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(R)
TDA7451
4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS TRIPLE POWER SUPPLY
PRELIMINARY DATA
HIGH OUTPUT POWER CAPABILITY: 4 x 9.5W OR 2 x 32W/4 MAX 4 x 8.5W OR 2 x 28W/4 EIAJ 4 x 7W OR 2 x 22W/4 @14.4V, 1KHz; 10% MINIMIZED EXTERNAL COUNT - NO NEED OF DECOUPLING CAPACITORS - NO NEED OF BOOTSTRAP CAPACITOR - NO NEED OF EXTERNAL COMPENSATION - INTERNALLY FIXED GAIN (20dB) POP-FREE AUDIO SECTION ST-BY FUNCTION (C-MOS) MUTE FUNCTION (C-MOS) CLIP DETECTOR, THERMAL WARNING, SHORT CIRCUIT DETECTION BUILT-IN VOLTAGE REGULATORS: - 5V @ 150mA WITH RESET - 5V @ 500mA WITH ST-BY - 8.5V @ 200mA WITH ST-BY REGULATORS DIAGNOSTIC FEATURE: UNDERVOLTAGE, 8.5V DROP SENSE, SHORT CIRCUIT, LOAD DUMP, OVER-TEMPERABLOCK DIAGRAM
Flexiwatt25 ORDERING NUMBER: TDA7451
TURE PROTECTIONS General: LOAD DUMP OVERRATING CHIP TEMPERATURE Audio Section: OUT SHORT (TO GND, TO Vs AND ACROSS THE LOAD) Power Supply Section: SHORT CIRCUIT PROTECTION (OUT TO GND)
IN RR IN RF 10K MUTE 10F 10K ST-BY 1F 8.5V 10F 5V 10F 5V 22K 10F 22K 9 1 7 SVR DIAG 19 18,24 S-GND PW-GND + V O1 4 150mA REG. V O2 3 500mA REG. hvcc V O3 2 200mA REG. 21 RR 25 HVCC LF + 17 + TAB LR DIAG 16 DDL 0.1F IN LF IN LR 0.1F
D95AU311C
0.1F
0.1F VCC1 VCC2 6 + 20 23 + RF 0.1F
VCC 1000F
8
22
12
11
+
-
RESET
10 STCAP 470F
5
15
14
13
47F
October 1998
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This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
TDA7451
ABSOLUTE MAXIMUM RATINGS
Symbol VS VS VS Io Io Ptot Tstg, Tj V out Vin RESR Operating Supply Voltage DC Supply Voltage Peak Supply Voltage (t = 50ms) Audio Output Peak Current (non repetitive t = 100s) Audio Output Peak Current (repetitive f > 10Hz) Voltage Regulators Output Current Power Dissipation at Tcase = 85C Storage and Junction Temperature Range Output Voltages (DIAG, RESET) Input Voltages (ST-BY, MUTE) Output capacitor series resistance Parameter Value 18 28 40 4 3 internally limited 55 -40 to 150 7 18 0.2 to 10 W C V V Unit V V V A A
PIN CONNECTION
1
25
OUT-LF
RESET
DDL
ST-CAP
VCC1
OUT-LR
REG3
REG2
REG1
IN-RR
VCC2
IN-RF
DIAG
SVR
PWGND
OUT-RF
IN-LF
PWGND
SGND
THERMAL DATA
Symbol Rth j-case Parameter Thermal Resistance Junction-case 1.2 Unit C/W
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OUT-RR
ST-BY
D95AU315
HVCC
MUTE
IN-LR
TAB
TDA7451
PO = 4 X 7W S.E. APPLICATION
IN RR IN RF 10K MUTE 10F 10K ST-BY 1F VO3 10F 5V 10F 5V 10F 22K 22K 9 1 7 19 PW-GND SVR 10 STCAP 47F 470F 0.1F IN LF IN LR 0.1F
D96AU514
0.1F
0.1F VCC1 VCC2 6 20 23 + RF 0.1F
VCC 1000F
8
22
12
11
2
8.5V
VO2
3
21
RR
+
V O1
4
25
HVCC LF
17 + TAB LR -
RESET
DIAG
+
5
15
14
16 DDL
13
