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NJW4131R-B Datasheet(PDF) 4 Page - New Japan Radio |
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NJW4131R-B Datasheet(HTML) 4 Page - New Japan Radio |
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4 / 20 page  NJW4131 - 4 - Ver.2012-08-03 ELECTRICAL CHARACTERISTICS (Unless other noted, V+=VON/OFF=12V, RT=27kΩ, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Under Voltage Lockout Block ON Threshold Voltage VT_ON V+= L → H 3.8 3.9 4.0 V OFF Threshold Voltage VT_OFF V+= H → L 3.7 3.8 3.9 V Hysteresis Voltage VHYS 60 100 – mV Soft Start Block Soft Start Time TSS VB=0.95V 2 4 8 ms Oscillator Block Oscillation Frequency fOSC 630 700 770 kHz Oscillation Frequency (Low Frequency Control) fOSC_LOW VIN-=0.4V, VFB=0.65V – 270 – kHz RT pin Voltage VRT 0.240 0.275 0.310 V Oscillate Supply Voltage Fluctuations fDV V+=4V to 35V – 1 – % Oscillate Temperature Fluctuations fDT Ta=-40 °C to +85°C – 3 – % Error Amplifier Block Reference Voltage VB -1.0% 1.00 +1.0% V Input Bias Current IB -0.1 – +0.1 µA Open Loop Gain AV – 80 – dB Gain Bandwidth GB – 0.6 – MHz Output Source Current IOM+ VFB=1V, VIN-=0.9V 8 16 24 µA Output Sink Current IOM- VFB=1V, VIN-=1.1V 1 2 4 mA PWM Comparate Block Maximum Duty Cycle MAXDUTY VIN-=0.9V 85 90 95 % Output Block A version, ISW=1A – 0.2 0.4 Ω Output ON Resistance RON B version, ISW=1A – 0.2 0.4 Ω A version 1.4 1.7 2.0 A Switching Current Limit ILIM B version 1 1.35 1.7 A Switching Leak Current ILEAK VON/OFF=0V, VSW=40V – – 1 µA ON/OFF Block ON Control Voltage VON VON/OFF= L → H 1.6 – V+ V OFF Control Voltage VOFF VON/OFF= H → L 0 – 0.5 V Pull-down Resistance RPD – 400 – k Ω General Characteristics Quiescent Current IDD RL=no load, VIN-=0.9V, VFB=0.65V – 2.3 2.8 mA Standby Current IDD_STB VON/OFF=0V – – 1 µA |
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