OUT

OUT

FB

V

V

R1 = R2

1

= R2

1

V

0.8V

æ

ö

æ

ö

´

-

´

-

ç

÷

ç

÷

è

ø

è

ø

FB

FB

V

0.8 V

R2 =

=

160 k

I

5 A

»

OUT

FB

R1

R1

V

= V

1 +

= 0.8 V

1 +

R2

R2

æ

ö

æ

ö

´

´

ç

÷

ç

÷

è

ø

è

ø

TPS62095

www.ti.com

SLVSBD8A – APRIL 2014 – REVISED MAY 2014

8.2.1.2.3

Input and Output Capacitor Selection

For best output and input voltage filtering, low ESR ceramic capacitors are recommended. The input capacitor

minimizes input voltage ripple, suppresses input voltage spikes and provides a stable system rail for the device.

A 22µF or larger input capacitor is required. The output capacitor value can range from 2x22µF up to 150µF. The

recommended typical output capacitor value is 2x22µF and can vary over a wide range as outline in the output

filter selection table.

8.2.1.2.4

Setting the Output Voltage

The output voltage is set by an external resistor divider according to the following equations:

(8)

(9)

(10)

When sizing R2, in order to achieve low quiescent current and acceptable noise sensitivity, use a minimum of

5µA for the feedback current IFB. Larger currents through R2 improve noise sensitivity and output voltage

accuracy.

Copyright © 2014, Texas Instruments Incorporated

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