, LED Fluorescent Lights, LED Backlight FEATURE HIGHLIGHTS • Wide operation supply voltage range: 2.5V ~ 40V • Wide output voltage range: 2.5V~40V • 30mA to 60mA /per channel sink current • Accurate sink current: ± 5% • VDD pin as OE function: up to 100KHz frequency • Negative temperature coefficient: ± 500ppm/ oC • Less than ±0.5%/V load regulation • –40 oC ~+85 oC operation temperature range • High temperature protection: 95 oC ~ 155oC • Pb-free and green package: SOT89-5, SOT23-5 BLOCK DIAGRAM |
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