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INTEGRATED CIRCUITS
DATA SHEET
TDA1557Q 2 x 22 W BTL stereo car radio power amplifier with speaker protection
Product specification File under Integrated Circuits, IC01 May 1992
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
FEATURES * Requires very few external components * High output power * Low offset voltage at output * Fixed gain * Good ripple rejection * Mute/stand-by switch * Load dump protection * AC and DC short-circuit-safe to ground and VP * Thermally protected * Reverse polarity safe * Capability to handle high energy on outputs (VP = 0) QUICK REFERENCE DATA SYMBOL VP PARAMETER positive supply voltage range operating non-operating load dump IORM Itot Isb Isw ZI TXTAL PO SVRR VO Gv Gv repetitive peak output current total quiescent current stand-by current switch-on current input impedance crystal temperature THD = 10%; 4 RS = 0; f = 100 Hz to 10 kHz 6.0 - - - - - - 25 - - 45 - 40 - 45 14.4 - - - 80 0.1 - - - CONDITIONS MIN. GENERAL DESCRIPTION * No switch-on/switch-off plop * Flexible leads * Low thermal resistance.
TDA1557Q
* Protected against electrostatic discharge
The TDA1557Q is a monolithic integrated class-B output amplifier in a 13-lead single-in-line (SIL) plastic power package. The device contains 2 x 22 W amplifiers in BTL configuration and has been primarily developed for car radio applications.
TYP.
MAX. 18 30 45 4 - 100 60 - +150 - - 250 - 1 47
UNIT V V V A mA A A k C
Stereo application output power supply voltage ripple rejection DC output offset voltage channel separation channel unbalance closed loop voltage gain 22 - - - - 46 W dB mV dB dB dB
ORDERING INFORMATION EXTENDED TYPE NUMBER TDA1557Q Note 1. SOT141-6; 1996 August 23. PACKAGE PINS 13 PIN POSITION DIL MATERIAL plastic CODE SOT141R
May 1992
2
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
TDA1557Q
handbook, full pagewidth
input 1
1
mute switch
POWER STAGE CM
3
10 VP
VA
4
output 1A
30 k 183 18.1 k POWER STAGE mute switch CM
VA
6
output 1B
183
18.1 k
TDA1557Q
VP 11 input reference voltage stand-by switch 12 VA stand-by reference voltage mute switch loudspeaker protection 15 k mute reference voltage input 2 13 mute switch CM POWER STAGE mute/stand-by
15 k x1
VA
9
output 2B
30 k 183 18.1 k POWER STAGE mute switch CM
input reference voltage
VA
7
output 2A
183 2
18.1 k 5 8
MCD324 - 1
signal ground
power ground
Fig.1 Block diagram.
May 1992
3
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
PINNING SYMBOL INP1 GND1 VP1 OUT1A GND OUT1B OUT2A GND OUT2B VP2 M/SS Vref INP2 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 input 1 ground (signal) supply voltage 1 output 1A power ground 1 output 1B output 2A power ground 2 output 2B supply voltage 2 mute/stand-by switch input reference voltage input 2 DESCRIPTION FUNCTIONAL DESCRIPTION
TDA1557Q
The TDA1557Q contains two identical amplifiers with differential input stages, and can be used for bridge applications. The gain of each amplifier is fixed at 46 dB. Special features of this device are: a. mute/stand-by switch low stand-by current low mute/stand-by switching current (low cost supply switch) mute facility b. loudspeaker protection when a short circuit to ground is made, which forces a DC voltage of 1 V across the loudspeaker, a built-in protection circuit becomes active and limits the DC voltage across the loudspeaker to 1 V c. the harmonic distortion at low frequencies can be decreased by connecting two diodes to ground at pin 12.
handbook, halfpage
INP1 GND1 VP1 OUT1A GND OUT1B OUT2A GND OUT2B V
1 2 3 4 5 6 7 8 9
TDA1557Q
P2 10
M / SS 11 Vref 12 INP2 13
MCD322 - 1
Fig.2 Pin configuration.
May 1992
4
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
LIMITING VALUES In accordance with the Absolute maximum System (IEC 134). SYMBOL VP PARAMETER positive supply voltage operating non-operating load dump protected; during 50 ms; rise time 2.5 ms VPSC VPR IOSM IORM Ptot Tstg Tj AC and DC short-circuit safe voltage reverse polarity energy handling capability at outputs non-repetitive peak output current repetitive peak output current total power dissipation storage temperature range junction temperature VP = 0 - - - - - - -55 - - - - CONDITIONS MIN.
TDA1557Q
MAX. 18 30 45 18 6.0 200 6 4 60 +150 +150
UNIT V V V V V mJ A A W C C
THERMAL RESISTANCE SYMBOL Rth vj-a Rth vj-c PARAMETER from virtual junction to ambient in free air from virtual junction to case (see Fig.3) THERMAL RESISTANCE 40 K/W 1.5 K/W
handbook, halfpage
output 1
output 2
virtual junction 2.8 K/W 2.8 K/W
0.1 K/W
case
MLA382
Fig.3 Equivalent thermal resistance network.
