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KA7908 Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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KA7908 Datasheet(HTML) 2 Page - Fairchild Semiconductor |
2 / 18 page KA79XX/KA79XXA 2 Absolute Maximum Ratings Note: 1. Thermal resistance test board Size: 76.2mm * 114.3mm * 1.6mm(1S0P) JEDEC standard: JESD51-3, JESD51-7 2. Assume no ambient airflow Electrical Characteristics (KA7905) (VI = -10V, IO = 500mA, 0 °C ≤ TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.) Note 3. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Value Unit Input Voltage VI -35 V Thermal Resistance Junction-Case (Note1) R θJC 5 °C/W Thermal Resistance Junction-Air (Note1, 2) R θJA 65 °C/W Operating Temperature Range TOPR 0 ~ +125 °C Storage Temperature Range TSTG - 65 ~ +150 °C Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VO TJ = +25 °C -4.8 -5.0 -5.2 V IO = 5mA to 1A, PO ≤15W VI = -7V to -20V -4.75 -5.0 -5.25 Line Regulation (Note3) ∆VO TJ = +25 °C VI = -7V to -25V - 35 100 mV VI = -8V to -12V - 8 50 Load Regulation (Note3) ∆VO TJ = +25 °C, IO = 5mA to 1.5A - 10 100 mV TJ =+25 °C, IO = 250mA to 750mA - 3 50 Quiescent Current IQ TJ =+25 °C- 3 6 mA Quiescent Current Change ∆IQ IO = 5mA to 1A - 0.05 0.5 mA VI = -8V to -25V - 0.1 0.8 Temperature Coefficient of VD ∆Vo/∆TIO = 5mA - -0.4 - mV/ °C Output Noise Voltage VN f = 10Hz to 100kHz, TA = +25 °C- 40 - µV Ripple Rejection RR f = 120Hz, ∆VI = 10V 54 60 - dB Dropout Voltage VD TJ =+25 °C, IO = 1A - 2 - V Short Circuit Current ISC TJ =+25 °C, VI = -35V - 300 - mA Peak Current IPK TJ =+25 °C- 2.2 - A |
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