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 TDA1557Q FEATURES • Protected against electrostatic discharge • Requires very few external components • No switch-on/switch-off plop • High output power • Flexible leads • Low offset voltage at output • Low thermal resistance. • Fixed gain • Good ripple rejection GENERAL DESCRIPTION • Mute/stand-by switch 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 × 22 W amplifiers in BTL configuration and has been primarily developed for car radio applications. • 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 CONDITIONS MIN. TYP. MAX. UNIT positive supply voltage range operating 6.0 14.4 18 V non-operating − − 30 V load dump − − 45 V IORM repetitive peak output current − − 4 A Itot total quiescent current − 80 − mA Isb stand-by current − 0.1 100 µA Isw switch-on current − − 60 µA ZI input impedance 25 − − kΩ TXTAL crystal temperature − − +150 °C Stereo application PO output power THD = 10%; 4 Ω − 22 − W SVRR supply voltage ripple rejection RS = 0; f = 100 Hz to 10 kHz 45 − − dB ∆VO DC output offset voltage − − 250 mV α channel separation 40 − − dB ∆Gv channel unbalance − − 1 dB Gv closed loop voltage gain 45 46 47 dB ORDERING INFORMATION EXTENDED TYPE NUMBER TDA1557Q PACKAGE PINS PIN POSITION MATERIAL CODE 13 DIL plastic SOT141R Note 1. SOT141-6; 1996 August 23. 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 mute switch 1 10 3 POWER STAGE VP CM 4 VA output 1A 30 kΩ 183 Ω 18.1 kΩ POWER STAGE mute switch CM 6 VA 183 Ω output 1B 18.1 kΩ TDA1557Q VP 11 input reference voltage stand-by switch mute/stand-by stand-by reference voltage 12 VA mute switch 15 kΩ x1 loudspeaker protection 15 kΩ mute reference voltage input 2 mute switch 13 POWER STAGE CM 9 VA output 2B 30 kΩ 183 Ω 18.1 kΩ POWER STAGE mute switch CM 7 VA input reference voltage 183 Ω 18.1 kΩ 5 2 8 MCD324 - 1 signal ground power ground Fig.1 Block diagram. May 1992 3 output 2A Philips Semiconductors Product specification 2 x 22 W BTL stereo car radio power amplifier with speaker protection TDA1557Q PINNING SYMBOL FUNCTIONAL DESCRIPTION PIN 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: DESCRIPTION INP1 1 input 1 GND1 2 ground (signal) VP1 3 supply voltage 1 OUT1A 4 output 1A GND 5 power ground 1 OUT1B 6 output 1B low mute/stand-by switching current (low cost supply switch) OUT2A 7 output 2A mute facility GND 8 power ground 2 OUT2B 9 output 2B VP2 10 supply voltage 2 M/SS 11 mute/stand-by switch Vref 12 input reference voltage INP2 13 input 2 a. mute/stand-by switch low stand-by current 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 1 GND1 2 VP1 3 OUT1A 4 GND 5 OUT1B 6 OUT2A 7 GND 8 OUT2B 9 V 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 TDA1557Q LIMITING VALUES In accordance with the Absolute maximum System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT positive supply voltage VP operating − 18 V non-operating − 30 V load dump protected; during − 45 V 50 ms; rise time ≥ 2.5 ms VPSC AC and DC short-circuit safe voltage − 18 V VPR reverse polarity − 6.0 V − 200 mJ IOSM non-repetitive peak output current − 6 A IORM repetitive peak output current − 4 A VP = 0 energy handling capability at outputs Ptot total power dissipation − 60 W Tstg storage temperature range −55 +150 °C Tj junction temperature − +150 °C THERMAL RESISTANCE SYMBOL PARAMETER THERMAL RESISTANCE Rth vj-a from virtual junction to ambient in free air 40 K/W Rth vj-c from virtual junction to case (see Fig.3) 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 TDA1557Q DC CHARACTERISTICS VP = 14.4 V, Tamb = 25 °C, unless otherwise specified. See note 1. