Datasheet

UC1707 , UC2707 , UC3707
www.ti.com ............................................................................................................................................. SLUS177B – MARCH 1999 – REVISED SEPTEMBER 2008
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
(1)
Latched 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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