1

2

3

IN

GND

OUT

GND

4

13

TPS7B6933, TPS7B6950

www.ti.com

SLVSDI2 – APRIL 2016

Product Folder Links: TPS7B6933 TPS7B6950

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Copyright © 2016, Texas Instruments Incorporated

9 Power Supply Recommendations

The device is designed to operate from an input-voltage supply range between 4 V and 40 V. This input supply

must be well regulated. If the input supply is located more than a few inches from the TPS7B69xx device, TI

recommends adding an electrolytic capacitor with a value of 10 µF and a ceramic bypass capacitor at the input.

10 Layout

10.1 Layout Guidelines

For the layout of TPS7B69xx family of devices, place the input and output capacitors near the devices as shown

in Figure 21 and Figure 22. To enhance the thermal performance, TI recommends surrounding the device with

some vias.

Minimize equivalent series inductance (ESL) and ESR to maximize performance and ensure stability. Place

every capacitor as close as possible to the device and on the same side of the PCB as the regulator.

Do not place any of the capacitors on the opposite side of the PCB from where the regulator is installed. TI

strongly discourages the use of long traces because they can impact system performance negatively and even

cause instability.

If possible, and to ensure the maximum performance specified in this product data sheet, use the same layout

pattern used for the TPS7B69xx evaluation board.

10.2 Layout Example

Figure 21. Layout Example for SOT-223 Package