18,24 S-GND
PO = 2 X 22W BTL APPLICATION
IN R 10K MUTE 10F 22 10K ST-BY 1F 8.5V 10F 5V 10F 5V 22K 10F 22K VO1 4 17 TAB + OUT L PW-GND VO2 3 25 VO3 2 21 8 12 11 0.22F VCC1 6 VCC2 20 23 + OUT R 0.1F VCC 1000F
RESET DIAG SVR
9 7 10 STCAP 47F 470F 0.22F
1
19 18,24 S-GND
5
15
14 DDL
16
13
D96AU515
IN L
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TDA7451
ELECTRICAL CHARACTERISTICS (Refer to the test circuit; VS = 14.4V; RL = 4, Tamb = 25C, f = 1kHz, unless otherwise specified)
Symbol Parameter Total Quiescent Current ST-BY IN Threshold Voltage ST-BY OUT Threshold Voltage Stand-by Current Consumption Output Power Test Condition IL01, IL02, IL03 = 5mA 3.5 IL01 = 2mA R L = 4; THD = 10% Bridge Single Ended VS = 13.7V Bridge Single Ended VS = 14.4V Bridge Single Ended R L = 4; Single Ended, PO = 0.1 to 3W Bridge, PO = 0.1 to 8W f = 1kHz; Rg = 0 f = 10kHz; R g = 0 Single Ended Bridge Single Ended Bridge -3dB R g = 0; Single Ended R g = 0; f = 100Hz; Single Ended Play mode; Vpin8 = 5V 0.5 Min. Typ. 80 Max. 150 1.5 Unit mA V V mA
GENERAL
Iq VSB IN VSB OUT IST-BY PO
AUDIO SECTION
19 6 26 7.5 30 8 22 7 28 8.5 32 9.5 0.04 0.06 60 55 100 50 20 26 0.3 0.3 W W W W W W % % dB dB K K dB dB dB KHz V dB dB A dB V V A A V mV mA mV dB dB mV V V mV V
Po EIAJ
EIAJ Output Power (**)
Po max.
Max. Output Power (**)
d
Distortion
CT R IN GV GV BW ENO SVR ASB IPIN 8 AM VM IN VM OUT ICD
Cross Talk Input Impedance Voltage Gain Voltage Gain Match. Bandwidth Output Noise Voltage (*) Supply Voltage Rejection Stand-by Attenuation ST-BY Pin Current MUTE Attenuation MUTE IN Threshold Voltage MUTE OUT Threshold Voltage Clipping Detector Current (Pull up to 5V with 10K) Output Voltages Load Regulation 1 Current Limit Dropout Voltages Ripple Rejection
50 70 35 19 25 100 48 90 -10 80 3.5
130 65 21 27 1
100 55 100 30 90 1.5
CDoff: Pomin = 3.5W CDon: THD = 5% I01 = 5mA I01 = 5 to 150mA V01 = 0V I01 = 150mA Vripple = 1Vpp; I01 = 50mA f = 100Hz f = 10KHz VS = 8 to 18V; IO1 = 5mA
50 4.85 250
190 5 350
5 280 5.15 80 600 700
POWER SUPPLY SECTION
V O1 VO1 ILO1 VO1 SVR VO1
60 50 10 3.5 4.0 4.25 250 40 4.7 500 1.5
Line Regulation 1 Low VREG1 Reset On Threshold Low VREG1 Reset Off Threshold Reset Threshold Hysteresis vs Reg 1 Reset Output Voltage
RESET
Reset On Reset Off Reset Hyst Vout on Reset
Reset activated R(Reset to VReg1) 15K
(*) 22Hz to 22KHz
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TDA7451
ELECTRICAL CHARACTERISTICS (continued)
Symbol Parameter Test Condition Min. Typ. Max. Unit
DIAGNOSTIC OUTPUT
