MAX16802AEUA+

MAXIM INTEGRATED PRODUCTS  MAX16802AEUA+  芯片, 发光二极管驱动器

The is an offline and DC to DC PWM controller for high-brightness LED driver in 8 pin µMAX package. The high-brightness HB LED driver-control IC contains all the circuitry required for the design of wide-input-voltage-range LED drivers for general lighting and display applications. The MAX16802 is intended for low-input-voltage 10.8VDC to 24VDC LED drivers. When the LED current needs to be tightly regulated, an additional on-board error amplifier with 1% accurate reference can be utilized. A wide dimming range can be implemented by using low-frequency PWM dimming. It features an input UVLO for programming the input-supply start voltage and to ensure proper operation during brownout conditions. The MAX16802 does not have this internal bootstrap circuit and can be biased directly from a +12V rail. The 262KHz fixed switching frequency is internally trimmed allowing for optimization of the magnetic and filter components, resulting in a compact, cost-effective LED driver.

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Suitable for buck, boost, flyback, SEPIC and other topologies

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Operating temperature range from -40°C to 85°C

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Maximum duty cycle is 50%

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Up to 50W or higher output power

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IN pin directly driven from 10.8VDC to 24VDC input

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PWM or linear dimming

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Thermal shutdown

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Digital soft-start

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Programmable input start-up voltage

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45µA typ start-up supply current, 1.4mA typ operating supply current