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BM1P068FJ Datasheet(PDF) 3 Page - Rohm |
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BM1P068FJ Datasheet(HTML) 3 Page - Rohm |
3 / 30 page 3/26 Datasheet Datasheet BM1P068FJ TSZ02201-0F2F0A200190-1-2 24.Oct.2013.Rev.001 © 2013 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111・15・001 ● Electrical characteristics of control IC block (Unless otherwise noted, Ta = 25°C, VCC = 15 V) Parameter Symbol Rating Unit Conditions Min. Typ. Max. [PWM type DC/DC driver block] Oscillation frequency 1a FSW1a 60 65 70 kHz FB = 2.00 V average frequency Oscillation frequency 2 FSW2 - 25 - kHz FB = 0.40 V average frequency Frequency hopping range FDEL1 - 4.0 - kHz FB = 2.00 V average frequency Hopping fluctuation frequency FCH 75 125 175 Hz Minimum pulse width Tmin - 400 - ns Soft start time 1 TSS1 0.30 0.50 0.70 ms Soft start time 2 TSS2 0.60 1.00 1.40 ms Soft start time 3 TSS3 1.20 2.00 2.80 ms Soft start time 4 TSS4 2.40 4.00 5.60 ms Maximum duty Dmax 68.0 75.0 82.0 % FB pin pull-up resistance RFB 22 30 38 k Ω FB / CS gain Gain - 4.00 - V/V FB burst voltage 1 VBST1 0.300 0.400 0.500 V FB drop FB burst voltage 2 VBST2 0.350 0.450 0.550 V FB rise FBOLP voltage 1a VFOLP1A 2.60 2.80 3.00 V When overload is detected (FB rise) FBOLP voltage 1b VFOLP1B - VFOLP2A -0.2 - V When overload is detected (FB drop) FBOLP detection timer TFOLP 44 64 84 ms [Overcurrent detection block] Overcurrent detection voltage VCS 0.380 0.400 0.420 V Ton = 0 us Overcurrent detection voltage SS1 VCS_SS1 - 0.100 - V 0 [ms] ~ Tss1 [ms] Overcurrent detection voltage SS2 VCS_SS2 - 0.150 - V TSS1 [ms] ~ TSS2 [ms] Overcurrent detection voltage SS3 VCS_SS3 - 0.200 - V TSS2 [ms] ~ TSS3[ms] Overcurrent detection voltage SS4 VCS_SS4 - 0.300 - V TSS3 [ms] ~ TSS4 [ms] Leading edge blanking time TLEB - 250 - ns Overcurrent detection AC compensation factor KCS 12 20 28 mV/us |
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