Регуляторы тока светодиодных ламп MAX16819ATT+T

Драйвер светодиода , понижающий, 4.5В - 28В вход, частота коммутации 2МГц, 26В/1A выход, TDFN-6

The MAX16819ATT+T is a 2MHz high brightness LED driver with high-side current sense and 5000:1 dimming in 6 pin TDFN package. It is a step down constant current high brightness LED (HB LED) driver provides a cost effective solution for architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications. It operates from a 4.5V to 28V input voltage range and has 5V/10mA on-board regulator. A high-side current sense resistor adjusts the output current and a dedicated PWM input (DIM) enables a wide range of pulsed dimming. The high-side current sensing and an integrated current setting circuitry minimize the number of external components while delivering an LED current with ±5% accuracy. A hysteretic control algorithm ensures excellent input supply rejection and fast response during load transients and PWM dimming. The MAX16819 features a 30% inductor current ripple. This device operatesup to 2MHz switching frequency thus allowing for small component size.

• Output power is 25W
• Operating temperature range from -40°C to 125°C
• Maximum dimming frequency is 20KHz
• Supply current is 425µA
• Undervoltage lockout hysteresis is 0.50.5

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Управление Питанием, Переносные Устройства, Промышленное Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts