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R1224N332H Datasheet(PDF) 5 Page - RICOH electronics devices division |
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R1224N332H Datasheet(HTML) 5 Page - RICOH electronics devices division |
5 / 42 page R1224N ELECTRICAL CHARACTERISTICS • R1224Nxx2X (X=E/F/G/H/L/M) except R1224N102X Topt=25 °C Symbol Item Conditions Min. Typ. Max. Unit VIN Operating Input Voltage 2.3 18.5 V VOUT Step-down Output Voltage VIN =VCE=VSET+1.5V, IOUT=−100mA When VSET < = 1.5V, VIN=VCE=3.0V VSET ×0.98 VSET VSET ×1.02 V ∆VOUT/ ∆Topt Step-down Output Voltage Temperature Coefficient −40°C <= Topt <= 85°C ±100 ppm/°C fosc Oscillator Frequency VIN =VCE=VSET+1.5V, IOUT=−100mA When VSET < = 1.5, VIN=VCE=3.0V L/M Version E/G Version F/H Version 144 240 400 180 300 500 216 360 600 kHz ∆fosc/ ∆Topt Oscillator Frequency Temperature Coefficient −40°C <= Topt <= 85°C ±0.2 %/°C IDD1 Supply Current 1 VIN =VCE=VOUT=18.5V E/F/L/M Version G version H version 20 30 40 50 60 80 µA Istandby Standby Current VIN =18.5V, VCE=0V, VOUT=0V 0.0 0.5 µA IEXTH EXT “H” Output Current VIN =8V, VEXT=7.9V, VOUT=8V, VCE =8V −17 −10 mA IEXTL EXT “L” Output Current VIN =8V, VEXT=0.1V, VOUT=0V, VCE =8V 20 30 mA ICEH CE “H” Input Current VIN =VCE=VOUT=18.5V 0.0 0.5 µA ICEL CE “L” Input Current VIN =VOUT=18.5V, VCE=0V −0.5 0.0 µA VCEH CE “H” Input Voltage VIN =8V, VOUT=0V 1.5 V VCEL CE “L” Input Voltage VIN =8V, VOUT=0V 0.3 V Maxdty Oscillator Maximum Duty Cycle 100 % VFMdty VFM Duty Cycle E/F/L Version 35 % VUVLO1 UVLO Voltage VIN =VCE=2.5V to 1.5V, VOUT=0V 1.8 2.0 2.2 V VUVLO2 UVLO Release Voltage VIN =VCE=1.5V to 2.5V, VOUT=0V VUVLO1 +0.1 2.3 V tstart Delay Time by Soft-Start function VIN =VSET+1.5V, IOUT=−10mA VCE =0V→VSET+1.5V 5 10 20 ms tprot Delay Time for protection circuit VIN =VCE=VSET+1.5V VOUT =VSET+1.5V→0V 5 15 30 ms 5 |
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