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MP3312GC 数据表(PDF) 3 Page - Monolithic Power Systems |
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MP3312GC 数据表(HTML) 3 Page - Monolithic Power Systems |
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3 / 15 page ![]() MP3312 - 2.7V-5.5V INPUT, 38V OVP, DUAL-CHANNEL WHITE LED DRIVER MP3312 Rev. 1.02 www.MonolithicPower.com 3 1/13/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS VIN =3.7V, VEN = VPWM= HIGH, Typical Values are at TA = 25°C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Unit Power Supply Operating Input Voltage VIN 2.7 5.5 V Supply Current (Quiescent) IQ VIN=3.7V, VEN= VPWM= High, no load with switching 1 2 mA Supply Current (Shutdown) IST VEN=0V, VIN=3.7V 1 μA Input UVLO Threshold VIN_UVLO Rising Edge 2.4 2.6 V Input UVLO Hysteresis 200 mV OSCILLATOR Switching Frequency fSW 1 1.2 1.4 MHz Maximum Duty Cycle DMAX 93 95 % Minimum On Time (5) TON_MIN 100 ns Power Switch Main Switch On-Resistance RDSON_M VIN=3.7V 0.2 Ω Error Amplifier Error Amplifier Transconductance gm 370 uS Max Sink/Source Current 42 μA Current Regulation VLEDx Regulation Voltage VREG ILED1=ILED2=20mA 240 mV ISET Pin Voltage VISET 1.207 1.232 1.247 V Current Multiplier KISET 1020 Current Accuracy IISET =20uA, (|IMIN-IISET|/IISET,|IMAX-IISET|/ IISET) -2 2 % Current Matching IISET =20uA, (IMAX –IMIN) /IAVG 1 2 % Current Sink Max Output Current 30 mA EN & PWM Logic PWM Input High Threshold VPWM_HI VPWM Falling 1.2 V PWM Input Low Threshold VPWM_LO VPWM Rising 0.4 V EN High Voltage VEN_HIGH VEN Rising 1.2 V EN Low Voltage VEN_LOW VEN Falling 0.4 V EN & PWM Pull Down Resistor RPD 800 kΩ EN Low Logic To Shutdown Time TSD_EN EN High to Low 2.5 ms PWM Low Logic To Shutdown Time TSD_PWM PWM High to Low 20 ms Minimum PWM On Time TPO_MIN 200 ns |
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