參數(shù)資料
型號： TDF8546SD/N1
廠商： NXP SEMICONDUCTORS
元件分類： 音頻／視頻放大
英文描述： 44 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27
封裝： PLASTIC, SOT878-1, 27 PIN
文件頁數(shù)： 8/15頁
文件大小： 511K
代理商： TDF8546SD/N1
TDF8546
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3 — 30 August 2011
2 of 61
NXP Semiconductors
TDF8546
I2C-bus controlled 4
45 W best efficiency amplifier
Line driver mode supports engine start at a battery voltage as low as 6 V (16 dB and
mid-tap voltage 0.25VP)
Programmable clip detect: 2 %, 5 % or 10 %
Programmable thermal pre-warning
Pin STB can be programmed/multiplexed with second-clip detect
Clip information of each channel can be directed separately to pin DIAG or pin STB
Independent enabling of thermal-, clip- or load fault information (short across the load
or to VP or to ground) on pin DIAG
Loss-of-ground and open VP safe (minimum series resistance required)
All amplifier outputs short-circuit proof to ground, supply voltage and across the load
(channel independent)
All pins short-circuit proof to ground
Temperature controlled gain reduction to prevent audio holes at high junction
temperatures
Programmable low battery voltage detection to enable 7.5 V or 6 V minimum battery
voltage operation
Overvoltage protection (load-dump safe up to VP = 50 V) with overvoltage pre-warning
at 16 V
Offset detection
3.
Quick reference data
Table 1.
Quick reference data
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VP(oper)
operating supply
voltage
RL = 4
614.4
18
V
Iq
quiescent current
no load
-
260
350
mA
no load; VP = 7 V
-
190
-
mA
Po
output power
RL =4 ; VP = 14.4 V; maximum power;
Vi = 2 V RMS square wave
37
40
-
W
RL =4 ; VP = 15.2 V; maximum power;
Vi = 2 V RMS square wave
41
45
-
W
RL =4 ; VP = 14.4 V; THD = 0.5 %
18
20
-
W
RL =4 ; VP = 14.4 V; THD = 10 %
23
25
-
W
RL =2 ; VP = 14.4 V; THD = 10 %
40
44
-
W
RL =2 ; VP = 14.4 V; maximum power;
Vi = 2 V RMS square wave
58
64
-
W
THD
total harmonic
distortion
Po = 1 W to 12 W; fi = 1 kHz; RL =4 ; BTL mode
-
0.01
0.1
%
Po =1W; fi = 1 kHz; RL =4 ; high efficiency mode
-
0.015
-
%
Po =4W; fi = 1 kHz; RL =4 ; high efficiency mode
-
0.03
-
%
Vn(o)
output noise voltage
filter 20 Hz to 22 kHz; RS =1 k
amplifier mode
-
43
65
V
line driver mode
-
25
33
V
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