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UC3825A датащи(PDF) 2 Page - Texas Instruments |
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UC3825A датащи(HTML) 2 Page - Texas Instruments |
2 / 9 page 2 The UC3825A,B has dual alternating outputs and the same pin configuration of the UC3825. The UC3823A,B outputs op- erate in phase with duty cycles from zero to less than 100%. The pin configuration of the UC3823A,B is the same as the UC3823 except pin 11 is now an output pin instead of the ref- erence pin to the current limit comparator. “A” version parts have UVLO thresholds identical to the original UC3823/25. The “B” versions have UVLO thresholds of 16 and 10V, in- tended for ease of use in off-line applications. Consult Application Note U-128 for detailed technical and ap- plications information. Contact the factory for further pack- aging and availability information. UC1823A,B/1825A,B UC2823A,B/2825A,B UC3823A,B/3825A,B CONNECTION DIAGRAMS Supply Voltage (VC, VCC) ....................................................22V Output Current, Source or Sink (Pins OUTA, OUTB) DC ..................................................................................0.5A Pulse (0.5 µs) ...................................................................2.2A Power Ground (PGND) ...................................................... ±0.2V Analog Inputs (INV, NI, RAMP)................................................... −0.3V to 7V (ILIM, SS)............................................................. −0.3V to 6V Clock Output Current (CLK/LEB) ....................................... −5mA Error Amplifier Output Current (EAOUT)..............................5mA Soft Start Sink Current (SS) ...............................................20mA Oscillator Charging Current (RT)........................................ −5mA Power Dissipation at TA = 60°C..............................................1W Storage Temperature Range ............................ −65°C to +150°C Junction Temperature....................................... −55°C to +150°C Lead Temperature (Soldering, 10 sec.) .............................300 °C All currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages. DIL-16, SOIC-16, (Top View) J or N Package; DW Package PLCC-20, LCC-20, (Top View) Q, L Packages Device UVLO DMAX UC3823A 9.2V/8.4V < 100% UC3823B 16V/10V < 100% UC3825A 9.2V/8.4V < 50% UC3825B 16V/10V < 50% DESCRIPTION (cont.) ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for TA = −55°C to +125°C for the UC1823A,B and UC1825A,B; −40°C to +85°C for the UC2823A,B and UC2825A,B; 0°C to +70°C for the UC3823A,B and UC3825A,B; RT = 3.65k, CT = 1nF, VCC = 12V, TA = TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Reference Section Output Voltage TJ = 25°C, Io = 1mA 5.05 5.1 5.15 V Line Regulation 12 < VCC < 20V 2 15 mV Load Regulation 1mA < Io < 10mA 5 20 mV Total Output Variation Line, Load, Temp 5.03 5.17 V Temperature Stability TMIN < TA < TMAX (Note 1) 0.2 0.4 mV/ °C Output Noise Voltage 10Hz < f < 10kHz (Note 1) 50 µVRMS Long Term Stability TJ = 125°C, 1000 hours (Note 1) 5 25 mV Short Circuit Current VREF = 0V 30 60 90 mA |
Аналогичный номер детали - UC3825A |
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Аналогичное описание - UC3825A |
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