조절가능 정전류 LED PWM 드라이버 모듈
(Adjustable Constant Current LED PWM Driver Module)
개요
- 본 제품은 조절가능 정전류 LED PWM 드라이버 모듈입니다.
- 2.8V-6V의 전압을 입력 받아 최대 1.5A의 전류를 출력하게 설정할 수 있습니다.
- 가변저항이나 PWM 신호를 통해 전류조절이 가능합니다.
특징
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1. This product is a current regulation integrated circuit operating from an input voltage of 2.8V to 6V, the constant output current can be set up to 1.5A with an external resistor.
2. It consists of high precision reference voltage, amplifier, current mirror, etc. The on-chip power transistor and current sense block greatly reduce the external component count, which makes this product for LED driver.
3. When the CE pin is high, the input voltage is greater than 2.8V, and is larger than the LED forward voltage plus the required voltage drop, it functions normally to deliver constant current from the LED pin.
4. Adopts the temperature regulation instead of temperature protection function, the temperature regulation can make the LED being turned on continuously in case of high ambient temperature or high voltage drop. When the junction temperature reaches about 135 °C, the internal temperature regulation block reduces the LED current so that the junction temperature will not rise any more. This feature allows the users to maximize the use of the power handling capability of the chip, do not worry about the chip overheating and damage to the chip or external components.
5. With e chip enable function, which can shutdown the whole chip to limit the current consumption within 1uA.
6. Adopts the over current protection block. When LED current approaches 1.9A(Typical), the over current protection block begins to function to prevent the LED current from increasing further.
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Working voltage : DC 2.8-6V(Perfect for 3V 3.3V 3.7V 4.5V 5V 6V LED Driver)
Output current: 30-1500mA
Maximum output power: 9W
Can drive 1-16pcs 2.8-6V LEDs (maximum current does not exceed 1.5A)
Current regulation: 1 through adjustable resistance; 2 through PWM signal control
Weight: 0.56g
문서
연관제품
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