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TFA9810 Datasheet

  • TFA9810

  • Stereo full-bridge audio amplifier 2 x 12 W

  • 148.98KB

  • 29頁(yè)

  • PHILIPS

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TFA9810
Stereo full-bridge audio ampli鏗乪r 2 x 12 W
Rev. 02 鈥?30 August 2007
Preliminary data sheet
1. General description
The TFA9810 is a two-channel power comparator for high-ef鏗乧iency class D audio
ampli鏗乪r systems. It contains two full-bridge Bridge-Tied Load (BTL) power stages, drive
logic, protection control logic and full differential input comparators. By using this power
comparator a compact closed-loop self-oscillating digital ampli鏗乪r system or open-loop
system can be built. The TFA9810 does not require a heat sink and operates using an
asymmetrical supply voltage.
2. Features
I
I
I
I
I
I
Stereo full-bridge power comparator for class D audio ampli鏗乪r applications
No external heat sink required
Operating voltage range: asymmetrical from 8 V to 20 V
Thermally protected
Zero dead-time switching
Current-limiting (no audible interruptions)
3. Applications
I
I
I
I
I
I
Self-oscillating or open-loop class D audio ampli鏗乪r applications
Flat-panel television sets
Flat-panel monitors
Multimedia systems
Wireless speakers
High-end CRT television sets
4. Quick reference data
Table 1.
Quick reference data
T
amb
= 25
擄
C; V
P
= 12 V; f
osc
= 550 kHz;
Figure 33
unless otherwise speci鏗乪d
Symbol
V
P
I
off
I
q
畏
po
Parameter
supply voltage
off-state current
quiescent current
output power
ef鏗乧iency
Condition
V
P
= V
DDPx
鈭?/div>
V
SSPx
Off mode
With load, 鏗乴ter and
snubbers connected
Output power
2 x 9 W into 8
鈩?
P
o
= P
o(nom)
Min
8
-
-
87
Typ
12
110
35
89
Max
20
200
45
-
Unit
V
碌A(chǔ)
mA
%

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