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UC2856 Fiches technique(PDF) 2 Page - Texas Instruments |
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UC2856 Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 9 page 2 UC1856 UC2856 UC3856 ABSOLUTE MAXIMUM RATINGS Supply Voltage .................................................................... +40V Collector Supply Voltage ..................................................... +40V Output Current, Source or Sink DC...................................................................................0.5A Pulse (0.5 µs)...................................................................2.0A Error Amp Inputs.................................................... −0.3V to +VIN Shutdown Input..................................................... −0.3V to +10V Current Sense Inputs.............................................. −0.3V to +3V SYNC Output Current ......................................................±10mA Error Amplifier Output Current ........................................... −5mA Soft Start Sink Current.......................................................50mA Oscillator Charging Current .................................................5mA Power Dissipation at TA = 25°C (Note 2).......................1000mW Power Dissipation at TC = 25°C (Note 2) ......................2000mW Junction Temperature ....................................... −55°C to +150°C Storage Temperature Range ............................ −65°C to +150°C Lead Temperature (Soldering, 10 sec.) ........................... +300°C All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. Consult packaging section of databook for thermal limitations and considerations of package. CONNECTION DIAGRAMS DIL–16, SOIC-16 (Top View) J or N, DW PACKAGE PLCC-20 (Top View) Q PACKAGE PLCC-28 (Top View) QP PACKAGE ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for TA = −55°C to +125°C for UC1856; − 40°C to +85°C for the UC2856; and 0°C to +70°C for the UC3856, VIN = 15V, RT = 10k, CT = 1nF, TA = TJ. UC1856/UC2856 UC3856 PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Reference Section Output Voltage TJ = 25°C, Io = 1mA 5.05 5.10 5.15 5.00 5.10 5.20 V Line Regulation VIN = 8V to 40V 20 20 mV Load Regulation Io =−1mA to −10mA 15 15 mV Total Output Variation Line, Load, and Temperature 5.00 5.20 4.95 5.25 V Output Noise Voltage 10Hz < f < 10kHz, TJ = 25°C 50 50 µV Long Term Stability TJ = 125°C, 1000 Hrs (Note 2) 5 25 5 25 mV Short Circuit Current VREF = 0V −25 −45 −65 −25 −45 −65 mA Oscillator Section Initial Accuracy TJ = 25°C 180 200 220 180 200 220 kHz Over Operating Range 170 230 170 230 kHz |
Numéro de pièce similaire - UC2856 |
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Description similaire - UC2856 |
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