AN3302

Block diagram

Doc ID 18163 Rev 1

3/13

1

Block diagram

Figure 2.

Block diagram and reference circuit

Out1

FB1

SW2

FB2

SW3

FB3

GND

R1

R2

R3

R4

L3

L2

C5

C4

C6

V

OUT2

3.3V

V

OUT3

0.8V-0.94*Vin

V

IN_A

GND

SW1

L1

R5

EN

TX

Reset

V

OUT1

6.5V-14V

V

IN

C1

C3

C2

STODD01

GND

GND

Reset

V

IN_P

Reset

Step Down

Step Down

S-Wire

Step Up

AM07856v1

Out1

FB1

SW2

FB2

SW3

FB3

GND

R1

R2

R3

R4

L3

L2

C5

C4

C6

V

OUT2

3.3V

V

OUT3

0.8V-0.94*Vin

V

IN_A

GND

SW1

L1

R5

EN

TX

Reset

V

OUT1

6.5V-14V

V

IN

C1

C3

C2

STODD01

GND

GND

Reset

V

IN_P

Reset

Step Down

Step Down

S-Wire

Step Up

AM07856v1

Table 1.

Component

Manufacturer

Part number

Value

Size

C1, C2, C3

Murata

GRM21BR61A1O6KE19L

10 µF

0805

C4, C5, C6

Murata

GRM32ER61C226KE2OL

22 µF

1210

L1

Coilcraft

LPS6225-472MLB

4.7 µH

6 x 6 x 2.5

L2, L3

Coilcraft

LPS4O18-332MLB

3.3 µH

4.1 x 4.1 x 1.8

R1

33 k

Ω (V

(2)

0603

R2

3.3 k

Ω

0603

R3

27 k

Ω (V

(3)

0603

R4

47 k

Ω

0603

R5

100 k

Ω

(4)

0603

If the S-wire function Is not used, the TX pin must be connected to GND.

1.

Components listed above refer to a typical application. Operation of the STODD01 is not limited to the choice of these

external components.

2.

It is recommended to use resistors with values in the range of 1 k

Ω to 50 kΩ.

3.

It is recommended to use resistors with values in the range of 1 k

Ω to 50 kΩ.

4.

It is recommended to use resistors with values in the range of 100 k

Ω to 1 MΩ.