Diag On Vs Diag Off Vs Diag Hyst Vs Diag Dump Diag On Drop Vout On Diag V O2 VO2 IL02 VO2 SVR VO2 V O3 VO3 IL03 VO3 SVR VO3 Low Vs Diag. ON Threshold Low Vs Diag. OFF Thrershold Low Vs Diag. Hysteresis Diag. Threshold vs Overvoltage VREG3 Output Voltage Drop Before Diag. Activation Diag. Output Voltage Output Voltage 2 Load Regulation 2 Current Limit 2 Dropout Voltage Ripple Rejection 7 7.5 7.6 100 21 90 8 150 22 200 1.5 4.85 0.8 5 1 1 5.15 100 1.5 1.5 V V mV V mV V V mV A V dB dB mV V mV mA V dB dB mV
20 IO3 = 100mA Diag activated R (Diag to VREG1) 15K IO2 = 5mA IO2 = 5 to 500mA VO2 = 0V IO2 = 500mA Vripple = 1Vpp; I02 = 100mA f = 100Hz f = 10KHz VS = 8 to 18V, IO2 = 5mA IO3 = 5mA IO3 = 5 to 200mA IO3 = 200mA Vripple = 1Vpp; I03 = 100mA f = 100Hz f = 10KHz VS = 11 to 18V, IO3 = 5mA
60 50 8.25 300 10 8.5 400 40 8.75 80 800 1
Line Regulation Output Voltage 3 Load Regulation 3 Current Limit 3 Dropout Voltage Ripple Rejection
60 50 10 40
Line Regulation 3
DIAGNOSTIC DIAGRAM
DIAG STCAP
VCC HYST=0.1V 7.5V + DUMP + 21V SHORT Tj>170 EN SHORT
STCAP OUT REG1
REG1 5V 150mA
HYST=0.5V 4V
RESET + -
OUT
REG3
REG3 8.5V 200mA
DROP SENSE OUT
ST-BY 2.8V
+ -
SHORT
OUT
REG2
REG2 5V 500mA
EN
+ 2.2V -
AMPLIFIERS OVERLOAD CD
REFERENCE
EN
CLIPPING
AMPLIFIERS
Tj>150
D96AU504B
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TDA7451
VOLTAGE SUPPLY SECTION WAVEFORMS
VCC
8.5 7.6 5
VREG1 4.25 4
RESET OFF
ON
ST-BY 2.2
VREG2 5V
VREG3 8.5
DIAG OFF
ON
D96AU505B
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TDA7451
AUDIO SECTION WAVEFORMS
ST-BY PIN VOLTAGE
t
MUTE PIN VOLTAGE
t
Vs OUTPUT WAVEFORM t
Vpin 16 WAVEFORM t CLIPPING
D96AU516
SHORT TO GND OR TO Vs
THERMAL PROXIMITY
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TDA7451
DIM. A B C D E F G G1 H H1 H2 H3 L L1 L2 L3 M M1 N O R R4 V2 V3 mm TYP. 1.90 1.40 0.90 0.39 1.00 24.00 29.23 17.00 12.80 0.80 21.97 18.97 15.70 7.85 4.00 4.00 2.20 2 1.70 0.50 inch TYP. 0.074 0.055 0.035 0.015 0.040 0.945 1.150 0.669 0.503 0.031 0.865 0.786 0.618 0.309 0.157 0.157 0.086 0.079 0.067 0.019
MIN. 4.45 1.80 0.75 0.37 0.80 23.75 28.90
MAX. 4.65 2.00 1.05 0.42 0.57 1.20 24.25 29.30
MIN. 0.175 0.070 0.029 0.014 0.031 0.935 1.138
MAX. 0.183 0.079 0.041 0.016 0.022 0.047 0.955 1.153
OUTLINE AND MECHANICAL DATA
21.57 18.57 15.50 7.70 3.70 3.60
22.37 19.37 15.90 7.95 4.30 4.40
0.849 0.731 0.610 0.303 0.145 0.142
0.880 0.762 0.626 0.313 0.169 0.173
20 45
Flexiwatt25
V3 H3
O
H H1 H2 R3 R4 A
L2
N
R
L3
L
L1
V2 D M E G G1 F M1 B
C
FLEX25
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TDA7451
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. Specification 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 (c) 1998 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com
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