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BD9775FV Datasheet(PDF) 8 Page - Rohm |
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BD9775FV Datasheet(HTML) 8 Page - Rohm |
8 / 15 page Technical Note 8/14 www.rohm.com 2011.05 - Rev.A © 2011 ROHM Co., Ltd. All rights reserved. BD9775FV 4) Setting the Time for Short Circuit Protection The time (tscp) from output short to latch activation is determined by the capacitor, Cscp, connected SCP pin. tscp=7.96×10 5×Cscp [sec] (typ.) Short SCP to GND if SCP function is not being used. Fig.7 Without SCP 5) Single Channel Operation This device can be used as a single output. The connection is as follows; DTC, FB, CTL, CL Short to GND VS, PVCC Short to VCC INV Short to VREF Fig.8 Single Channel Operation 6) Setting the Oscillating Frequency The oscillating frequency can be set by selecting the timing resistor (RRT) and the timing capacitor (CCT). Fig.9 Oscillating Frequency vs. Timing Capacitance (CCT) Fig.10 Oscillating Frequency vs. Timing Capacitance (RRT) SCP DTC FB CTL CL VS PVCC INV VREF VCC 10 100 1000 10 100 1000 Timing Resistance (kΩ) CCT=470pF CCT=1000pF CCT=100pF 10 100 1000 100 1000 10000 Timing Capacitance(pF) RRT=100kΩ RRT=27kΩ RRT=5.1kΩ |
Similar Part No. - BD9775FV_11 |
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Similar Description - BD9775FV_11 |
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