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ML4818CP Scheda tecnica(PDF) 3 Page - Micro Linear Corporation |
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ML4818CP Scheda tecnica(HTML) 3 Page - Micro Linear Corporation |
3 / 12 page 3 ML4818 ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. VCC ........................................................................... 30V Output Driver Current, Source or Sink DC ....................................................................... 0.5A Pulse (0.5 µs) ........................................................ 1.5A Analog Inputs (CT, RAMP, ILIM, E/A OUT, INV, SOFT START, RCRESET) ............................... –0.3V to 6V CLOCK Output Current (RT) ....................................–5mA Error Amplifier Output Current (E/A OUT) ................ 5mA SOFT START Sink Current ..................................... 50 mA Oscillator Charging Current (CT) .............................–5mA Junction Temperature ............................................. 150 °C Storage Temperature Range ..................... –65 °C to 150°C Lead Temperature (Soldering 10 Sec)...................... 260 °C Thermal Resistance ( θJA) Plastic Power DIP ............................................ 40 °C/W Plastic SOIC ..................................................... 80 °C/W OPERATING CONDITIONS Operating Temperature Range ....................... 0 °C to 70°C ELECTRICAL CHARACTERISTICS Unless otherwise specified, VCC = 15V, RT = 12.7kΩ, CT = 250pF, RCLK = 3kΩ, RDELAY = 5kΩ, TA = Operating Temperature Range (Note 1). PARAMETER CONDITIONS MIN TYP. MAX UNITS OSCILLATOR Initial Accuracy TA = 25°C 410 450 525 kHz Voltage Stability 12V < VCC < 25V –0.3 %/V Temperature Stability 0.2 % Total Variation line, temp. 375 525 kHz CT Discharge Current VC T = 2V 4.7 5.5 6.3 mA Clock Out High 2.4 3.1 6 V Clock Out Low 0 0.4 V Ramp Peak 0 4.1 V Ramp Valley 1.5 5 V Ramp Valley to Peak 0 2.6 5 V REFERENCE Output Voltage TA = 25°C, IO = 1mA 4.95 5.0 5.05 V Line Regulation 12V < VCC < 25V –20 2 20 mV Load Regulation 1mA < IO < 10mA –20 3 20 mV Temperature Stability .2 mV/ °C Total Variation 4.85 5.15 V Output Noise Voltage 10Hz to 10kHz 50 mV Long Term Stability TJ = 125°C, 1000 hrs 5 25 mV Short Circuit Current VREF = 0V –20 –50 mA ERROR AMPLIFIER Input Offset Voltage –40 30 mV Input Bias Current –3 0.6 3 µA Input Offset Current 0.1 1 µA Open Loop Gain 1 < VO < 4V 70 75 dB PSRR 12 < VCC < 25V 65 80 dB |
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