Micrel has launched the IC "MIC3223" which can drive up to 9 LED clusters in series. An n-channel power MOSFET with an on-resistance of 100mΩ and a leakage current of 3.5A is built in. Mainly for lighting fixtures for interior decoration, industrial lighting fixtures, digital signage equipment, and outdoor lighting fixtures.
The IC is an LED driver IC based on a step-up DC-DC converter circuit with an input voltage range of +4.5 to 20V. Imagine input from a +5V or +12V voltage bus. The output voltage is up to +37V and can be set with an external resistor. The output current can also be set by an external resistor. The output current has a maximum error of ±5%.
IC that can drive up to 9 LED groups in series
IC that can drive up to 9 LED groups in series
The switching frequency of the new product is 1MHz. It is said that more than 90% conversion efficiency can be obtained. Dimming can be achieved by inputting a PWM signal from the outside. Equipped with overvoltage protection, low voltage lockout and overheat protection. The operating temperature range is -40 to +125 °C. It is available in a 16-terminal TSSOP package with dedicated terminals for heat dissipation. The unit price for 1000 batch purchases is $1.46.
300 - 1000 Puffs (included)
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