Регуляторы тока светодиодных ламп MAX16822BASA+

Драйвер светодиода , понижающий, 6.5В - 65В вход, частота коммутации 2МГц, 350мА выход, NSOIC-8

The MAX16822BASA+ is a 2MHz, high brightness LED driver with integrated MOSFET and high side current sense in 8 pin NSOIC package. This step down constant current LED driver provides cost effective design solution for interior/exterior, architectural and ambient lighting, heads-up displays, indicator and emergency lighting, LED bulbs and other LED illumination applications. The MAX16822B operates from 6.5V to 65V input voltage range and can provide an output current up to 350mA at 125°C or up to 500mA at +105°C. A high side current sense resistor adjusts output current and dedicated PWM input enables pulsed LED dimming over wide range of brightness levels. The high side current sensing and an integrated current setting circuitry minimize number of external components while delivering an average output current with ±3% accuracy. A hysteretic control method ensures excellent input supply rejection and fast response during load transients and PWM dimming. It allows 30% current ripple.

• Supply current of 350µA
• Automotive temperature range from -40°C to 125°C
• Cost effective solution for wide range of LED lighting applications
• Selectable dimming options (linear or PWM)
• Thermal foldback protection dims LEDs to minimize overheating and thermal shutdown protection
• Minimal component count saves cost and space
• Onboard 65V, 0.85ohm power MOSFET
• Resistor programmable constant LED current
• Integrated high side current sense with 200mV current sense reference
• Hysteretic control, 2MHz switching frequency

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