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ML4811CP Scheda tecnica(PDF) 2 Page - Micro Linear Corporation |
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ML4811CP Scheda tecnica(HTML) 2 Page - Micro Linear Corporation |
2 / 12 page ML4810, ML4811 2 PIN CONFIGURATION ML4810 16-Pin DIP (P16) 16-Pin SOIC (S16W) PIN NAME FUNCTION PIN NAME FUNCTION 1 INV Inverting input to error amp. 2 NI Non-inverting input to error amp. 3 E/A OUT Output of error amplifier and input to main comparator. 4RCRESET Timing elements for Integrating Soft Start reset. 5 CLOCK Oscillator output. 6RT Timing resistor for oscillator — sets charging current for oscillator timing capacitor (pin 6). 7CT Timing capacitor for oscillator. 8 RAMP Non-inverting input to main comparator. Connected to CT for voltage mode operation or to current sense resistor for current mode. 9 SOFT START Normally connected to Soft Start capacitor. 10 SYNC A high going pulse terminates the PWM cycle and discharges CT. PIN DESCRIPTION 11 OVP Exceeding 2.5V terminates the PWM cycle and inhibits the outputs. 12 ILIM/S.D. Current limit sense pin. Normally connected to current sense resistor. 13 GND Analog signal ground. 14 OUTA High current totem pole output. This output is the first one energized after power on reset. 15 PWR GND Return for the high current totem pole outputs. 16 VC Positive supply for the high current totem pole outputs. 17 OUTB High current totem pole output. 18 VCC Positive supply for the IC. 19 5.1V REF Buffered output for the 5.1V voltage reference. 20 RESET DELAY Timing capacitor to determine the amount of delay between fault. TOP VIEW INV NI E/A OUT RCRESET RT CT RAMP SOFT START 5.1V REF VCC OUTB POWER VC PWR GND OUTA GND ILIM/S.D. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 ML4811 20-Pin DIP (P20) 20-Pin SOIC (S20) INV NI E/A OUT RCRESET CLOCK RT CT RAMP SOFT START SYNC RESET DELAY 5.1V REF VCC OUTB POWER VC PWR GND OUTA GND ILIM/S.D. OVP 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 TOP VIEW |
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