TDA1560Q 查看數據表（PDF） - Philips Electronics

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TDA1560Q

40 W car radio high power amplifier

Philips Electronics 

Philips Semiconductors

40 W car radio high power amplifier

Product specification

TDA1560Q

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL

VP

IOSM

IORM

VP(sc)

Ecap

I17

Ptot

Tstg

Tamb

PARAMETER

CONDITIONS

MIN.

supply voltage

operating

−

non-repetitive peak output current

non-operating

−

load dump protection; tr ≥ 2.5 ms −

−

repetitive peak output current

−

AC and DC short-circuit safe voltage

−

energy handling capability at outputs VP = 0

−

current at pin 17

V17 < VP − 1

−

total power dissipation

−

storage temperature

−55

operating ambient temperature

−40

MAX.

18

30

45

6

4

18

200

5

60

+150

−

UNIT

V

V

V

A

A

V

mJ

mA

W

°C

°C

THERMAL CHARACTERISTICS

SYMBOL

Rth j-a

Rth j-case

PARAMETER

thermal resistance from junction to ambient in free air

thermal resistance from junction to case (measured in Fig.6)

VALUE

40

3

UNIT

K/W

K/W

Heatsink design

There are two parameters that determine the size of the

heatsink. The first is the rating for the case temperature

and the second is the ambient temperature at which the

amplifier must still deliver its full power in the class-H

mode.

EXAMPLE 1

With an 8 Ω load and driven with a music signal, the

maximum power dissipation is approximately 6.5 W. If the

amplifier is to deliver its full power at ambient temperatures

up to 50 °C the case temperature should not be higher

than120 °C for class-H operation.

Rth case-h = 1 K/W, thus the external heatsink should be:

-1---2---0-6---.-–-5----5---0-- – 1.0 = 10 K/W

In this example and with an 8 Ω load, the size of the

heatsink is determined by the rating for the maximum full

power ambient temperature. If the case temperature of the

device exceeds 120 °C then the device switches back to

class-B, see “Example 2”.

EXAMPLE 2

With disabled class-H mode, an 8 Ω load and driven with

a sine wave signal the maximum power dissipation is

approximately 5 W. At a virtual junction temperature of

150 °C and Tamb(max) at 60 °C, Rth vj-case = 3 K/W and

Rth case-h = 1 K/W the thermal resistance of the heatsink

should be:

1----5---0---5--–-----6---0-- – 3 – 1 = 14 K/W

In this example the size of the heatsink is determined by

the virtual junction temperature.

1996 May 14

6

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