SILICON MITUS

Products

SM12TA

PWM Buck Controller with Fixed-off Time Switching Mode

The SM12TA is a high efficiency buck controller for LED applications which adopts an open loop average mode current control operating in a constant off-time mode, so no external compensation is needed. It features ±2% current accuracy, tight line and load regulation of the LED current. The device can be powered from a 8.5 V to 19 V supply and also features fast PWM dimming response. The Analog Dimming Input (ADIM) can accept a reference voltage of 0 V to 3 V. The SM12TA features over current protection, MOSFET short detection and thermal shutdown.

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