Os motores de busca de Datasheet de Componentes eletrônicos |
|
TDA1564J Folha de dados(PDF) 7 Page - NXP Semiconductors |
|
TDA1564J Folha de dados(HTML) 7 Page - NXP Semiconductors |
7 / 30 page 2004 Jan 27 7 Philips Semiconductors Preliminary specification High efficiency 2 × 25 W/4 Ω stereo car radio power amplifier TDA1564 loudspeaker, the output stage will be repeatedly switched on and off. The duty cycle in the ‘on’ condition is low enough to prevent excessive dissipation. The device also has two independent DC offset detection circuits that can detect DC output voltages across the speakers. With a DC offset greater than 2 V, a warning is given on the diagnostic pin. There will be no internal shutdown with DC offsets. When the supply voltage drops below 6 V (e.g. engine start), the circuit mutes immediately, avoiding clicks from the electronic circuit preceding the power amplifier. The voltage of the SE electrolytic capacitor (pin 4) is kept at 0.5VP by means of a voltage buffer (see Fig.2). The value of this capacitor has an important influence on the output power in SE mode, especially at low signal frequencies. A high value is recommended to minimize dissipation at low frequencies. The diagnostic output is an open-collector output and requires a pull-up resistor. It gives the following outputs: • Clip detection at THD = 2.5 % • Short-circuit protection: – When a short-circuit occurs (for at least 10 ms) at the outputs to ground or the supply voltage, the output stages are switched off to prevent excessive dissipation; the outputs are switched on again approximately 500 ms after the short-circuit is removed, during this short-circuit condition the protection pin is LOW – When a short-circuit occurs across the load (for at least 10 ms), the output stages are switched off for approximately 500 ms; after this time, a check is made to see whether the short-circuit is still present – The power dissipation in any short-circuit condition is very low. • During start-up/shutdown, when the product is internally muted • Temperature prewarning: – A prewarning (junction temperature > 145 °C) indicates that the temperature protection will become active. The prewarning can be used to reduce the input signal and thus reduce the power dissipation. • Offset detection: – One of the channels has a DC output voltage greater than 2 V. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). THERMAL CHARACTERISTICS Note 1. The value of Rth(c-h) depends on the application (see Fig.5). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VP supply voltage operating − 18 V non-operating − 30 V load dump; tr > 2.5 ms − 45 V VP(sc) short-circuit safe voltage − 18 V Vrp reverse polarity voltage − 6V IORM repetitive peak output current − 4A Ptot total power dissipation − 60 W Tstg storage temperature −55 +150 °C Tvj virtual junction temperature − 150 °C Tamb ambient temperature −40 +85 °C SYMBOL PARAMETER CONDITIONS VALUE UNIT Rth(j-c) thermal resistance from junction to case note 1 1.3 K/W Rth(j-a) thermal resistance from junction to ambient in free air 40 K/W |
Nº de peça semelhante - TDA1564J |
|
Descrição semelhante - TDA1564J |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |