TDF8599BTH datasheet(29/54 Pages) NXP

29 / 54 page

TDF8599B_1

Product data sheet

Rev. 01 — 29 July 2009

29 of 54

NXP Semiconductors

TDF8599B

I2C-bus controlled dual channel class-D power ampliﬁer

Diagnostic output

THDclip

total harmonic distortion clip

detection level

0.2

Vth(offset)

threshold voltage for offset

detection

[2][3] 123V

VOL

LOW-level output voltage

DIAG or CLIP pins activated;

Io =1mA

0.3

leakage current

DIAG and CLIP pins; diagnostic

not activated

--50

µA

Audio inputs; pins IN1N, IN1P, IN2N and IN2P

input voltage

2.45

SVRR voltage and ACGND input bias voltage in Mute and Operating modes

Vref

reference voltage

input ACGND pin

2.45

half supply reference SVRR pin

6.9

7.2

7.5

Ampliﬁer outputs; pins OUT1N, OUT1P, OUT2N and OUT2P

VO(offset)

output offset voltage

BTL; Mute mode

BTL; Operating mode

[4][6] --70

Stabilizer output; pins VSTAB1 and VSTAB2

output voltage

stabilizer output in Mute mode and

Operating mode

1012V

Voltage protections

V(prot)

protection voltage

undervoltage; ampliﬁer is muted

6.8

7.2

overvoltage; load dump protection

is activated

26.2

VP that a POR occurs at

3.7

4.6

Current protection

IO(ocp)

overcurrent protection output

current

current limiting concept

9.5

Temperature protection

Tprot

protection temperature

155

160

°C

Tact(th_fold)

thermal foldback activation

temperature

gain =

−1 dB

140

150

°C

Tj(AV)(warn1)

average junction temperature

for pre-warning 1

IB2[D3] = 0; non-I2C-bus mode

140

150

°C

Tj(AV)(warn2)

average junction temperature

for pre-warning 2

IB2[D3] = 1

120

130

°C

DC load detection levels: I2C-bus mode only[7]

Zth(load)

load detection threshold

impedance

for normal speaker load;

DB1[D4] = 0; DB2[D4] = 0

--25

Ω

Zth(open)

open load detection threshold

impedance

DB1[D4] = 1; DB2[D4] = 1

350

Ω

AC load detection levels: I2C-bus mode only

Ith(o)det(load)AC

AC load detection output

threshold current

250

500

700

Table 19.

Static characteristics …continued

VP =VDDA = 14.4 V; fosc = 320 kHz; −40 °C < Tamb < +85 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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