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UC3725 датащи(PDF) 2 Page - Texas Instruments |
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UC3725 датащи(HTML) 2 Page - Texas Instruments |
2 / 5 page CONNECTION DIAGRAMS DIL-8 (Top View) J Or N Package UC1725 UC2725 UC3725 PACKAGE PIN FUNCTION FUNCTION PIN N/C 1 ISENSE 2 N/C 3-5 Timing 6 Enable 7 N/C 8-9 Input A 11 N/C 12-14 Input B 15 Gnd 16 VCC 17 N/C 18-19 Output 20 PLCC-20 (Top View) Q Package ABSOLUTE MAXIMUM RATINGS Supply Voltage (pin 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Power inputs (pins 7 & 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Output current, source or sink (pin 2) DC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A Pulse (0.5 us) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0A Enable and Current limit inputs (pins 4 & 6). . . . . . . . -0.3 to 6V Power Dissipation at TA ≤ 25°C (DIL-8) . . . . . . . . . . . . . . . . 1W Power Dissipation at TA ≤ 25°C (SO-14) . . . . . . . . . . . . 725mW Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . 300°C Note 1: Unless otherwise indicated, voltages are referenced to ground and currents are positive into, negative out of, the speci- fied terminals (pin numbers refer to DIL-8 package). Note 2: See Unitrode Integrated Circuits databook for information regarding thermal specifications and limitations of packages. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS POWER INPUT SECTION (PINS 7 & 8) Forward Diode Drop, Schottky Rectifier IF = 50ma .55 .7 V IF = 500ma 1.1 1.5 V CURRENT LIMIT SECTION (PIN 4) Input bias current VPIN4 = OV -1 -10 µA Threshold voltage 0.4 0.5 0.6 V Delay to outputs VPIN4 = 0 to 1V 100 250 ns TIMING SECTION (PIN 5) Output Off Time 27 30 33 µs Upper Mono Threshold 6.3 7.0 7.7 V Lower Mono Threshold 1.9 2.0 2.3 V HYSTERESIS AMPLIFIER (PINS 7 & 8) Input Open Circuit Voltage Inputs (pins 7 & 8), Open Circuited, TA= 25°C 7.0 Vcc/2 8.0 V Input Impedance TA = 25°C 23 28 33 k Ω Hysteresis 26.5 2*Vcc 30.5 V Delay to Outputs VPIN7 - VPIN8 = VCC + 1V 100 300 ns ELECTRICAL CHARACTERISTICS: (Unless otherwise stated, these specifications apply for -55°C≤TA≤+125°C for UC1725; -25 °C≤TA≤+85°C for UC2725; 0°C≤TA≤+70°C for UC3725; VCC (pin 3) = 0 to 15V, RT=10k, CT=2.2nf, TA =TJ, pin numbers refer to DIL-8 package.) SOIC-16 (Top View) DW Package DIL-16 (Top View) JE Or NE Package 2 |
Аналогичный номер детали - UC3725 |
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Аналогичное описание - UC3725 |
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