TDA1553 데이터 시트보기 (PDF) - Philips Electronics

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TDA1553

2×22 W stereo BTL car radio power amplifier with loudspeaker protection and 3-state mode switch

Philips Electronics 

Philips Semiconductors

2 × 22 W stereo BTL car radio power amplifier with

loudspeaker protection and 3-state mode switch

Product specification

TDA1553CQ

PINNING

SYMBOL

IN1

GND(S)

VP1

OUT1A

GND1

OUT1B

OUT2A

GND2

OUT2B

VP2

MODE

LSP

IN2

PIN

DESCRIPTION

1

input 1

2

signal ground

3

supply voltage

4

output 1A

5

power ground 1

6

output 1B

7

output 2A

8

power ground 2

9

output 2B

10

supply voltage

11

mode switch input

12

loudspeaker protection

13

input 2

handbook, halfpage

IN1 1

GND(S) 2

VP1 3

OUT1A 4

GND1 5

OUT1B 6

OUT2A 7 TDA1553CQ

GND2 8

OUT2B 9

VP2 10

MODE 11

LSP 12

IN2 13

MBC993

FUNCTIONAL DESCRIPTION

The TDA1553CQ contains two identical amplifiers with

differential input stages and can be used for bridge

applications. The gain of each amplifier is fixed at 26 dB.

Special features of the device are:

3-state mode switch

• standby: low supply current (<100 µA)

• mute: input signal suppressed

• operating: normal on condition.

Loudspeaker protection

When a short-circuit to ground occurs, which forces a DC

voltage across the loudspeaker of ≥1 V, a built-in

protection circuit becomes active and limits the DC voltage

across the loudspeaker to ≤1 V.

Pin 12 detects the status of the protection circuit (e.g. for

diagnostic purposes).

Short-circuit protection

If any output is short-circuited to ground during the standby

mode, it becomes impossible to switch the circuit to the

mute or operating condition. In this event the supply

current will be limited to a few milliamps.

Fig.2 Pin configuration.

1995 Dec 15

4

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