May 1992
5
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
DC CHARACTERISTICS VP = 14.4 V, Tamb = 25 C, unless otherwise specified. See note 1. SYMBOL Supply VP IP VO Vos Vsw Vmute VO Vos Vsb Isb positive supply voltage range quiescent current DC output voltage DC output offset voltage note 3 note 2 6.0 - - - 14.4 80 6.9 - - - - - - - - 30 5.5 PARAMETER CONDITIONS MIN.
TDA1557Q
TYP.
MAX.
UNIT
18 160 - 250 - 6.4 20 250
V mA V mV
Mute/stand-by switch switch-on voltage level 8.5 V
MUTE CONDITION mute voltage output signal in mute position DC output offset voltage VI = 1 V max; f = 1 kHz 3.3 - - 0 V11 0.5 V 0.5 < V11 2 V Isw IP switch-on current positive supply current short-circuit to GND; note 4 Loudspeaker protection V4-6, 7-9 DC voltage across RL - - 1.0 V - - - - V mV mV
STAND-BY CONDITION stand-by voltage DC current in stand-by condition 100 500 60 - A A A mA 2.0 V
May 1992
6
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
AC CHARACTERISTICS VP = 14.4 V; RL = 4 ; f = 1 kHz; Tamb = 25 C; unless otherwise specified. See note 1. SYMBOL PO PARAMETER output power THD = 0.5% THD = 10% VP = 13.2 V; THD = 0.5% VP = 13.2 V; THD = 10% THD B flow fhigh Gv SVRR total harmonic distortion power bandwidth low frequency roll-off high frequency roll-off closed loop voltage gain supply voltage ripple rejection ON; note 6 ON; note 7 ON; note 8 MUTE; notes 6 and 7 stand-by; notes 6 and 7 ZI Vno input impedance noise output voltage ON; RS = 0; note 9 RS = 10 k; note 9 MUTE; notes 9 & 10 Gv channel separation channel unbalance - - - 40 - 325 350 180 - - 34 38 45 45 80 25 - - - - - 30 PO = 1 W THD = 0.5%; PO = -1 dB with respect to 15 W -1 dB; note 5 -1 dB - 20 45 15 20 - - - - 17 22 12 17 0.1 20 to CONDITIONS MIN.
TDA1557Q
TYP.
MAX. - - - - - - - - 47 - - - - - 36 500 - - - 1
UNIT W W W W % Hz Hz kHz dB dB dB dB dB dB k V V V dB dB
15 000 25 - 46
Notes to the characteristics 1. All characteristics are measured using the circuit shown in Fig.4 2. The circuit is DC adjusted at VP = 6 to 18 V and AC operating at VP = 8.5 to 18 V 3. At 18 V < VP < 30 V, the DC output voltage VP/2 4. Conditions: V11 = 0; short-circuit output to GND; switch V11 to MUTE or ON condition (rise time V11 > 10 s). 5. Frequency response externally fixed. 6. Ripple rejection measured at the output with a source-impedance of 0 (max. ripple amplitude of 2 V) and a frequency of 100 Hz. 7. Ripple rejection measured at the output with a source-impedance of 0 (max. ripple amplitude of 2 V) and a frequency between 1 and 10 kHz. 8. Ripple rejection measured at the output with a source-impedance of 0 (max. ripple amplitude of 2 V) and a frequency between 100 Hz and 10 kHz. Pin 12 is decoupled with two diodes to ground. 9. Noise voltage measured in a bandwidth of 20 Hz to 20 kHz. 10. Noise output voltage independent of RS (Vin = 0).
May 1992
7
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
TDA1557Q
mute / stand-by
handbook, full pagewidth
+V 100 nF 11 3 10 2200 F
270 nF input 1
1 4
30 k 6 ground (signal) 2
R L= 4
12 reference voltage 270 nF input 2 13 9
30 k 7
R L= 4
TDA1557Q
5 8
MCD323 - 1
power ground (substrate)
Fig.4 Stereo BTL application.
May 1992
8
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
PACKAGE OUTLINE DBS13P: plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm)
TDA1557Q
SOT141-6
non-concave x D Dh
Eh
view B: mounting base side
d
A2
B j E A
L3
L
Q c
1 Z e e1 bp wM
13 m e2 vM
0
5 scale
10 mm
DIMENSIONS (mm are the original dimensions) UNIT mm A 17.0 15.5 A2 4.6 4.2 bp 0.75 0.60 c 0.48 0.38 D (1) 24.0 23.6 d 20.0 19.6 Dh 10 E (1) 12.2 11.8 e 3.4 e1 1.7 e2 5.08 Eh 6 j 3.4 3.1 L 12.4 11.0 L3 2.4 1.6 m 4.3 Q 2.1 1.8 v 0.8 w 0.25 x 0.03 Z (1) 2.00 1.45
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT141-6 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION
ISSUE DATE 92-11-17 95-03-11
May 1992
9
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power amplifier with speaker protection
SOLDERING Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our "IC Package Databook" (order code 9398 652 90011). Soldering by dipping or by wave The maximum permissible temperature of the solder is 260 C; solder at this temperature must not be in contact with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values
TDA1557Q
The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. Repairing soldered joints Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 C, contact may be up to 5 seconds.
This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications.
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale.
May 1992
10

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