L6997S

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Table 13. Component list

The component list is shared in two sections: the first for the general-purpose component, the second for

power section:

Part name

Value

Dimension

Notes

GENERAL-PURPOSE SECTION

RESISTOR

R1

N.M.

0603

Output resistor divider for the linear regulator.

R2

N.M.

0603

R3

560k

Ω

0603

Input resistor divider (To set switching frequency)

R4

5.6k

Ω

0603

R5

47

Ω

0603

R6, R7, R11, R12

33k

Ω

0603

R8

62k

Ω

0603

Current limit resistor (To set current limit)

R9

2.7k

Ω

0603

Output resistor divider (To set output voltage)

R10

1.3k

Ω

0603

R13

220

Ω

0603

CAPACITOR

C1

220nF

0805

C2

47µF

KEMET-16V

C3

220nF

0805

C4

150pF

0603

First integrator capacitor

C5

47pF

0603

C6

10nF

0603

C7

N.M.

0603

Second integrator capacitor

C19

220nF

0805

C20

220nF

0603

Softstart capacitor

C21

47pF

0603

C22

220nF

0805

C23

0603

N.M.

C24

1nF

0603

C25

1

µFTantalum

DIODES

D1

BAT54

25V

POWER SECTION

OUTPUT CAPACITORS

C11-C12

2X680

µF

T510x687(1)004AS

KEMET

Output capacitor C8, C9, C10 N.M.

INPUT CAPACITORS

C13, C14, C16, C17,

C15 C18

100

µF

ECJ5YF0J1072

PANASONIC

Input capacitor

47

µF

ECJ5YF1A4767

PANASONIC

INDUCTOR

L1

1.8

µH

ETQF6F1R8BFA

PANASONIC

POWER MOS

Q1,Q2

SI4442DY

VISHAY Siliconix

Q3 N.M.

Q5,Q6

SI4442DY

VISHAY Siliconix

Q4 N.M.

INTEGRATED CIRCUIT

U1

L6997S