Datasheet

TPS62260, TPS62261
TPS62262, TPS62263
www.ti.com SLVS763D –JUNE 2007– REVISED FEBRUARY 2011
Input Capacitor Selection
An input capacitor is required for best input voltage filtering, and minimizing the interference with other circuits
caused by high input voltage spikes. For most applications, a 4.7μF to 10μF ceramic capacitor is recommended.
Because ceramic capacitor loses up to 80% of its initial capacitance at 5 V, it is recommended that 10μF input
capacitors be used for input voltages > 4.5V. The input capacitor can be increased without any limit for better
input voltage filtering. Take care when using only small ceramic input capacitors. When a ceramic capacitor is
used at the input and the power is being supplied through long wires, such as from a wall adapter, a load step at
the output or VIN step on the input can induce ringing at the VIN pin. This ringing can couple to the output and
be mistaken as loop instability or could even damage the part by exceeding the maximum ratings.
Table 3. List of Capacitors
CAPACITANCE TYPE SIZE SUPPLIER
4.7μF GRM188R60J475K 0603 1.6x0.8x0.8mm
3
Murata
10μF GRM188R60J106M69D 0603 1.6x0.8x0.8mm
3
Murata
LAYOUT CONSIDERATIONS
Figure 39. Suggested Layout for Fixed Output Voltage Options
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