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MC34268DT Fiches technique(PDF) 2 Page - ON Semiconductor |
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MC34268DT Fiches technique(HTML) 2 Page - ON Semiconductor |
2 / 8 page MC34268 http://onsemi.com 2 MAXIMUM RATINGS Rating Symbol Value Unit Power Supply Input Voltage Vin 15 V Power Dissipation and Thermal Characteristics DT Suffix, Plastic Package, Case 369A TA = 25°C, Derate Above TA = 25°C Thermal Resistance, Junction–to–Case Thermal Resistance, Junction–to–Air D Suffix, Plastic Package, Case 751 TA = 25°C, Derate Above TA = 25°C Thermal Resistance, Junction–to–Case Thermal Resistance, Junction–to–Air ST Suffix, Plastic Package, Case 318E TA = 25°C, Derate Above TA = 25°C Thermal Resistance, Junction–to–Case Thermal Resistance, Junction–to–Air PD R θJC R θJA PD R θJC R θJA PD R θJC R θJA Internally Limted 5.0 87 Internally Limited 22 140 Internally Limited 15 245 W °C/W °C/W W °C/W °C/W W °C/W °C/W Operating Junction Temperature Range TJ 0 to +150 °C Storage Temperature Tstg – 55 to +150 °C ELECTRICAL CHARACTERISTICS (Vin = 4.25 V, CO = 10 µF, for typical values TJ = 25°C, for min/max values TJ = 0°C to +125°C, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit Output Voltage (TJ = 25°C, IO = 0 mA) Output Voltage, over Line, Load, and Temperature (Vin = 3.9 V to 15 V, IO = 0 mA to 490 mA) VO 2.81 2.76 2.85 2.85 2.89 2.93 V Line Regulation (Vin = 4.25 V to 15 V, IO = 0 mA, TJ = 25°C) Regline — — 0.3 % Load Regulation (IO = 0 mA to 800 mA, TJ = 25°C) Regload — — 0.5 % Dropout Voltage (IO = 490 mA) Vin –VO — 0.95 1.1 V Ripple Rejection (f = 120 Hz) RR 55 — — dB Maximum Output Current (Vin = 5.0 V) I(max) 800 — — mA Bias Current (Vin = 4.25 V, IO = 0 mA) IB — 5.0 to 3.0 8.0 mA Minimum Load Current to maintain Regulation (Vin = 15 V) IL(min) — — 0 mA IO, OUTPUT LOAD CURRENT (mA) Figure 1. Dropout Voltage versus Output Load Current 1.5 1.3 1.1 0.9 0.7 0.5 0 200 400 600 800 1000 Figure 2. Transient Load Regulation TJ = 25°C 20 ms/DIV Vin = 5.0 V CO = 10 µF TA = 25°C |
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