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LM78 Datasheet(PDF) 5 Page - National Semiconductor (TI) |
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LM78 Datasheet(HTML) 5 Page - National Semiconductor (TI) |
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5 / 31 page  Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Positive Supply Voltage (V CC) 6.5V Voltage on Any Input or Output Pin −0.3V to (V CC+0.3V) Ground Difference (GNDD–GNDA) ±300 mV Input Current at any Pin (Note 3) ±5mA Package Input Current (Note 3) ±20 mA Maximum Junction Temperature (T J max) 150˚C ESD Susceptibility(Note 5) Human Body Model 2000V Machine Model 175V Soldering Information PQFP Package (Note 6) : Vapor Phase (60 seconds) 215˚C Infrared (15 seconds) 220˚C Storage Temperature −65˚C to +150˚C Operating Ratings(Notes 1, 2) Operating Temperature Range T MIN ≤ TA ≤ TMAX LM78 −55˚C ≤ T A ≤ +125˚C Specified Temperature Range T MIN ≤ TA ≤ TMAX LM78 −10˚C ≤ T A ≤ +100˚C Junction to Ambient Thermal Resistance ( θ JA(Note 4) ) NS Package ID: VGZ44A 62˚C/W Supply Voltage (V CC) +4.25V to +5.75V Ground Difference (IGNDD–GNDAI) ≤100 mV V IN Voltage Range −0.05V to V CC + 0.05V DC Electrical Characteristics(Note 7) The following specifications apply for +4.25 V DC ≤VCC ≤ +5.75 VDC,fSYSCLK = 8.33 MHz, RS =25Ω, unless otherwise speci- fied. Boldface limits apply for T A =TJ =TMIN to TMAX; all other limits TA =TJ = 25˚C. Symbol Parameter Conditions Typical Limits Units (Note 8) (Note 9) (Limits) POWER SUPPLY CHARACTERISTICS I CC Supply Current Interface Inactive 1.0 2 mA (max) Shutdown Mode 10 µA TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS Accuracy −10˚C ≤ T A ≤ +100˚C ±3 ˚C (max) Resolution 1 ˚C (min) ANALOG-TO-DIGITAL CONVERTER CHARACTERISTICS Resolution (8 bits with full-scale at 4.096V) 16 mV TUE Total Unadjusted Error (Note 10) ±1 % (max) DNL Differential Non-Linearity ±1 LSB PSS Power Supply Sensitivity ±1 %/V t C Total Monitoring Cycle Time (Note 11) 1.0 1.5 sec (max) OP AMP CHARACTERISTICS Output Current (Sourcing) 50 µA Input Offset Voltage I OUT =50 µA ±1mV Input Bias Current ±0.1 nA PSRR 60 dB DC Open Loop Gain 70 dB Gain Bandwidth Product 500 kHz MULTIPLEXER/ADC INPUT CHARACTERISTICS On Resistance 400 2000 Ω (max) Off Channel Leakage Current ±0.1 nA Input Current (On Channel Leakage Current) ±0.1 nA FAN RPM-TO-DIGITAL CONVERTER Accuracy +25˚C ≤ T A ≤ +75˚C ±10 % (max) −10˚C ≤ T A ≤ +100˚C ±15 % (max) Full-scale Count 255 (max) www.national.com 5 |
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