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VP positive supply voltage range IP quiescent current VO DC output voltage ∆Vos DC output offset voltage note 2 6.0 14.4 18 V − 80 160 mA − 6.9 − V − − 250 mV 8.5 − − V 3.3 − 6.4 V − − 20 mV − − 250 mV 0 − 2.0 V V11 ≤ 0.5 V − − 100 µA 0.5 < V11 ≤ 2 V − − 500 µA − 30 60 µA − 5.5 − mA − − 1.0 V note 3 Mute/stand-by switch Vsw switch-on voltage level MUTE CONDITION Vmute mute voltage VO output signal in mute position ∆Vos DC output offset voltage VI = 1 V max; f = 1 kHz STAND-BY CONDITION Vsb stand-by voltage Isb DC current in stand-by condition Isw switch-on current IP positive supply current short-circuit to GND; note 4 Loudspeaker protection ∆V4-6, 7-9 DC voltage across RL May 1992 6 Philips Semiconductors Product specification 2 x 22 W BTL stereo car radio power amplifier with speaker protection TDA1557Q AC CHARACTERISTICS VP = 14.4 V; RL = 4 Ω; f = 1 kHz; Tamb = 25 °C; unless otherwise specified. See note 1. SYMBOL PO PARAMETER CONDITIONS MIN. TYP. MAX. UNIT output power THD = 0.5% 15 17 − W THD = 10% 20 22 − W VP = 13.2 V; THD = 0.5% − 12 − W VP = 13.2 V; THD = 10% − 17 − W THD total harmonic distortion PO = 1 W − 0.1 − % B power bandwidth THD = 0.5%; PO = −1 dB − 20 to − Hz flow low frequency roll-off −1 dB; note 5 − 25 − Hz fhigh high frequency roll-off −1 dB 20 − − kHz Gv closed loop voltage gain 45 46 47 dB SVRR supply voltage ripple rejection ON; note 6 34 − − dB ON; note 7 38 − − dB ON; note 8 45 − − dB MUTE; notes 6 and 7 45 − − dB stand-by; notes 6 and 7 80 − − dB 25 30 36 kΩ ON; RS = 0; note 9 − 325 500 µV RS = 10 kΩ; note 9 − 350 − µV MUTE; notes 9 & 10 − 180 − µV with respect to 15 W ZI input impedance Vno noise output voltage 15 000 α channel separation 40 − − dB ∆Gv channel unbalance − − 1 dB 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 µs). 5. Frequency response externally fixed. 6. Ripple rejection measured at the output with a source-impedance of 0 Ω (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 Ω (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 Ω (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 +V handbook, full pagewidth 100 nF 11 270 nF input 1 3 2200 µF 10 1 4 R L= 4 Ω 30 kΩ 6 ground (signal) 2 12 reference voltage 270 nF input 2 13 9 R L= 4 Ω 30 kΩ 7 TDA1557Q 5 8 power ground (substrate) Fig.4 Stereo BTL application. May 1992 8 MCD323 - 1 Philips Semiconductors Product specification 2 x 22 W BTL stereo car radio power amplifier with speaker protection TDA1557Q PACKAGE OUTLINE DBS13P: plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm) SOT141-6 non-concave Dh x D Eh view B: mounting base side d A2 B j E A L3 L Q c 1 13 e1 Z e bp e2 m w M 0 5 v M 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A2 bp c D (1) d Dh E (1) e e1 e2 Eh j L L3 m Q v w x Z (1) mm 17.0 15.5 4.6 4.2 0.75 0.60 0.48 0.38 24.0 23.6 20.0 19.6 10 12.2 11.8 3.4 1.7 5.08 6 3.4 3.1 12.4 11.0 2.4 1.6 4.3 2.1 1.8 0.8 0.25 0.03 2.00 1.45 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION REFERENCES IEC JEDEC EIAJ ISSUE DATE 92-11-17 95-03-11 SOT141-6 May 1992 EUROPEAN PROJECTION 9 Philips Semiconductors Product specification 2 x 22 W BTL stereo car radio power amplifier with speaker protection 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. 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. 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 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 This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values 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