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BD9479FV-XX Datasheet(PDF) 3 Page - Rohm |
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BD9479FV-XX Datasheet(HTML) 3 Page - Rohm |
3 / 29 page 3/26 Datasheet BD9479FV TSZ02201-0F1F0C100020-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 9.Aug.2012 Rev.001 www.rohm.com TSZ22111 ・ 15 ・ 001 ● Electrical Characteristics (Unless otherwise noted, Ta = 25 oC, VCC=24V) Parameter Symbol Limit Unit Condition Min. Typ. Max. [Whole Device] Operation current ICC - 8.7 14.0 mA STB=3V, PWM1-8=0V Standby current IST - 12 24 uA STB=0V [UVLO Block] Operation 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 Operation Voltage ( UVLO ) VUVLO 2.91 3.00 3.09 V UVLO=SWEEP UP Hysteresis Voltage ( UVLO ) VUHYS 170 210 250 mV UVLO=SWEEP DOWN [DC/DC Block] Error amp Base Voltage VEAMP 0.55 0.60 0.65 V BSx pin, VREF=0.9V Oscillation frequency FCT 142.5 150.0 157.5 kHz RT=100kΩ N pin MAX DUTY output NMAX_DUT Y 90 95 99 % RT=100kΩ N pin source ON resistor RNSO 0.5 1 2 Ω N pin sink ON resistor RNSI 0.5 1 2 Ω RT pin Voltage VRT 1.00 1.50 2.00 V RT=100kΩ SS pin source current ISSSO -2.4 -2.0 -1.6 uA Soft start ended Voltage VSS_ED 3.6 4.0 4.4 V FB pin source current IFBSO -110 -100 -90 uA FB pin sink current IFBSI 85 100 115 uA Over current detect Vlotage VCS 0.35 0.40 0.45 V [DC/DC Protection Block] CP pin source current ICPSO -2.4 -2.0 -1.6 uA CP pin detect Voltage VCP 2.375 2.500 2.625 V OVP High detect voltage VOVPH 2.137 2.250 2.363 V OVP Feedback Voltage VOVPFB 2.375 2.500 2.625 V OVP Low detect Voltage VOVPL 0.14 0.20 0.30 V [LED PNP Driver Block] CL pin current setting Voltage VRCL 295.5 300.0 304.5 mV VREF=0.9V CL pin current setting Voltage (Analog MAX) VRCLMAX -3% 1.0 +3% V VREF max=3.0V CL pin current setting Voltage (Analog MIN) VRCLMIN -3% 200.0 +3% mV VREF min=0.6V PNP Driver output sink resistor RBS 55 80 120 Ω PWMx=High, VCL=Low VREF pin input current IVREF -1.0 0.0 1.0 uA VREF=1V |
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