TDA8933T datasheet(9/47 Pages) NXP

Numer części	TDA8933T

Szczegółowy opis	Class-D audio amplifier

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Producent	NXP [NXP Semiconductors]

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TDA8933_1

Preliminary data sheet

Rev. 01 — 15 May 2007

9 of 47

NXP Semiconductors

TDA8933

Class-D audio ampliﬁer

(1)

Where:

fosc = oscillator frequency (Hz)

Rosc = oscillator resistor (Ω) (on pin OSCREF)

Table 5 summarizes how to conﬁgure the TDA8933 in master or slave conﬁguration.

8.4 Protections

The following protections are implemented in the TDA8933:

• Thermal Foldback (TF)

• OverTemperature Protection (OTP)

• OverCurrent Protection (OCP)

• Window Protection (WP)

• Supply voltage protections

– UnderVoltage Protection (UVP)

– OverVoltage Protection (OVP)

– UnBalance Protection (UBP)

• ElectroStatic Discharge (ESD)

The behavior of the device under the different fault conditions differs according to the

protection activated and is described in the following sections.

Fig 4.

Oscillation frequency as a function of Rosc

Table 5.

Master/slave conﬁguration

Conﬁguration

OSCREF

OSCIO

Master

Rosc > 25 kΩ to VSSD(HW)

output

Slave

Rosc = 0 Ω; shorted to VSSD(HW)

input

f

osc

12.45x10

9

R

osc

-------------------------

=

350

450

550

fosc

(kHz)

250

Rosc (k

Ω)

25

45

40

30

35

001aad758

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