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UC2871N 数据表(PDF) 2 Page - Texas Instruments |
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UC2871N 数据表(HTML) 2 Page - Texas Instruments |
2 / 14 page PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Reference Section Output Voltage TJ=25 °C 2.963 3.000 3.037 V Overtemp 2.940 3.000 3.060 V Line Regulation VCC = 4.75V to 18V 10 mV Load Regulation Io=0 to -5mA 10 mV Oscillator Section Free Running Freq TJ=25 °C 576878 kHz Max Sync Frequency TJ=25 °C 160 200 240 kHz Charge Current VCT = 1.5V 180 200 220 µA Voltage Stability 2% Temperature Stability 48 % Zero Detect Threshold 0.46 0.5 0.56 V Error Amp 1 Section Input Voltage VO = 2V 1.445 1.475 1.505 V Input Bias Current -0.4 -2 µA Open Loop Gain VO = 0.5 to 3V 65 90 dB Output High VEA(-) = 1.3V 3.1 3.5 3.9 V Output Low VEA(-) = 1.7V 0.1 0.2 V Output Source Current VEA(-) = 1.3V, Vo = 2V -350 -500 µA Output Sink Current VEA(-) = 1.7V, Vo = 2V 10 20 mA Common Mode Range 0VIN-1V V Unity Gain Bandwidth TJ = 25 °C (Note 4) 1 MHz Maximum Source Impedance Note 5 100k Ω UC1871 UC2871 UC3871 ELECTRICAL CHARACTERISTICS Unless otherwise stated, these parameters apply for TA = -55°C to +125°C for the UC1871; -25 °C to +85°C for the UC2871; 0°C to +70°C for the UC3871; VCC = 5V, VC = 15V, VENABLE = 5V, CT = 1nF, Zero Det = 1V. ABSOLUTE MAXIMUM RATINGS Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to +10V VCC, VC Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +20V Zero Detect Input Current High Impedance Source . . . . . . . . . . . . . . . . . . +10mA Zero Detect Low Impedance Source. . . . . . . . . . . . . . . . . . . . . +20V Power Dissipation at TA = 25 °C . . . . . . . . . . . . . . . . . . . 1W Storage Temperature . . . . . . . . . . . . . . . . -65 °C to +150°C Lead Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 300 °C Note 1: Currents are positive into, negative out of the specified ter- minal. Note 2: Consult Packaging Section of Databook for thermal limitations and considerations of package. DIL-18, SOIC-18 (TOP VIEW) J or N, DW Package PACKAGE PIN FUNCTION FUNCTION PIN Gnd 1 B Out 2 A Out 3 VC 4 E/A 1 Comp 5 SS 6 E/A 1(-) 7 N/C 8 CT 9 Zero Detect 10 N/C 11 VREF 12 E/A 2(+) 13 E/A 2(-) 14 E/A 2 Comp 15 VCC 16 Enable 17 Flyback ISENSE 18 D Out 19 C Out 20 PLCC-20 (Top View) Q Package CONNECTION DIAGRAMS 2 |
类似零件编号 - UC2871N |
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类似说明 - UC2871N |
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