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CS8147YT5 Datasheet(PDF) 5 Page - Cherry Semiconductor Corporation |
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CS8147YT5 Datasheet(HTML) 5 Page - Cherry Semiconductor Corporation |
5 / 8 page 5 Definition of Terms Typical Circuit Waveform Test & Applications Circuit Dropout Voltage: The input-output voltage differential at which the circuit ceases to regulate against further reduction in input voltage. Measured when the output voltage has dropped 100mV from the nominal value obtained at 14V input, dropout voltage is dependent upon load current and junction temperature. Current Limit: Peak current that can be delivered to the output. Input Voltage: The DC voltage applied to the input terminals with respect to ground. Input Output Differential: The voltage difference between the unregulated input voltage and the regulated output voltage for which the regulator will operate. Line Regulation: The change in output voltage for a change in the input voltage. The measurement is made under conditions of low dissipation or by using pulse tech- niques such that the average chip temperature is not significantly affected. Load Regulation: The change in output voltage for a change in load current at constant chip temperature. Long Term Stability: Output voltage stability under accelerated life-test conditions after 1000 hours with maximum rated voltage and junction temperature. Output Noise Voltage: The rms AC voltage at the output, with constant load and no input ripple, measured over a specified frequency range. Quiescent Current: The part of the positive input current that does not contribute to the positive load current. The regulator ground lead current. Ripple Rejection: The ratio of the peak-to-peak input ripple voltage to the peak-to-peak output ripple voltage. Temperature Stability of VOUT: The percentage change in out- put voltage for a thermal variation from room tempera- ture to either temperature extreme. VIN ENABLE VOUT1 System Condition 60V 5V 5V 10V 0V Turn On Load Dump Low VIN Line Noise, Etc. VOUT Short Circuit Thermal Shutdown Turn Off 5V 0V 14V 5V 2.0V 0.8V 14V 26V 31V 10V 10V 10V 10V 0V VOUT2 0V 0V 0V 0V 5V 3V 5V 5V 0V CS8147 C1* 0.1 mF ENABLE VIN VOUT1 Gnd VOUT2 C2** 10 mF 10V 5V Control DISPLAY Tuner IC * C1 is required if the regulator is located away from the power source filter. **C2 is required for stability. |
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