TDA2006

Description

The TDA2006 is a monolithic integrated circuit in Pent a watt package, intended for use as a low frequency class”AB” amplifier. At ±12V,d = 10 % typically it provides12W output power on a 4Ω load and 8W on a 8Ω . The TDA2006 provides high output current and has very low harmonic and cross-over distortion. Further the device incorporates an original (and  patented) short circuit protection system comprising an arrangement for automatically limiting the dissipated power so as to keep the working point of the output transistors within their safe operating area. A conventional thermal shutdown system is also included. The TDA2006 is pin to pin equivalent to theTDA2030.

Pin Connection

 PRACTICALCONSIDERATIONS

Printed Circuit Board

The layout shown in Figure should be adopted by the designers. If different layout are used, the ground points of input 1 and input 2 must be well decoupled from ground of the output on which a
rather high current flows.

Assembly Suggestion

No electrical isolation is needed between the package and the heat-sink with single supply voltage
configuration.

Application Suggestion

The recommended values of the components are the ones show non application circuits of Figure Above. Different values can be used.The table1 can help the designers.
Table 1 :

Download Datasheet TDA2006

TA8248K

Low Frequency Power Amplifier

TA8248K is an audio power IC with built-in two channels developed for portable radio cassette tape recorder with power ON/OFF switch. Because of the parts reduction and SIP (Single Inline Package),space merit is remarkable. Thermal shut down protection circuit is built in.

Features :

• High Power

         Pout (1) = 2.5 W (typ.)
         (VCC = 9 V, RL = 4Ω, f = 1 kHz, THD = 10%)
         Pout (2) = 4.6 W (typ.)
         (VCC = 12 V, RL = 4Ω, f = 1 kHz, THD = 10%)

• Low Popping Noise at Power ON
• Small Quiescent Current
  ICCQ = 21 mA (typ.) (VCC = 15 V, Vin = 0)
• Soft Clip
• Built-in Thermal Shut Down Protection Circuit
• Best for Supply Voltage 9 V, 12 V
• Operation Supply Voltage Range : VCC (opr) = 6~15 V (Ta = 25°C)

Blok Diagram

 

Application Information And Application Method

1. Adjustment of voltage gain

The voltage gain Gv is obtained as follows by R1, R2 and Rf in Fig.1.

 Figure 1

By increasing Rf, reduction of Gv is possible. However, since the feedback increase is liable to produce oscillation, it is recommended to use this at 40dB or over.

Thermal shut-down circuit

The thermal shut-down circuit is built in for the purpose of preventing the destruction of IC due to the

abnormal temperature rise when the heat radiation is insufficient. The operation temperature is set at radiation Fin temperature 175°C (typ.). At this temperature or over the bias is interrupted to prevent the destruction of IC.

Download Datasheet TA8428K