ams Datasheet

Page 13

[v1-01] 2015-May-22

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AS1383 − External Component Selection

Figure 15:

Because ceramic capacitors lose a lot of their initial capacitance

at their maximum rated voltage, it is recommended that either

a higher input capacity or a capacitance with a higher rated

voltage is used.

Feedback Resistor Selection

Layout Recommendation

The high-speed operation of the AS1383 requires proper layout

for optimum performance. Figure 16 shows the recommended

component layout.

• A large ground pin copper area will help to lower the

device temperature.

• A multi-layer board with a separate ground plane is

recommended.

• Traces carrying large currents should be direct.

• Trace area at pin FB should be as small as is practical.

• The lead-length to the battery should be as short as is

practical.

Part Number

C

TC

Code

Voltage

Rating

Dimensions in

mm (L/W/H)

Manufacturer

GRM21BR61E475MA12

4.7μF

X5R

25V

2.0 x 1.2 x 1.25

www.murata.com

GRM219R61A106ME47

10μF

X5R

10V

2.0 x 1.2 x 1.25

www.murata.com

CL10A475KP8NNNC

4.7μF

X5R

10V

1.6 x 0.8 x 0.8mm

www.samsungsem.com

CL10A106KP8NNNC

10μF

X5R

10V

1.6 x 0.8 x 0.8mm

www.samsungsem.com