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R1221N25AD Datasheet(PDF) 5 Page - RICOH electronics devices division |
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R1221N25AD Datasheet(HTML) 5 Page - RICOH electronics devices division |
5 / 21 page 12345 Rev. 1.11 - 5 - lR1221N***B(D,F,H) Output Voltage : Vo, Detector Threshold : VD (Topt=25 °C) Symbol Item Conditions MIN. TYP. MAX. Note* Unit VIN Operating Input Voltage 2.3 13.2 V VOUT Step-down Output Voltage VIN=VCE=Vo+1.2V, IOUT=-10mA Vo ´ 0.98 Vo Vo ´ 1.02 AV DVOUT/ DT Step-down Output Voltage Temperature Coefficient -40 °C £ Topt £ 85°C ±100 ppm/ °C fosc Oscillator Frequency VIN=VCE=Vo+1.2V, IOUT=-100mA 400 500 600 A kHz DfOSC/ DT Frequency Temperature Coefficient -40 °C £ Topt £ 85°C ±0.3 %/ °C IDD1 Supply Current1 VIN=13.2V,VCE=13.2V,VOUT=13.2V 140 200 B mA Istb Standby Current VIN=13.2V,VCE=0V,VOUT=0V 0 0.5 C mA IEXTH EXT "H" Output Current VIN=8V,VEXT=7.9V,VOUT=8V,VCE=8V -10 -6 D mA IEXTL EXT "L" Output Current VIN=8V,VEXT=0.1V,VOUT=0V,VCE=0V 10 20 D mA ICEH CE "H" Input Current VIN=13.2V,VCE=13.2V,VOUT=13.2V 0 0.5 E mA ICEL CE "L" Input Current VIN=13.2V,VCE=0V,VOUT=13.2V -0.5 0 E mA VCEH CE "H" Input Voltage VIN=8V,VCE=0V ®1.5V 0.8 1.2 F V VCEL CE "L" Input Voltage VIN=8V,VCE=1.5V ®0V 0.3 0.8 F V Maxdty Oscillator Maximum Duty Cycle 100 % VFMdty VFM Duty Cycle Applied to B and F versions only 25 % Tstart Delay Time by Soft-Start function VIN=Vo+1.2V,VCE=0V ®Vo+1.2V At 80% of rising 36 10 F ms Tprot Delay Time for protection circuit VIN=Vo+1.2V,VCE=Vo+1.2V ®0V 124 G ms IVDLK VDOUT Output Leakage Current VIN=VOUT=VCE=VDOUT=8V 0 0.5 I mA IVDL VDOUT “L” Output Current VIN=VOUT=2.3V,VCE=0V, VDOUT=0.1V 0.5 1 I mA -VDET Detector Threshold VIN=6V, VCE=6V, VOUT=VD ´1.2V®0V VD´ 0.98 VD VD ´ 1.02 JV tVDET Output Delay Time for Released Voltage VIN=6V, VCE=6V, VOUT=0V ®VD´1.2V At 80% of rising 1.5 3.5 6.0 J ms VHYS Detector Threshold Hysteresis VIN=6V, VCE=6V, VOUT=0V ®VD´1.2V VD´ 0.01 VD ´ 0.03 VD ´ 0.05 JmV D-VDET/ DT Detector Threshold Temperature Coefficient -40 °C £ Topt £ 85°C ±100 ppm/ °C Note: Refer to Test Circuits |
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