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MAX5014 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX5014 Datasheet(HTML) 3 Page - Maxim Integrated Products |
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Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power Supplies _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VDD = 13V, a 10µF capacitor connects VCC to GND, VCS = 0, V+ = 48V, 0.1µF capacitor connected to SS_SHDN, NDRV = open cir- cuit, OPTO = GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS THERMAL SHUTDOWN Thermal Shutdown Temperature 150 °C Thermal Hysteresis 25 °C CURRENT LIMIT CS Threshold Voltage VILIM VOPTO = 4V 419 465 510 mV CS Input Bias Current 0 ≤ VCS ≤ 2V, VOPTO = 4V -1 1 µA Current Limit Comparator Propagation Delay 25mV overdrive on CS, VOPTO = 4V 180 ns CS Blanking Time VOPTO = 4V 70 ns OSCILLATOR Clock Frequency Range VOPTO = 4V 247 275 302 kHz MAX5014, VOPTO = 4V 75 85 Max Duty Cycle MAX5015, VOPTO = 4V 44 50 % SOFT-START SS Source Current ISSO VSS_SHDN = 0 2.0 4.6 6.5 µA SS Sink Current 1.0 mA Peak Soft-Start Voltage Clamp No external load 2.331 2.420 2.500 V VSS_SHDN falling 0.25 0.37 0.41 Shutdown Threshold VSS_SHDN rising 0.53 0.59 0.65 V Typical Operating Characteristics (V+ = 48V, VDD = 13V, NRDV is open circuit, TA = +25°C, unless otherwise noted.) 0.999 1.000 1.001 1.002 1.003 -40 0 -20 20 40 60 80 VSS_SHDN vs. TEMPERATURE (AT THE END OF SOFT-START) TEMPERATURE ( °C) OPTO = CS = GND 273 274 276 275 277 278 -40 0 -20 20 40 60 80 NDRV FREQUENCY vs. TEMPERATURE TEMPERATURE ( °C) VOPTO = 4V, CS = GND 80.4 80.6 80.5 80.8 80.7 80.9 81.0 -40 20 40 -20 0 60 80 MAX5014 MAXIMUM DUTY CYCLE vs. TEMPERATURE TEMPERATURE ( °C) VOPTO = 4V, CS = GND |
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