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NJW4813 Datasheet(PDF) 4 Page - New Japan Radio |
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NJW4813 Datasheet(HTML) 4 Page - New Japan Radio |
4 / 14 page NJW4813 - 4 - Ver.2012-10-19 ELECTRICAL CHARACTERISTICS Boost Converter Block (Unless otherwise noted, VDD_SW=VSTBYb=3.7V, RT=100kΩ, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Under Voltage Lockout Block UVLO Release Voltage VRUVLO_SW 2.1 2.4 2.7 V UVLO Operate Voltage VDUVLO_SW 2.0 2.2 2.5 V UVLO Hysteresis Voltage ∆VUVLO_SW VRUVLO_SW - VDUVLO_SW – 0.2 – V Soft Start Block Soft Start Time TSS VB=0.95V 8 17 28 ms Oscillator Block Oscillation Frequency fOSC 630 700 770 kHz Oscillation Frequency deviation (Supply voltage) fDV VDD_SW=3.0 to 5.5V – 1 – % Oscillation Frequency deviation (Temperature) fDT Ta= -40 to +85 °C – 3 – % Error Amplifier Block Reference Voltage VB Short IN- and FB, Measuring IN- Pin -1.0% 1.00 +1.0% V Input Bias Current IB VB=1.0V -0.1 – +0.1 µA Open Loop Gain AV – 80 – dB Gain Bandwidth GB – 1 – MHz Output Source Current IOM+ VFB=1V, VIN-=0.9V 8 16 24 µA Output Sink Current IOM- VFB=1V, VIN-=1.1V 0.9 1.4 4 mA IN- pin Clamp Voltage VCLIN- VSTBYb=0V, VDD_SW=5.5V, ICLIN-=10µA 4.8 5.2 5.6 V RADJ pin FET ON Resistance RON_RADJ IRADJ=0.1mA – 200 280 Ω RADJ pin FET Leak Current ILEAK_RADJ VSTBYb=0V, VRADJ=3.3V – – 1 µA PWM Comparate Block Maximum Duty Cycle MAXDUTY VIN-=0.9V 82 87 92 % Output Block Output ON Resistance RON_SW ISW=100mA – 0.6 1.2 Ω Switching Current Limit ILMT_SW 1 2 – A Switching Leak Current ILEAK_SW VSTBYb=0V, VSW=40V – – 1 µA |
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