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BM2P052F Datasheet(PDF) 3 Page - Rohm |
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BM2P052F Datasheet(HTML) 3 Page - Rohm |
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3 / 24 page  3/20 Datasheet Datasheet BM2PXX2F TSZ02201-0F2F0A200040-1-2 24. Sep.2015.Rev.006 © 2012 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111・15・001 ●Electrical Characteristics (Unless otherwise noted, Ta = 25 C, VCC = 15 V) Parameter Symbol Specifications Unit Conditions Minimum Standard Maximum [Circuit current] Circuit current (ON) 1 I ON1 410 600 790 μA BM2P052F, FB=2.0V (at pulse operation) Circuit current (ON) 1 I ON1 350 500 650 μA BM2P092F, FB=2.0V (at pulse operation) Circuit current (ON) 2 I ON2 - 400 500 μA FB=0.0V(at burst operation) [VCC protection function] VCC UVLO voltage 1 V UVLO1 12.50 13.50 14.50 V VCC rises VCC UVLO voltage 2 V UVLO2 7.50 8.20 8.90 V VCC falls VCC UVLO hysteresis V UVLO3 - 5.30 - V VUVLO3= VUVLO1- VUVLO2 VCC OVP voltage 1 V OVP1 26.0 27.5 29.0 V VCC rises VCC OVP voltage 2 V OVP2 23.5 V VCC drop Latch released VCC voltage V LATCH - V UVLO2-0.5 - V VCC Recharge start voltage V CHG1 7.70 8.70 9.70 V VCC Recharge stop voltage V CHG2 12.00 13.00 14.00 V Latch mask time T LATCH 50 100 150 us Thermal shut down temperature T SD 118 145 - C [PWM type DCDC driver block] Oscillation frequency 1 F SW1 60 65 70 KHz FB=2.00V Oscillation frequency 2 F SW2 20 25 30 KHz FB=0.40V Frequency hopping width 1 F DEL1 - 4.0 - KHz FB=2.0V Hopping fluctuation frequency F CH 75 125 175 Hz Soft start time 1 T SS1 0.30 0.50 0.70 ms Soft start time 2 T SS2 0.60 1.00 1.40 ms Soft start time 3 T SS3 1.20 2.00 2.80 ms Soft start time 4 T SS4 4.80 8.00 11.20 ms Maximum duty Dmax 68.0 75.0 82.0 % FB pin pull-up resistance R FB 23 30 37 kΩ Δ FB / ΔCS gain Gain - 4.00 - V/V FB burst voltage V BST 0.300 0.400 0.500 V FB falls FB voltage of starting Frequency reduction mode V DLT 1.100 1.250 1.400 V FB OLP voltage 1a V FOLP1A 2.60 2.80 3.00 V Overload is detected (FB rise) FB OLP voltage 1b V FOLP1B - 2.60 - V Overload is detected (FB drop) FB OLP ON timer TFOLP1 40 64 88 ms FB OLP Start up timer T FOLP2 26 32 38 ms FB OLP OFF timer T FOLP2 358 512 666 ms [Over current detection block] Overcurrent detection voltage V CS 0.380 0.400 0.420 V Ton=0us Overcurrent detection voltage SS1 V CS_SS1 - 0.100 - V 0[ms] ~ Tss1[ms] Overcurrent detection voltage SS2 V CS_SS2 - 0.150 - V TSS1 [ms] ~ TSS2 [ms] Overcurrent detection voltage SS3 V CS_SS3 - 0.200 - V TSS2 [ms] ~ TSS3[ms] Overcurrent detection voltage SS4 V CS_SS4 - 0.300 - V TSS3 [ms] ~ TSS4 [ms] Leading Edge Blanking Time T LEB - 250 - ns Over current detection AC Voltage compensation factor K CS 12 20 28 mV/us SOURCE pin short protection voltage V CSSHT 0.020 0.050 0.080 V [Start circuit block] Start current 1 I START1 0.100 0.500 1.000 mA VCC= 0V Start current 2 I START2 1.000 3.000 6.000 mA VCC=10V OFF current I START3 - 10 20 uA Inflow current from Drain pin after UVLO released UVLO. When MOSFET is OFF Start current switching voltage V SC 0.800 1.500 2.100 V |
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