UC1707, UC2707, UC3707

SIMPLIFIED INTERNAL CIRCUITRY (continued)

UG1707 SHUTDOWN TRUTH TABLE

ANALOG STOP

PREVIOUS STATE OF

SHUTDOWN

LATCH DISABLE

OUTPUT

LOGIC

OUTPUT

X

0

X

X

Follows Input Logic

X

1

X

X

Low (Shutdown)

1

Open

X

X

Low (Shutdown)

0

Open

0

Shutdown

0

Open

0

Normal

Follows Input Logic

0

Open

1

X

Follows Input Logic

(1)

If the output was previously in Shutdown and Latch Disable was low and stays low, then even if the Analog Stop Logic is changed or the

Shutdown pin is open, the outputs will remain in Shutdown.

Figure 5. Transformer Coupled Push-Pull MOSFET Drive Circuit

Figure 6. Current Limiting

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Product Folder Link(s): UC1707 UC2707 UC3707