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ZLED7000 数据表(PDF) 1 Page - Renesas Technology Corp |
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ZLED7000 数据表(HTML) 1 Page - Renesas Technology Corp |
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1 / 19 page  40V LED Driver with Internal Switch ZLED7000 Datasheet © 2016 Integrated Device Technology, Inc. 1 April 20, 2016 VIN ADJ GND ISENSE LX ZLED7000 VS n LED L1 C1 1 μF RS D1 47 μH 6 to 40 VDC 5 4 1 2 3 Brief Description The ZLED7000, one of our ZLED Family of LED control ICs, is an inductive step-down converter that is optimal for driving a single LED or multiple LEDs (connected in series) from a voltage source greater than the voltage rating of the LED. The ZLED7000 operates in continu- ous mode. Capable of operating efficiently with voltage supplies ranging from 6 VDC to 40 VDC, it is ideal for low-voltage lighting applications. The ZLED7000 minimizes current consumption by remaining in a low- current standby mode (output is off) until a voltage of ≥0.3V is applied to the ADJ pin. In operating mode, the ZLED7000 can source LEDs with an output current of ≤ 750mA (≤ 30 watts of output power) that is externally adjustable.* The ZLED7000’s integrated output switch and high-side current sensing circuit use an external resistor to adjust the average output current. Linearity is achieved via an external control signal at the ZLED7000’s ADJ pin, implemented either as a pulse-width modulation (PWM) waveform for a gated output current or a DC voltage for a continuous current. ZLED7000 Application Circuit * See section 2.3 and 1.4 for details Features • Capable of up to 95% efficiency* • Operates in continuous mode with a wide input range from 6 VDC to 40 VDC • Integrated 40V power switch • One pin on/off or brightness control via PWM or DC voltage control signal input • Switching frequency: ≤ 1MHz • Dimming rate: 1200:1 (typical) • Output current accuracy: 5% (typical) • Built-in thermal shutdown and open-circuit protection for LED • Very few external components needed for operation • Broad range of applications: outputs up to ≤750mA • SOT89-5 package Application Examples • Illuminated LED signs and other displays • LED traffic and street lighting (low-voltage) • Architectural LED lighting, including low-voltage applications for buildings • Halogen replacement LEDs (low-voltage) • LED backlighting • General purpose exterior and interior LED lighting, including applications requiring low-voltage • General purpose low-voltage industrial applications |
类似零件编号 - ZLED7000 |
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类似说明 - ZLED7000 |
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