Document
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8272HQ
Max Power 43 W BTL × 4 ch Audio Power IC
The TA8272HQ is 4 ch BTL audio power amplifier for car audio application.
This IC can generate more high power: POUTMAX = 43 W as it is included the pure complementary PNP and NPN transistor output stage.
It is designed low distortion ratio for 4 ch BTL audio power amplifier, built-in stand-by function, muting function, and diagnosis circuit which can detect output to VCC/GND short, output offset voltage and over voltage input mode.
Additionally, the AUX amplifier and various kind of protector for car audio use is built-in.
Weight: 7.7 g (typ.)
Features
• High power : POUTMAX (1) = 43 W (typ.) (VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUTMAX (2) = 40 W (typ.) (VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUT (1) = 28 W (typ.) (VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
: POUT (2) = 24 W (typ.) (VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
• Built-in diagnosis circuit (pin 25) • Low distortion ratio: THD = 0.02% (typ.)
(VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 Ω) • Low noise: VNO = 0.10 mVrms (typ.)
(VCC = 13.2 V, Rg = 0 Ω, GV = 26dB, BW = 20 Hz~20 kHz) • Built-in stand-by switch function (pin 4) • Built-in muting function (pin 22) • Built-in AUX amplifier from single input to 4 channels output (pin 16) • Built-in various protection circuit
: Thermal shut down, over voltage, out to GND, out to VCC, out to out short • Operating supply voltage: VCC (opr) = 9~18 V
Note 1: Install the product correctly. Otherwise, it may result in break down, damage and/or degradation to the product or equipment.
Note 2: These protection functions are intended to avoid some output short circuits or other abnormal conditions temporarily. These protect functions do not warrant to prevent the IC from being damaged. - In case of the product would be operated with exceeded guaranteed operating ranges, these protection features may not operate and some output short circuits may result in the IC being damaged.
Downloaded from Elcodis.com electronic components distributor
1
2006-04-28
Block Diagram
C2 R1 C4
C5 C3
1 20 6 TAB VCC1 VCC2
IN1 11 C1
OUT1 (+) 9
PW-GND1 8 OUT1 (−)
7
IN2 12 C1
OUT2 (+) 5
PW-GND2 2 OUT2 (−)
3
16 C6
AUX IN
IN3 15 C1
OUT3 (+) 17
PW-GND3 18 OUT3 (−)
19
IN4 14 C1
PRE-GND 13
RIP 10
OUT4 (+) 21
PW-GND4 24 OUT4 (−)
23
DIAGNOSIS STBY OUT MUTE
4 25 22
RL RL
RL RL
: PRE-GND : PW-GND
Note3: Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purpose.
Downloaded from Elcodis.com electronic components distributor
2
2006-04-28
Caution and Application Method (Description is made only on the single channel.)
1. Voltage Gain Adjustment
This IC has no NF (negative feedback) terminals. Therefore, the voltage gain can’t adjusted, but it makes the device a space and total costs saver.
Input
Amp. 1
Amp. 2A
Amp. 2B
Figure 1 Block Diagram
The volta.