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MP3309L Arkusz danych(PDF) 4 Page - Monolithic Power Systems |
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MP3309L Arkusz danych(HTML) 4 Page - Monolithic Power Systems |
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4 / 12 page ![]() MP3309L―2.7V-5.5V INPUT, 24V OUTPUT, fs-PROGRAMMABLE, WHITE LED DRIVER MP3309L Rev. 1.01 www.MonolithicPower.com 4 7/18/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS VIN =3.6V, VEN = VIN, TA = 25°C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units STEP-UP CONVERTER Operating Input Voltage VIN 2.7 5.5 V Supply Current (Quiescent) IQ VIN=3.6V, VEN= VIN, no load with switching 420 μA Supply Current (Shutdown) IST VEN=0V, VIN=3.6V 1 μA EN Bit=0, VIN=3.6V 68 μA Input UVLO Threshold VIN_UVLO Rising Edge 2.5 V Input UVLO Hysteresis 200 mV EN High Voltage VEN_HIGH VEN Rising 1.2 V EN Low Voltage VEN_LOW VEN Falling 0.4 V Switching Frequency fSW ROSC= 200kΩ 540 640 740 kHz Maximum Duty Cycle DMAX Sync Mode, 600kHz 89 93 % Non-sync Mode, 600kHz 90 95 Feedback Regulation Voltage VREF 198 200 202 mV VREF Ramp-Up Time tSTEP 320 μs POWER SWITCH Main Switch On-Resistance RDSON_M VIN=3.6V 0.3 0.5 Ω Sync Switch On-Resistance RDSON_S VIN=3.6V 0.5 0.8 Ω CURRENT DIMMING PWMH Input Low Threshold VPWM_LO VPWM Falling 0.4 V PWMH Input High Threshold VPWM_HI VPWM Rising 1.2 V PWML Shutdown Time tSD EN/PWML High to Low 20 ms PROTECTION OVP Voltage VOVP OVP 22.5 24 25.5 V Hysteresis 2 V Cycle-Cycle Current Limit ILIM 1.1 1.6 A Startup Current Limit ILIM_START Max Duty Cycle 0.85 A Time Step for Half Current Limit TLIM_HALF 5 ms OVP UVLO Threshold VOVP_UV 1.24 V Thermal Shutdown Threshold tST 150 °C Thermal Shutdown Hysteresis 25 °C |
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