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BD9397EFV Datasheet(PDF) 3 Page - Rohm |
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BD9397EFV Datasheet(HTML) 3 Page - Rohm |
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3 / 31 page  Datasheet Datasheet 3/27 TSZ02201-0F1F0C100330-1-2 © 2013 ROHM Co., Ltd. All rights reserved. 1.Sep.2015 Rev.006 www.rohm.com TSZ22111・15・001 BD9397EFV ●1.1 Electrical Characteristics 1(Unless otherwise specified, Ta=25°C，VCC=24V) Parameter Symbol Limit Unit Condition Min. Typ. Max. 【 Whole device】 Operating circuit current ICC - 9 16 mA STB=3V,LED1-6=ON, RT=30kΩ Stand-by circuit current ISTB - 12 20 μA STB=0V 【 REG9V block】 REG9V output voltage REG9V 8.9 9.0 9.1 V IO=0mA Maximum REG9V output current IREG9V 20 - - mA 【 Switching block】 N terminal source resistance RONH - 2.5 3.5 Ω ION=-10mA N terminal sink resistance RONL - 3.0 4.2 Ω ION=10mA 【 Over current protection (OCP) block】 Over current protection voltage VOCP 0.40 0.45 0.50 V VCS=SWEEP UP 【 Soft-start block】 SS terminal source current ISS -1.4 -1.0 -0.6 μA SS terminal release voltage VSS 2.9 3.0 3.1 V SS=SWEEP UP 【 Error amplifier block】 LED control voltage VLED 0.66 0.7 0.74 V LED_LV=0.7V FB sink current IFBSINK 55 100 155 μA LED=2.0V, VFB=1.0V FB source current IFBSOURCE -155 -100 -55 μA LED=0V, VFB=1.0V LED_LV terminal input current ILED_LV -2 0 2 uA VLED_LV=3V 【 CT oscillator block】 Oscillation frequency FCT 440 500 560 kHz RT=30kΩ MAX DUTY DMAX 78 84 91 % 【 Over voltage protection (OVP) block】 OVP detection voltage VOVP 2.34 2.43 2.52 V VOVP=SWEEP UP OVP hysteresis voltage VOVPHYS 10 50 100 mV VOVP=SWEEP DOWN OVP feedback voltage FBOVP 0.93 1.05 1.17 V PMW1-6=0V,SS=2.8V, VLED_LV=0.7V 【 Short current protection (SCP) block】 Short circuit protection voltage VSCPmL 0.12 0.20 0.28 V VOVP=SWEEP DOWN, FAILMODE=0V VSCPmH 0.74 0.79 0.84 V VOVP=SWEEP DOWN, FAILMODE=3V 【 M_LED block】 Diode forward voltage VFLED 1120 1340 1560 mV VLED=0V Forward voltage offset each ch VFOFFSET - - 20 mV VLED=0V REG9V pull up resistance RM_DET 60 100 140 kΩ |
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