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UC3380 датащи(PDF) 4 Page - Unisonic Technologies |
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UC3380 датащи(HTML) 4 Page - Unisonic Technologies |
4 / 9 page UC3380 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 4 of 9 www.unisonic.com.tw QW-R502-099.C ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT VOUT Pin Voltage VOUT 12 V SHUTDOWN Pin Voltage VSHUTDOWN VSS-0.3~12 V EXT Pin Voltage VEXT -0.3~ VOUT+0.3 V EXT Pin Current IEXT ±80 mA Power Dissipation PD 250 mW Operating Ambient Temperature TOPR -40~+85 °C Storage Temperature TSTG -40~ +125 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS Refer to the test circuit, TOPR=25ºC, VIN=VOUT (S)*0.6, IOUT=VOUT (S)/50Ω, unless otherwise specified. PARAMETER SYMBOL TEST CIRCUIT TEST CONDITION MIN TYP MAX UNIT TOTAL DEVICE Output Voltage VOUT 2 VOUT (S)*0.976 VOUT (S) VOUT (S)*1.024 V Supply Current 1 IS1 1 VOUT=VOUT (S)*0.95 39.8 66.4 uA Supply Current 2 IS2 1 VOUT=VIN (S)+0.5V 6.3 12.5 uA Input Voltage VIN 2 10 V Operation Holding Voltage VHOLD 2 Measured by decreasing VIN voltage gradually, when IOUT=1mA. 0.7 V Operation Start Voltage VST1 2 IOUT=1mA 0.9 V Oscillation Start Voltage VST2 1 Increase the VIN until EXT pin output the oscillating signal 0.8 V Oscillation Frequency fOSC 1 VOUT=VOUT (S)*0.95 85 100 115 KHZ Duty Ratio Duty 1 VOUT=VOUT (S)*0.95 75 83 90 % Line Regulation ⊿ LNR 2 VIN=VOUT (S)*0.4 to *0.6 30 60 mV Load Regulation ⊿ LDR 2 IOUT=10uA to VOUT (S)/50*1.25 30 60 mV Temperature Coefficient ET 2 ⊿ VOUT/(⊿TOPR*VOUT) TOPR=-40°C to +85°C ±50 ppm/ °C Efficiency EF 2 86 % Soft Start time Ts 2 3.0 6.0 12.0 ms SHUTDOWN Shutdown Supply Current ISS 1 VSHUTDOWN=0 0.5 uA ISH VSHUTDOWN=VOUT (S)*0.95 0.1 uA Shutdown Pin Input Current ISL 1 VSHUTDOWN=0 -0.1 uA VIH Shutdown pin “L” to “H” until EXT output oscillating signal 0.75 V VIL1 VOUT≥1.5V 0.3 V Shutdown Pin Input Voltage Threshold V IL2 1 Shutdown pin “H” to “L” until EXT output oscillating signal VOUT<1.5V 0.2 V EXT IEXTH 1 VEXT=VOUT (S) -0.4V -16.1 -32.3 mA EXT Pin Current IEXTL 1 VEXT= 0.4V 27.4 54.8 mA Note: VOUT (S) is the value of the set output voltage. |
Аналогичный номер детали - UC3380 |
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Аналогичное описание - UC3380 |
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