LV5681P Просмотр технического описания (PDF) - SANYO -> Panasonic

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производитель

LV5681P

For Car Audio Systems Multi-Power Supply System IC

SANYO -> Panasonic 

LV5681P

• AUDIO/ILM output voltage setting method

AUDIO

5

R1

AUDIO_F

4

1.26V

R2

The AUDIO_F voltage is determined by the

internal band gap voltage of the IC (typ = 1.26V).

Formula for AUDIO voltage calculation

AUDIO

=

1.26[V

R2

]

×

R1

+

1.26[V

]

R1 = (AUDIO −1.26)

R2

1.26

The circuit must be designed in such a way that the R1:R2 ratio

satisfies the formula given above for the AUDIO voltage that

has been set.

Example : AUDIO = 8.5V setting method

R1 = (8.5 −1.26) ≅ 5.75

R2

1.26

R1 = 27kΩ ≅ 5.74

R2 4.7kΩ

AUDIO = 1.26V × 5.74 +1.26V ≅ 8.49V

The ILM output voltage can be set by the above-mentioned method.

Note : In the above, the typical values are given in all instances for the values used and, as such, they will vary due to the

effects of production-related variations of the IC and external resistors.

No.A1902-10/14

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