Datasheet LM3432BSQE/NOPB - National Semiconductor Даташит — Даташит
Наименование модели: LM3432BSQE/NOPB
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Производитель: National Semiconductor
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LM3432/LM3432B 6-Channel Current Regulator for LED Backlight Application
May 22, 2008
LM3432/LM3432B 6-Channel Current Regulator for LED Backlight Application
General Description
The LM3432/LM3432B are 6-channel high voltage current regulators which provide a simple solution for LED backlight applications.
These devices incorporate six individual current regulator channels to give accurate driving current for each LED string. The string-to-string tolerance is kept within ±2.0%. Additionally, the Dynamic Headroom Control output can communicate with a LM3430 boost regulator to adjust the LED supply voltage to the lowest level needed to keep the string current in regulation, yielding optimal overall system efficiency. The 6-channel current sink can be adjusted from 15mA to 40mA by an external resistor. Their output drivers can withstand up to 80V. Digital PWM or analog voltage signal can be used to control the duty cycle of all the channels. With a fast current switching slew rate, tr =
Спецификации:
- Topology: Boost (Step Up)
- Количество выходов: 6
- Выходной ток: 240 мА
- Выходное напряжение: 80 В
- Входное напряжение: 6 В ... 40 В
- Dimming Control Type: ШИМ
- Рабочий диапазон температрур: -40°C ... +125°C
- Тип корпуса: LLP
- Влагостойкость: MSL 1 - Unlimited
RoHS: есть
