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부품번호 | TDA7269SA 기능 |
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기능 | 10W+10W STEREO AMPLIFIER | ||
제조업체 | ST Microelectronics | ||
로고 | |||
전체 11 페이지수
TDA7269SA
10W+10W STEREO AMPLIFIER WITH MUTE & ST-BY
1 FEATURES
■ WIDE SUPPLY VOLTAGE RANGE UP TO
+20V
■ SPLIT SUPPLY
■ 10+10W @THD = 10%, RL= 8Ω, VS = ±14V
■ NO POP AT TURN-ON/OFF
■ MUTE (POP FREE)
■ STAND-BY FEATURE (LOW Iq)
■ SHORT CIRCUIT PROTECTION TO GND
■ THERMAL OVERLOAD PROTECTION
■ CLIPWATT 11 PACKAGE
2 DESCRIPTION
The TDA7269SA is class AB power amplifier assem-
bled in the @ Clipwatt 11 package, specially de-
Figure 1. Package
Clipwatt11
Table 1. Order Codes
Part Number
TDA7269SA
Package
Clipwatt11
signed for high quality sound application as Hi-Fi
music centers and stereo TV sets.
The TDA7269SA is pin to pin compatible with
TDA7269, TDA7269A, TDA7269ASA, TDA7265,
TDA7499, TDA7499SA.
Figure 2. Block Diagram
15K 1µF
MUTE/
ST-BY
IN (L)
5
7
1µF
+5V µP
15K 18K
GND 9
1µF
IN (R) 11
D94AU085
+VS
3
1000µF
+
-
-
+
1
1000µF
4 OUT (L)
18K 4.7Ω
8 IN- (L)
100nF
560Ω
10 IN- (R)
560Ω
18K
2 OUT (R)
4.7Ω
6
-VS 100nF
RL (L)
RL (R)
September 2004
Rev. 2
1/11
TDA7269SA
3 MUTE STAND-BY FUNCTION
The pin 5 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to +VS.
– When Vpin5 higher than = +VS -2.5V the amplifier is in Stand-by mode and the final stage generators
are off.
– When Vpin5 between = +VS -2.5V and VS -6V the final stage current generators are switched on and
the amplifier is in mute mode.
– When Vpin5 lower than = +VS -6V the amplifier is play mode.
Figure 5.
+VS
(V)
20
-VS
-20
VIN
(mV)
Vpin5
(V)
VS
VS-2.5
VS-6
VS-10
Iq
(mA)
0
VOUT
(V)
t
OFF
PLAY
STDBY PLAY
OFF
STDBY
STDBY
MUTE D94AU086 MUTE
MUTE
MUTE
4/11
4페이지 TDA7269SA
5 HEAT SINK DIMENSIONING:
In order to avoid the thermal protection intervention, that is placed approximatively at Tj = 150°C, it is im-
portant the dimensioning of the Heat Sinker RTh (°C/W).
The parameters that influence the dimensioning are:
– Maximum dissipated power for the device (Pdmax)
– Max thermal resistance Junction to case (RTh j-c)
– Max. ambient temperature Tamb max
– Quiescent current Iq (mA)
5.1 Example:
VCC = ±14V, Rload = 8ohm, RTh j-c = 3.9 °C/W , Tamb max = 50°C
Pdmax = (N° channels) · Π------22----V⋅---R-c---cl--o2---a---d- + Iq ⋅ Vcc
Pdmax = 2 · ( 4.96 ) + 0.84 = 10.7 W
(Heat Sinker) RTh c-a = 1----5---0-----–P-----dT----am---m-a---xb-----m----a--x- – RTh j-c = 1----5--1-0--0---–-.-7---5---0-- – 3.9 = 5.4°C/W
In figure 7 is shown the Power derating curve for the device.
Figure 10. Power derating curve
25
20
15
10
5
0
0
(b)
(c)
(a)
a) Infinite Heatsink
b) 5.0 °C/ W
c) 7.0 °C/ W
40 80 120
Tamb (°C)
160
7/11
7페이지 | |||
구 성 | 총 11 페이지수 | ||
다운로드 | [ TDA7269SA.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
TDA7269SA | 10W+10W STEREO AMPLIFIER | ST Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |