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KTZ8866

January 2022 - Revision 04b

Page 36 of 37

Company Confidential

Table 28. Recommended Inductor Part Numbers

Value

(µH)

Manufacturer

Inductor

Part Number

DCR

(Ω)

Saturation Current

(A)

EIA Size

(mm)

2.2

Toko

DFE201612P-2R2M

0.12

2.1

2 x 1.6 x 1.0

2.2

CYCTEC

HMLQ25201T-2R2MSR

0.102

3

2.5 x 2.0 x 1.0

Recommended PCB Layout

PCB layout is very important for high frequency switching regulators in order to keep the loop stable and minimize

noise. The input capacitor (CIN

) should be very close to the IC’s VIN pin and PGND pin in order to get the best

decoupling. The path between the inductor, LX pin, schottky diode and the output capacitor (COUT) should be

kept as short as possible to minimize noise and ringing. To reduce power loss, the trace through the inductor,

LX pin, schottky diode and COUT

should be as short and wide as possible. Both input and output capacitors’ GND

terminals should be connected together on the PCB top layer and on the bottom layer GND plane.

Figure 8. Recommended PCB Layout