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251

Regulator ICs

System power supply for car stereos

BA4900

The BA4900 is a single-chip power supply IC for use in car stereo audio systems. The IC contains one 5.8V output for

a microcontroller, three 8V outputs, one 10V output, and two outputs interlocked with BACKUP and ACC systems.

Applications

Car stereo audio systems

Features

1) All output circuits, except AMP and ANT circuits, use

a PNP transistor with a low saturation voltage.

2) Output current limit circuit prevents damage to the IC

in the event output is short-circuited.

3) Overvoltage protection circuit provides protection

against surges from the ACC or BACKUP inputs.

4) Compact 12-pin POWER package allows a large

power dissipation.

5) Thermal protection circuit prevents heat damage to

the IC.

Absolute maximum ratings (Ta = 25C)

Recommended operating conditions (Ta = 25C)

1 2 3 4 5 6 7 8 9 10

Regulator ICs 1
Regulator ICs BA4900 10

Resumo do Conteúdo

Página 1 - Regulator ICs

251Regulator ICsSystem power supply for car stereosBA4900The BA4900 is a single-chip power supply IC for use in car stereo audio systems. The IC conta

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External dimensions (Units: mm)260Regulator ICs BA4900Electrical characteristic curves

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252Regulator ICs BA4900Block diagramPin descriptions

Página 4

253Regulator ICs BA4900Input / output circuits

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254Regulator ICs BA4900Electrical characteristics (unless otherwise noted, Ta = 25C and VCC = 13.2V)

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255Regulator ICs BA4900

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256Regulator ICs BA4900Input / output timing chart

Página 8

257Regulator ICs BA4900FEstimate of allowable power dissipation.Except under transitional conditions, the power dissipation of this IC is 3W per unit

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258Regulator ICs BA4900Application example

Página 10 - Regulator ICs BA4900

259Regulator ICs BA4900Operation notes(1) Although the quality of this IC is rigorously con-trolled, the IC may be destroyed when supply voltage orop

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Rainbow-electronics BA4900 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Sensores Rainbow-electronics BA4900. Rainbow Electronics BA4900 User Manual Manual do Utilizador

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