MAX5094BASA 查看數據表（PDF） - Maxim Integrated
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MAX5094BASA Datasheet PDF : 22 Pages
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High-Performance, Single-Ended, Current-Mode
PWM Controllers
Pin Descriptions (continued)
MAX5095_
PIN
MAX5095A/
MAX5095B
MAX5095C
1
1
2
—
NAME
FUNCTION
COMP
SYNC
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.
Bidirectional Synchronization Input. When synchronizing with other
MAX5095A/MAX5095Bs, the higher frequency part synchronizes all other devices.
Advance Clock Output. ADV_CLK is an 85ns clock output pulse preceding the rising
—
2
ADV_CLK 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).
3
3
CS
PWM Comparator/Overcurrent Protection Comparator Input. The current-sense signal is
compared to the level shifted voltage at COMP.
4
4
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.
7
7
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.
10 ______________________________________________________________________________________
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