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TDA8931 Datasheet

  • TDA8931

  • Power comparator 1 X 20 W

  • 161.38KB

  • 31頁

  • PHILIPS

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TDA8931
Power comparator 1
脳
20 W
Rev. 01 鈥?14 January 2004
Preliminary data sheet
1. General description
The TDA8931 is a switching power stage for high ef鏗乧iency class-D audio power ampli鏗乪r
systems.
It contains a Single-Ended (SE) power stage, drive logic, protection control logic, a full
differential input comparator and a HVP charger to charge the SE capacitor. With this
ampli鏗乪r a compact 1
脳
20 W closed loop self-oscillating digital ampli鏗乪r system can be
built. The TDA8931 has a high ef鏗乧iency so that a heat sink is not required up to
20 W (RMS). The system operates on an asymmetrical and a symmetrical supply voltage.
2. Features
s
s
s
s
s
s
s
High ef鏗乧iency
Operating voltage asymmetrical from 12 V to 35 V
Operating voltage symmetrical from
鹵6
V to
鹵17.5
V
Thermally protected
No heat sink required
Charger for single-ended capacitor
No pop sound
3. Applications
s
s
s
s
s
Flat panel television sets
Flat panel monitors
Multimedia systems
Wireless speakers
Micro systems
4. Quick reference data
Table 1:
General
V
P
I
q
I
stb
I
sleep
operating supply
voltage
quiescent current
standby current
sleep current
asymmetrical
symmetrical
Operating mode; V
P
= 22 V
Standby mode; V
P
= 22 V
Sleep mode; V
P
= 22 V
12
鹵6
-
-
-
22
鹵11
20
10
100
35
30
15
200
V
mA
mA
碌A(chǔ)
鹵17.5
V
Quick reference data
Conditions
Min
Typ
Max
Unit
Symbol Parameter

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