Thermal

Shutdown

Current

Limit

UVLO

Bandgap

IN

EN

OUT

LOGIC

GND

TLV707xxP

120 W

TLV707, TLV707P

SBVS153D – FEBRUARY 2011 – REVISED JANUARY 2015

www.ti.com

Functional Block Diagrams (continued)

Figure 58. TLV707xxP Block Diagram

8.3 Feature Description

This LDO regulator offers current limit and thermal protection. The operating junction temperature of this device

is –40°C to 125°C.

8.3.1 Internal Current Limit

The internal current limit helps to protect the regulator during fault conditions. During current limit, the output

sources a fixed amount of current that is largely independent of the output voltage. In such a case, the output

thermal shutdown is triggered and the device turns off. When the device cools, the internal thermal shutdown

circuit turns the device back on. If the fault condition continues, the device cycles between current limit and

thermal shutdown. See Thermal Information for more details.

The PMOS pass element has a built-in body diode that conducts current when the voltage at OUT exceeds the

voltage at IN. This current is not limited, so if extended reverse voltage operation is anticipated, external limiting

to 5% of the rated output current is recommended.

18

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