TDA7350 STMicroelectronics, TDA7350 Datasheet - Page 10
TDA7350
Manufacturer Part Number
TDA7350
Description
IC AMP AUDIO PWR 22W MULTIWATT11
Manufacturer
STMicroelectronics
Type
Class ABr
Datasheet
1.TDA7350.pdf
(22 pages)
Specifications of TDA7350
Output Type
1-Channel (Mono) or 2-Channel (Stereo)
Max Output Power X Channels @ Load
22W x 1 @ 3.2 Ohm; 11W x 2 @ 2 Ohm
Voltage - Supply
8 V ~ 18 V
Features
Depop, Short-Circuit and Thermal Protection, Standby
Mounting Type
Through Hole
Package / Case
Multiwatt-11 (Vertical, Bent and Staggered Leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TDA7350
Manufacturer:
FAI
Quantity:
2 189
Part Number:
TDA7350
Manufacturer:
CN/如韵
Quantity:
20 000
TDA7350
Fig. 25 represents the detailed turn-on transient
with reference to the stereo configuration.
At the power-on the output decoupling capacitors
are charged through an internal path but the de-
vice itself remains switched off (Phase 1 of the
represented diagram).
When the outputs reach the voltage level of about
1V (this means that there is no presence of short
circuits) the device switches on, the SVR capaci-
tor starts charging itself and the output tracks ex-
actly the SVR pin.
During this phase the device is muted until the
SVR reaches the "Play" threshold (~2.5V typ.), af-
ter that the music signal starts being played.
Stereo/Bridge Switching
There is also no need for external components for
Figure 24: Block Diagram; Stereo Configuration
10/22
changing from stereo to bridge configuration (figg.
24-27). A simple short circuit between two pins al-
lows phase reversal at one output, yet maintain-
ing the quiescent output voltage.
Stand-by
The device is also equipped with a stand-by func-
tion, so that a low current, and hence low cost
switch, can be used for turn on/off.
Stability
The device is provided with an internal compen-
sation wich allows to reach low values of closed
loop gain.
In this way better performances on S/N ratio and
SVR can be obtained.