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BD9673AEFJ-E2 Datasheet(PDF) 4 Page - Rohm |
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BD9673AEFJ-E2 Datasheet(HTML) 4 Page - Rohm |
4 / 23 page 4/20 Datasheet Datasheet BD9673AEFJ TSZ02201-0Q1Q0AJ00190-1-2 © 2013 ROHM Co., Ltd. All rights reserved. 28.JAN.2014 Rev.003 www.rohm.com TSZ22111・15・001 ●Absolute Maximum Ratings Item Symbol Ratings Unit VCC-GND Supply Voltage VCC 45 V BST-GND Voltage VBST 50 V BST-Lx Voltage ⊿VBST 7 V EN-GND Voltage VEN 45 V Lx-GND Voltage VLX 45 V FB-GND Voltage VFB 7 V VC-GND Voltage VC 7 V SYNC-GND Voltage SYNC 7 V High-side FET Drain Current IDH 3.5 A Power Dissipation Pd 3.76 (*1) W Operating Temperature Topr -40~+105 ℃ Storage Temperature Tstg -55~+150 ℃ Junction Temperature Tjmax +150 ℃ (*1)During mounting of 70×70×1.6t mm 4layer board (Copper area: 70mm×70mm).Reduce by 30.08mW for every 1℃ increase. (Above 25℃) ●Electrical Characteristics (Unless otherwise specified Ta=25℃, VCC=24V, Vo=5V,EN=3V ) Parameter Symbol Limits Unit Conditions Min. Typ. Max. 【Circuit Current】 Stand-by current of VCC Ist - 0 10 µA VEN=0V Circuit current of VCC Icc - 1 2 mA FB=1.2V 【Under Voltage Lock Out (UVLO)】 Detect Voltage Vuv 6.1 6.4 6.7 V Hysteresis width Vuvhy - 200 300 mV 【Oscillator】 Oscillating frequency fosc 270 300 330 kHz Max Duty Cycle Dmax 85 91 97 % 【Error Amp】 FB threshold voltage VFB 0.990 1.000 1.010 V Input bias current IFB -1.0 0 1.0 µA VFB=0V Error amplifier DC gain AVEA 700 7000 70000 V/V Trans Conductance GEA 110 220 440 µA/V IVC=±10µA, VC=1.5V Soft Start Time Tsoft 7 10 13 ms 【Current Sense Amp】 VC to switch current transconductance GCS 5 10 20 A/V 【Output】 Lx NMOS ON resistance RonH - 200 340 m Ω Lx pre-charge NMOS ON resistance RonL - 10 17 Ω |
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