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R1232D311B Datasheet(PDF) 6 Page - RICOH electronics devices division |
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R1232D311B Datasheet(HTML) 6 Page - RICOH electronics devices division |
6 / 24 page R1232D 6 • R1232DxxxB/D Topt =25°C Symbol Item Conditions Min. Typ. Max. Unit VIN Operating Input Voltage 2.6 5.5 V VOUT Step-down Output Voltage VIN =VCE=5.0V,IOUT=10mA ×0.980 ×1.020 V VFB Feedback Voltage VIN =VCE=5.0V,IOUT=10mA 0.784 0.800 0.816 V ∆VOUT/∆Topt Step-down Output Voltage Temperature Coefficient −40°C < = Topt < = 85°C ±150 ppm/ °C fosc Oscillator Frequency VIN =VCE=VSET+1.5V 1.91 2.25 2.58 MHz IDD Supply Current VIN =VCE=5.5V, VOUT=5.5V 170 240 310 µA Istandby Standby Current VCE =VOUT=0V, VIN=5.5V 0.0 5.0 µA ILXleak LX Leakage Current VIN =5.5V, VCE=0V, VLX =0V/5.5V −5.0 0.0 5.0 µA RONP ON Resistance of Pch Transistor VIN =5.0V, ILX=200mA 0.20 0.35 Ω RONN ON Resistance of Nch Transistor VIN =5.0V, ILX=200mA 0.20 0.35 Ω Maxduty Oscillator Maximum Duty Cycle 100 % tstart Soft-start Time VIN =VCE=5.0V, at no load 0.15 0.4 0.7 ms tprot Protection Delay Time VIN =VCE=5.0V 0.1 2.0 10.0 ms ILXlimit LX Current Limit VIN =VCE=5.0V 1.0 1.4 A VUVLO1 UVLO Detector Threshold VIN =VCE=2.6V -> 1.5V 2.10 2.25 2.40 V VUVLO2 UVLO Released Voltage VIN =VCE =1.5V -> 2.6V 2.20 VUVLO1 +0.10 2.50 V ICE CE Input Current VIN =5.5V, VCE =5.5V/0V −0.1 0.0 0.1 µA IVOUT VOUT Leakage Current VIN =5.5V, VCE=0V, VOUT =5.5V/0V −0.1 0.0 0.1 µA VCEH CE "H" Input Voltage VIN =5.5V 1.5 V VCEL CE "L" Input Voltage VIN =3.0V 0.3 V VTESTL TEST "L" Input Voltage VIN =3.0V 0.3 V |
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