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BD9470AEFV Datasheet(PDF) 4 Page - Rohm |
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BD9470AEFV Datasheet(HTML) 4 Page - Rohm |
4 / 39 page BD9470AFM・BD9470AEFV ●Electrical Characteristics (unless otherwise specified, Ta = 25°C, VCC=24V ) Parameter Symbol Specification unit Condition Min Typ Max 【Whole Device】 Operation Circuit Icc - 5.5 8.5 mA STB=3V, PWM1-6=3.3V Standby current IST - 40 80 μA STB=0V 【UVLO Block】 Operating voltage (VCC) VUVLO_VCC 6.5 7.5 8.5 V VCC=SWEEP UP Hysteresis voltage (VCC) VUHYS_VCC 150 300 600 mV VCC=SWEEP DOWN UVLO release voltage VUVLO_U 2.88 3.00 3.12 V VUVLO=SWEEP UP UVLO hysteresis voltage VUHYS_U 250 300 350 mV VUVLO=SWEEP DOWN UVLO pin leakage current UVLO_LK -2 0 2 μA VUVLO=4V 【DC/DC Block】 Error amp. Reference voltage (Min) VLED 0.36 0.40 0.44 V LEDx Terminal ILEDx = 40mA Error amp. basic voltage (ILED=130mA) VLED 0.428 0.450 0.472 V LEDx Terminal ILEDx = 130mA Oscillation frequency FCT 142.5 150 157. 5 KHz RT=100kohm Max. duty cycle of output N NMAX_DUTY 90 95 99 % RT=100kohm RT short protection range RT_DET -0.3 - VRT×90% V RT=SWEEP DOWN On resistance on N pin source side RONSO 1.5 3 6 Ω On resistance on N pin sink side RONSI 1.5 3 6 Ω RT pin voltage VRT 1 1.5 2 V RT=100kohm SS pin source current ISSSO -2.6 -2.0 -1.4 μA VSS=2V Soft start completion voltage VSS_END 3.52 3.70 3.88 V SS=SWEEP UP FB source current IFBSO -115 -100 -85 μA VLED=0V, VFB=1.0V FB sink current IFBSI 70 100 130 μA VLED=5.0V(ALL_CH), VFB=1.0V,VSS=4V FB source mode SS pin input voltage range FB_SO_SS 4.9 - - V SS=SWEEP UP FB sink/source mode SS pin input voltage range FB_SOSI_SS 3.9 - 4.4 V SS=SWEEP DOWN Over current detect voltage VCS 372 400 428 mV CS=SWEEP UP CS source current ICS 15 30 60 μA VCS=0V 【DC/DC protection Block】 OVP Detect Voltage (DCDC Stop) VOVP 2.90 3.00 3.10 V VOVP SWEEP UP OVP protection timer release VOVP_CAN VOVP-0.14 VOVP-0.1 VOVP-0.04 V VOVP SWEEP DOWN Short protection detect voltage VSCP 0.05 0.1 0.15 V VOVP SWEEP DOWN OVP pin leakage current OVP_LK -2 0 2 μA VOVP=4V 4/35 TSZ02201-0F10C1002000-1-2 © 2013 ROHM Co., Ltd. All rights reserved. 19.Oct.2013 Rev.003 www.rohm.com TSZ22111・15・001 |
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