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MP2489DQ Datasheet(PDF) 3 Page - Monolithic Power Systems |
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MP2489DQ Datasheet(HTML) 3 Page - Monolithic Power Systems |
3 / 13 page MP2489 – STEP DOWN WLED DRIVER WITH WIDE 6V–60V INPUT VOLTAGE MP2489 Rev. 1.23 www.MonolithicPower.com 3 10/11/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS VIN = 24V, TA = +25°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Input Voltage VIN 6 60 V Shutdown Supply Current ISD 108 µA Quiescent Supply Current IQ No Switching 1 mA Internal Reference Voltage IREF 1.275 V Feedback Reference Voltage (with respect to VIN) VIN-VRS VEN/DIM = 1.28V 192 202 212 mV Feedback Reference Voltage Hysterisis VFB_HYS ±30 mV EN/DIM Max Dimming Voltage VDIM_MAX 2.56 V EN/DIM Mim Dimming Voltage VDIM_MIN 0.3 V EN/DIM Enable High Voltage VEN_HIGH VEN Rising 0.3 V EN/DIM Enable Low Volatge VEN_LOW VEN Falling 0.16 V EN/DIM Up-pulling Resistor REN 45 kΩ Recommended PWM Dimming Frequency FPWM 0.1 2 kHz Switch On Resistance RDS_ON 0.5 Ω Minimum On Time TON_MIN 100 ns Minimum Off Time TOFF_MIN 100 ns Recommended Maximum Operating Frequency FMAX 600 kHz Recommended Duty Cycle Range at FMAX D 30 70 % Start Up Time TSS External capacitor on dim pin is 4.7nF 0.3 ms |
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