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BD9478F-XX Datasheet(PDF) 3 Page - Rohm |
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BD9478F-XX Datasheet(HTML) 3 Page - Rohm |
3 / 15 page 3/12 Datasheet BD9478F TSZ02201-0F1F0C100010-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 24. Jul.2012 Rev.002 www.rohm.com TSZ22111 ・15・001 ●Electrical Characteristics (Unless otherwise specified, Ta=25°C,VCC=5V) Parameter Symbol Limit Unit Condition Min. Typ. Max. [Whole Device] Circuit Current during Operation ICC 2 4 mA PDIM=3V,CT=0.01uF VSYNC=EXTPWM=open [UVLO Block] Release voltage VUVLO 3.5 3.8 4.1 V VCC=SWEEP UP Hysteresis voltage VUHYS 150 300 600 mV VCC=SWEEP DOWN [PLL Block] Oscillation frequency when VSYNC is input no signal fCTNS 142 150 158 Hz CT=0.01µF,LPF=0V Triangle wave maximum voltage VCTH 2.70 3.00 3.30 V fCT=150Hz Triangle wave minimum voltage VCTL 0.40 0.50 0.60 V fCT=150Hz Synchronous signal abnormal judgment voltage, (at High frequency input) CT_SYNC _DET1 2.612 2.750 2.888 V LPF=2.0V→3.0V Synchronous signal normal judgment voltage, (at High frequency input) CT_SYNC _OKH 2.517 2.650 2.783 V LPF=3.0V→2.0V Internal RT voltage at Synchronous signal, abnormal judgment when High frequency input VRTFH - 2.750 - V LPF=3V Synchronous signal abnormal judgment voltage, (at Low frequency input) CT_SYNC _DET2 0.331 0.350 0.389 V LPF=1.0V→0.1V Synchronous signal normal judgment voltage, (at Low frequency input) CT_SYNC _OKL 0.414 0.450 0.486 V LPF=0.1V→1.0V Internal RT voltage at Synchronous signal, abnormal judgment when High frequency input VRTFL - 0.360 - V LPF=0.25V Switch voltage to internal fixed frequency VINTF 0.10 0.15 0.20 V LPF=1.0V→0.1V Internal RT voltage at switched to internal fixed, frequency VRTFI - 0.900 - V LPF=0V 【【【【Input pin (EXTPWM,PDIM,VSYNC)】】】】 Input High level VIH 2.0 - 20 V Input Low level VIL -0.3 - 0.8 V Pull down resistance RIPD 0.5 1.0 2.0 M 【【【【Output pin (PWMOUT)】】】】 Output High level VOH 4.3 4.85 - V Io=-1mA Output Low level VOL - 0.1 0.5 V Io=1mA |
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