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R1280D002A Datasheet(PDF) 4 Page - RICOH electronics devices division |
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R1280D002A Datasheet(HTML) 4 Page - RICOH electronics devices division |
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4 / 26 page  Rev.1.10 - 4 - q R1280D002B Pin No. Symbol Description 1 EXT1 External Transistor of Channel 1 Drive Pin (CMOS Output) 2 GND Ground Pin 3 CE Chip Enable Pin 4 DTC1 Maximum Duty Cycle of Channel 1 Setting Pin 5VFB1 Feedback pin of Channel 1 6VFB2 Feedback pin of Channel 2 7 DTC2 Maximum Duty Cycle of Channel 2 Setting Pin 8 Vrefout Reference Output Pin 9VIN Voltage Supply Pin of the IC 10 EXT2 External Transistor of Channel 2 Drive Pin (CMOS Output) s s s s ABSOLUTE MAXIMUM RATINGS q R1280D002A/C Symbol Item Rating Unit VIN VIN Pin Voltage 6.5 V VEXT1,2 VEXT1,2 Pin Output Voltage -0.3 ∼VIN+0.3 V VAMPOUT1 AMPOUT1 Pin Voltage -0.3 ∼VIN+0.3 V VDTC1,2 DTC1,2 Pin Voltage -0.3 ∼VIN+0.3 V Vrefout VREFOUT Pin Voltage -0.3 ∼VIN+0.3 V VFB1,2 VFB1,VFB2 Pin Voltage -0.3 ∼VIN+0.3 V IEXT1,2 EXT1,2 Pin Output Current ±50 mA PD Power Dissipation 250 mW Topt Operating Temperature Range -40 to +85 °C Tstg Storage Temperature Range -55 to +125 °C q R1280D002B Symbol Item Rating Unit VIN VIN Pin Voltage 6.5 V VEXT1,2 VEXT1,2 Pin Output Voltage -0.3 ∼VIN+0.3 V VCE CE Pin Voltage -0.3 ∼VIN+0.3 V VDTC1,2 DTC1,2 Pin Voltage -0.3 ∼VIN+0.3 V Vrefout VREFOUT Pin Voltage -0.3 ∼VIN+0.3 V VFB1,2 VFB1,VFB2 Pin Voltage -0.3 ∼VIN+0.3 V IEXT1,2 EXT1,2 Pin Output Current ±50 mA PD Power Dissipation 250 mW Topt Operating Temperature Range -40 to +85 °C Tstg Storage Temperature Range -55 to +125 °C |
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