CTRL

10 ms (typ.)

EN

TPS65632

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SLVSCY2 – MARCH 2015

Figure 6. Start-Up Sequence

8.3.5 Enable (CTRL)

The CTRL pin serves two functions: one is to enable and disable the device, and the other is to program the

function is not required the CTRL pin can be used as a standard enable pin for the device, which will start up

CTRL is pulled low.

Note that to ensure proper start up CTRL must be pulled low for a minimum of 200 µs before being pulled high

again.

8.3.6 Undervoltage Lockout

The device features an undervoltage lockout function that disables it when the input supply voltage is too low for

proper operation.

8.3.7 Short-Circuit Protection

8.3.7.1 Short Circuits During Operation

device goes into shutdown and the outputs are disconnected from the input. This state is latched, and to resume

HIGH.

8.3.7.2 Short Circuits During Start Up

During start up an error condition is detected in the following cases:

•

•

•

whitespace

If any of the above conditions is met the device goes into shutdown and the outputs are disconnected from the

CTRL has to toggle LOW and HIGH.

8.3.8 Output Discharge During Shut Down

The device discharges outputs during shutdown. Figure 7 shows the discharge control.

Copyright © 2015, Texas Instruments Incorporated

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