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BD3571HFP Arkusz danych(PDF) 4 Page - Rohm |
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BD3571HFP Arkusz danych(HTML) 4 Page - Rohm |
4 / 10 page Technical Note 4/9 BD3570FP/HFP, BD3571FP/HFP, BD3572FP/HFP, BD3573FP/HFP BD3574FP/HFP, BD3575FP/HFP www.rohm.com 2011.03 - Rev.B © 2011 ROHM Co., Ltd. All rights reserved. ● Block Diagram ● I/O Circuit diagram (All resistance values are typical.) ● Pin Assignments TO252-3 TO252-5 HRP5 Pin No. Pin name Function 1 VCC Power supply pin 2 N.C. N.C. pin 3 VO Voltage output pin Fin GND GND pin Pin No. Pin name Function 1 VCC Power supply pin 2 SW N.C. VO ON/OFF function pin N.C. pin(BD3572FP only) 3 N.C. N.C. pin 4 N.C. ADJ N.C. pin Output voltage setting pin(BD3572,3575FP only) 5 VO Voltage output pin Fin GND GND pin Pin No. Pin name Function 1 VCC Power supply pin 2 SW N.C. VO ON/OFF function pin (BD3573,3574,3575HFP only) N.C. pin 3 GND GND pin 4 N.C. ADJ N.C. pin Output voltage setting pin(BD3572,3575HFP only) 5 VO Voltage output pin Fin GND GND pin 1 23 FIN Fig. 19 FIN 1 23 4 5 Fig.20 Fig. 21 12 3 4 5 FIN GND Vcc Vref OCP TSD Vo Fin 1 N.C. 2 3 Cin Fig.13 TO252-3 Cin:0.33μF~1000μF Co:0.1μF~1000μF Co Fig.14 TO252-5 Vo Co ADJ (N.C. * 1)) GND Vcc Vref OCP TSD Fin 1 5 Cin 4 * 1) * 2) 2 SW GND Vref OCP TSD Vo 5 Co 4 Fin SW 2 3 N.C. ADJ (N.C. * 1)) * 1) * 2) * 1)For Fixed Voltage Regulator only * 2)For adjustable Voltage Regulator only Fig.15 HRP5 Vcc 1 Cin 3 Fig.16 2PIN[SW] SW 210K 1K 200K Fig.17 5PIN[VO] BD3570,3571,3573,3574 Vcc Vo 1992K: BD3570, BD3573 3706K: BD3571, BD3574 1250K Fig.18 4.5PIN[ADJ,VO] BD3572,BD3575 Vcc Vo 150 |
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