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MAX5095BAUA+ Datasheet(PDF) 10 Page - Maxim Integrated Products |
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MAX5095BAUA+ Datasheet(HTML) 10 Page - Maxim Integrated Products |
10 / 22 page High-Performance, Single-Ended, Current-Mode PWM Controllers 10 ______________________________________________________________________________________ Pin Descriptions (continued) PIN MAX5095A/ MAX5095B MAX5095C NAME FUNCTION 1 1 COMP Current Limit/PWM Comparator Input. COMP is level-shifted and connected to the inverting input of the PWM comparator. Pull up COMP to REF through a resistor and connect an optocoupler from COMP to GND for proper operation. 2 — SYNC Bidirectional Synchronization Input. When synchronizing with other MAX5095A/MAX5095Bs, the higher frequency part synchronizes all other devices. —2 ADV_CLK Advance Clock Output. ADV_CLK is an 85ns clock output pulse preceding the rising edge of OUT (see Figure 4). Use the pulse to drive the secondary-side synchronous rectifiers through a pulse transformer or an optocoupler (see Figure 8). 33 CS PWM Comparator/Overcurrent Protection Comparator Input. The current-sense signal is compared to the level shifted voltage at COMP. 44 RT/CT Timing Resistor/Capacitor Connection. A resistor RT from RT/CT to REF and capacitor CT from RT/CT to GND set the oscillator frequency. 5 5 GND Power-Supply Ground. Place the VCC and REF bypass capacitors close to the IC to minimize ground loops. 6 6 OUT MOSFET Driver Output. OUT connects to the gate of the external n-channel MOSFET. 77 VCC Power-Supply Input. Bypass VCC to GND with a 0.1µF ceramic capacitor or a parallel combination of a 0.1µF and a higher value ceramic capacitor. 8 8 REF 5V Reference Output. Bypass REF to GND with a 0.1µF ceramic capacitor or a parallel combination of a 0.1µF and a higher value ceramic capacitor no larger than 4.7µF. MAX5095_ |
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