LV5681P

No.A1902-9/14

Recommended Operation Circuit

Peripheral parts list

Name of part

Description

Recommended value

Remarks

C1

Power supply bypass capacitor

100

μF or more

C2

Oscillation prevention capacitor

0.22

μF or more

These capacitors must be placed near

the VCC and GND pins.

C3

EXT output stabilization capacitor

2.2

μF or more

C4

ANT output stabilization capacitor

2.2

μF or more

C5, C57 C9, C11

Output stabilization capacitor

4.7

μF or more

Electrolytic capacitor *

C6, C8, C10, C12

Output stabilization capacitor

0.22

μF or more

Ceramic capacitor *

R1,R2

Resistor for ILM voltage adjustment

R1/R2

:30k

Ω/5.6kΩ = 8.0V

:27k

Ω/3.9kΩ = 10.0V

:33k

Ω/3.9kΩ = 11.9V

A resistor with resistance accuracy as

low as less than

±1% must be used.

R3, R4

Resistor for AUDIO voltage setting

R3/R4

:30k

Ω/5.6kΩ = 8.0V

:27k

Ω/4.7kΩ = 8.5V

:24k

Ω/3.9kΩ = 9.0V

A resistor with resistance accuracy as

low as less than

±1% must be used.

D1, D2, D3, D4

Diode for internal device breakdown protection

* : In order to stabilize the regulator outputs, it is recommended that the electrolytic capacitor and ceramic capacitor be connected in parallel.

Furthermore, the values listed above do not guarantee stabilization during the overcurrent protection operations of the regulator, so oscillation may occur

during an overcurrent protection operation.

+

+

14

12

10

8

6

4

2

15

13

11

9

7

5

3

1

+

C5

C6

ILM

+

C11 C12

R4

CD

CTRL2

CTRL1

ACC ACC5.7V

SW5.7V

R1

R3

+

C11

D4

C4

C3

D3

D2

D1

C12

VDD5.7V

ANT

EXT

+

C7

C8

AUDIO

+

C1

C2

VCC

R2