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L7918C Scheda tecnica(PDF) 3 Page - STMicroelectronics |
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L7918C Scheda tecnica(HTML) 3 Page - STMicroelectronics |
3 / 13 page * Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used. ELECTRICAL CHARACTERISTICS FOR L7905C (refer to the test circuits, Tj = 0 to 150 oC, Vi = -10V, Io = 500 mA, Ci = 2.2 µF, Co =1 µF unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit Vo Output Voltage Tj =25 oC-4.8 -5 -5.2 V Vo Output Voltage Io = -5mA to -1A Po ≤ 15 W Vi = 8 to 20 V -4. 75 -5 -5.25 V ∆Vo* Line Regulation Vi =-7 to -25 V Tj =25 oC Vi =-8 to -12 V Tj =25 oC 100 50 mV mV ∆Vo* Load Regulation Io = 5 to 1500 mA Tj =25 oC Io = 250 to 750 mA Tj =25 oC 100 50 mV mV Id Quiescent Current Tj =25 oC3 mA ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi =-8 to -25 V 1.3 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -0. 4 mV/ oC eN Output Noise Voltage B = 10Hz to 100KHz Tj =25 oC100 µV SVR Supply Voltage Rejection ∆Vi = 10 V f = 120 Hz 54 60 dB Vd Dropout Voltage Io =1 A Tj =25 oC ∆VO =100 mV 1.4 V Isc Short Circuit Current 2.1 A Iscp Short Circuit Peak Current Tj =25 oC2.5 A ELECTRICAL CHARACTERISTICS FOR L7952C (refer to the test circuits, Tj = 0 to 150 oC, Vi = -10V, Io = 500 mA, Ci = 2.2 µF, Co =1 µF unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit Vo Output Voltage Tj =25 oC -5.0 -5. 2 -5.4 V Vo Output Voltage Io = -5mA to -1A Po ≤ 15 W Vi =-9 to -21 V -4. 95 -5. 2 -5.45 V ∆Vo* Line Regulation Vi =-8 to -25 V Tj =25 oC Vi =-9 to -12 V Tj =25 oC 105 52 mV mV ∆Vo* Load Regulation Io = 5 to 1500 mA Tj =25 oC Io = 250 to 750 mA Tj =25 oC 105 52 mV mV Id Quiescent Current Tj =25 oC3 mA ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi =-9 to -25 V 1.3 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -0. 5 mV/ oC eN Output Noise Voltage B = 10Hz to 100KHz Tj =25 oC125 µV SVR Supply Voltage Rejection ∆Vi = 10 V f = 120 Hz 54 60 dB Vd Dropout Voltage Io =1 A Tj =25 oC ∆VO =100 mV 1.4 V Isc Short Circuit Current 2 A Iscp Short Circuit Peak Current Tj =25 oC2.5 A L7900 3/13 |
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