TDA7263, 规格书,Datasheet 资料

TDA7263

12 +12W STEREO AMPLIFIER WITH MUTING

WIDE SUPPLY VOLTAGE RANGE HIGH OUTPUT POWER

12+12W @ V S =28V, R L = 8?, THD=10%

MUTE FACILITY (POP FREE) WITH LOW CONSUMPTION

AC SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION

DESCRIPTION

The TDA7263 is class AB dual audio power am-plifier assembled in the new Clipwatt package,specially designed for high quality sound applica-tion as HI-FI music centers and stereo TV sets.This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

September 2003?

TEST AND APPLICATION CIRCUIT

Clipwatt11

ORDERING NUMBER:TDA7263

1/8

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ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit V S Supply Voltage without Load35V

I O Output Peak Current (repetitive f >20Hz)2A

P tot Total Power Dissipation (T case = 70°C)25W T op Operating Temperature Range0 to 70°C T stg,Tj Storage & Junction Temperature-40 to 150°C

PIN CONNECTION (Top view)

BLOCK DIAGRAM

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ELECTRICAL CHARACTERISTICS (Refer to the stereo test and application circuit, V S = 28V; R L = 8?; G v = 30dB; f = 1KHz; T amb = 25° C unless otherwise specified.)

Symbol Parameter

Test Condition

Min.Typ.

Max.Unit V S Supply Voltage

10

30

V V O Quiescent Output Voltage 13.5V I q Total Quiescent Current 7095

mA P O Output Power (RMS) d = 10% Tamb = 85°C d = 1%

10

129.5W W d Total Harmonic Distortion P O = 1W, f = 1kHz

f = 100Hz to 10KHz; P O = 0.1 to 8W 0.02

0.20.5%

CT Cross Talk R S = 10K ?; f = 1KHz 70dB

R S = 10K ?; f = 10KHz

60dB

R I Input Resistance

100200K ?f L Low Frequency Roll-off (-3dB)40

Hz f H High Frequency Roll-off (-3dB)80KHz e N Total Input Noise Voltage A Curve; R S = 10K ?

1.5mV f = 22Hz to 22KHz; R S = 10K ?

310

μV SVR Supply Voltage Rejection (each channel)

R S = 10K ?; f = 100Hz; Vr = 0.5V

45

60dB T j

Thermal Shutdown Junction Temperature 145

°C

MUTE FUNCTION VT MUTE Mute Threshold 1 1.6V VT PLAY Play Threshold

4.5V ATT AM Mute Attenuation

70

100dB I qMUTE

Quiescent Current @ Mute

7

10

mA

TYPICAL CHARACTERISTICS (referred to the typical Application Circuit, V S = 28V, R L = 8?, unless

otherwise specified)

Figure 1:

Output Power vs. Supply Voltage

Figure 2: Distortion vs. Output Power

THERMAL DATA

Symbol Parameter

Value Unit R th j-case

Thermal resistance junction to case Max

3

°

C/W

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Figure 3: Quiescent Current vs. Supply Voltage Figure 4: Supply Voltage Rejection vs.

Frequency

Figure 5: Crosstalk vs. Frequency Figure 6: Output Attenuation & Quiescent

Current vs. V pin3

Figure 7: Total Power Dissipation vs. Output Power Figure 8: Maximum allowable Power dissipation vs. Ambient Temperature

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Figure 9: P.C. Board and Component Layout (1:1 scale)

APPLICATION SUGGESTION

The recommended values of the components are those shown on the typical application circuit. Different values can be used; the following table can help the designer.

Component Recomm.Value Purpose

Larger Than Smaller Than

R1 and R3 1.5K ?Close loop gain setting (*)Increase of gain Decrease of gain R2 and R447?Close loop gain setting (*)Decrease of gain Increase of gain

R5 and R6 4.7?Frequency stability Danger of oscillations C1 and C2100nF Input DC decoupling Higher SVR

Higher low frequency cutoff C347μF - Ripple Rejection - Mute time constant Increase of the Switch-on time

- Degradation of SVR

- Worse turn-off pop by muting C4100nF Supply Voltage Bypass Danger of oscillations C5

1000μF Supply Voltage Bypass C6 and C747μF Feedback input DC decoupling Increase of the Switch-on time

Danger of Switch-on time C8 and C90.1μF Frequency stability Danger of oscillations

C10 and C11

1000μF

Output DC decoupling

Higher low-frequency cut-off

(*) Closed loop gain must be higher than 26dB

Note:

Use either C1, C2 (Polyester) or C1(*), C2(*) (Electrolytic) but not both.

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BUILT-IN PROTECTION SYSTEMS

THERMAL SHUT-DOWN

The presence of a thermal limiting circuit offers the following advantages:

1-an overload on the output (even if it is perma-nent), or an excessive ambient temperature can be easily withstood.

2-the heatsink can have a smaller factor of safety compared with that of a conventional circuit. There is no device damage in the case of excessive junction temperature; if for any reason the junction temperature increases up to 145°C. the thermal shutdown simply re-

duces the output power and therefore the power dissipation.

The maximum allowable power dissipation de-pends upon the thermal resistance junction-ambi-ent. Figure 8 shows the dissipable power as a function of ambient temperature for different heatsink thermal resistance.

SHORT CIRCUIT (AC CONDITIONS)

The TDA7263 can withstand accidental short cir-cuits across the speaker made by a wrong con-nection during normal play operation.

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Weight: 1.80gr

Clipwatt11

DIM.

mm inch MIN.

TYP.

MAX.MIN.

TYP.

MAX.A 3.20.126B 1.05

0.041

C 0.150.006

D 1.5

0.059

E 0.490.55

0.0190.002

F 0.77

0.8

0.880.0300.031

0.035F10.15

0.006

G 1.57 1.7 1.830.0620.0670.072G116.871717.13

0.6640.6690.674

H1120.480H218.6

0.732

H319.850.781

L 17.90.700L114.550.580L210.71111.2

0.421

0.4330.441

L3 5.50.217M 2.540.100M1

2.54

0.100

0044448

OUTLINE AND MECHANICAL DATA

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Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

The ST logo is a registered trademark of STMicroelectronics.All other names are the property of their respective owners

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