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AS1343

Datasheet - A p p l i c a t i o n I n f o r m a t i o n

Capacitor Selection

mended. X5R and X7R ceramic capacitors are recommend as they retain capacitance over wide ranges of voltages

and temperatures.

Output Capacitor Selection

they have extremely low ESR and are available in small footprints. A 4.7 to 10µF output capacitor is sufficient for most

applications. Larger values up to 22µF may be used to obtain extremely low output voltage ripple and improve tran-

sient response. The rated voltage of the capacitor should not be lower than the output voltage.

Input Capacitor Selection

Low ESR input capacitors reduce input switching noise and reduce the peak current drawn from the battery. Ceramic

capacitors are recommended for input decoupling and should be located as close to the device as is practical. A 10µF

input capacitor is sufficient for most applications. Larger values may be used for a better stabilization of the supply volt-

age.

Table 5. Recommended Output Capacitors

Part Number

C

TC Code

Rated Voltage

Dimensions (L/W/T)

Manufacturer

GRM32DR71H335KA88B

3.3µF

X7R

50V

1210

Murata

www.murata.com

GRM32ER71H475KA88

4.7µF

X7R

50V

1210

GRM31CR61E106KA12

10µF

X5R

25V

1206

C3225X5R1H335K

3.3µF

X5R

50V

1210

TDK

www.tdk.com

C3216X5R1E475K

4.7µF

X5R

25V

1206

C3225X5R1E106K

10µF

X5R

25V

1210

Table 6. Recommended Input Capacitors

Part Number

C

TC Code Rated Voltage

Dimensions (L/W/T)

Manufacturer

GRM21BR60J106KE19

10µF

X5R

6.3V

0805

Murata

www.murata.com

GRM188R60J106ME47

10µF

X5R

6.3V

0603

GRM21BR60J226ME39

22µF

X5R

6.3V

0805

C1608X5R0J106MB

10µF

X5R

6.3V

0603

TDK

www.tdk.com

C2012X5R0J226M

22µF

X5R

6.3V

0805