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TB2912HQ PDF 데이터시트 ( Data , Function )

부품번호 TB2912HQ 기능
기능 Maximum Power 41 W BTL x 4-ch Audio Power IC
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TB2912HQ 데이터시트, 핀배열, 회로
TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic
TB2912HQ
TB2912HQ
Maximum Power 41 W BTL × 4-ch Audio Power IC
The TB2912HQ is 4ch audio amplifier for car audio application.
This IC can generate high power, high quality sound output,
POUT MAX = 41 W, using a pure complementary P-ch and N-ch
DMOS output stage.
The built-in self diagnosis function which is included can be
controlled via I2C BUS.
In addition, stand-by and mute function, and various
Protection feature are included.
Features
Weight: 7.7 g (typ.)
High power output
: POUT MAX (1) = 41 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 )
: POUT MAX (2) = 37 W (typ.)
(VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 )
: POUT MAX (3) = 70 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 2 )
: POUT (1) = 27 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 )
: POUT (2) = 23 W (typ.)
(VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 )
: POUT (3) = 46 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 2 )
Low distortion ratio: THD = 0.015% (typ.)
(VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 )
Low noise: VNO = 90 µVrms (typ.)
(VCC = 13.2 V, Rg = 0 , BW = 20 Hz to 20 kHz, RL = 4 )
Built in stand by & muting function: controlled via I2C Bus (pin 16)
Built in clipping detection (pin 4)
Built in I2C Bus for stand-by, mute, voltage gain control, self diagnosis: Output short detection, offset detection,
tweeter or speaker open detection (pin 22 and 25)
Built-in various protection circuits (Note 1, Note 2)
Thermal shut down, over-voltage, out to GND, out to VCC, out to out short circuit
Operating supply voltage: VCC (opr) = 9 to 18 V (RL = 4 )
VCC (opr) = 9 to 16 V (RL = 2 )
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.
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TB2912HQ pdf, 반도체, 판매, 대치품
TB2912HQ
3. Clip Detection
The output clip detection terminal, pin 4, has an open collector output structure on chip as shown in
Figure 3. In the case when the output waveform is clipping, the clip detection circuit is operated and the
NPN Tr. is turned on.
It is possible to improve the audio output quality by controlling the volume and/or tone control circuits
through a low pass filter (L.P.F) smoothing circuit as shown in Figure 3.
The sensitivity of the circuit to clipping level can be selected T.H.D. = 1% or 10% via I2C bus.
In the event that this function is not used, pin4 should be left open circuit.
Clip detector
4
Volume control circuit
L.P.F.
smoothing
circuit
Tone control circuit
Output AC
waveform
Internal detection
circuit
Clip Det. 5 V
output
GND
Waveform L.P.F
output
Figure 3 Clip Detection
4
2006-04-28

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TB2912HQ 전자부품, 판매, 대치품
TB2912HQ
READ
Byte 1
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
At “Bit = 1” Condition
0 0 0 0 0 0 0 1 Ch1 Short to GND
0 0 0 0 0 0 1 0 Ch1 Short to VCC
0 0 0 0 0 1 0 0 Ch1 Open load or Offset Detected
0 0 0 0 1 0 0 0 Ch1 Short load
0 0 0 1 0 0 0 0 Ch1 Diagnosis condition (bit = 1: permanent, 0: turn-on)
Ch1 Current Detection (at IB2 D2 = 1 = enable only)
0 0 1 0 0 0 0 0 (IB2 D7 = 0: bit = 1: <250 mA, 0: >500 mA)
(IB2 D7 = 1: bit = 1: <100 mA, 0: >300 mA)
0 1 0 0 0 0 0 0 Bit = 1: Diag. Cycle terminated, 0: Not terminated
1 0 0 0 0 0 0 0 TSD Mute ON (thermal warning)
Byte 2
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
At “Bit = 1” Condition
0 0 0 0 0 0 0 1 Ch2 Short to GND
0 0 0 0 0 0 1 0 Ch2 Short to VCC
0 0 0 0 0 1 0 0 Ch2 Open load or Offset Detected
0 0 0 0 1 0 0 0 Ch2 Short load
0 0 0 1 0 0 0 0 Ch2 Diagnosis condition (bit = 1: permanent, 0: turn-on)
Ch2 Current Detection (at IB2 D2 = 1 = enable only)
0 0 1 0 0 0 0 0 (IB2 D7 = 0: bit = 1: <250 mA, 0: >500 mA)
(IB2 D7 = 1: bit = 1: <100 mA, 0: >300 mA)
0 1 0 0 0 0 0 0 Current sensor activated (D6 = 1)
1 0 0 0 0 0 0 Offset detection activated (D7 = 1)
Byte 3
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
At “Bit = 1” Condition
0 0 0 0 0 0 0 1 Ch3 Short to GND
0 0 0 0 0 0 1 0 Ch3 Short to VCC
0 0 0 0 0 1 0 0 Ch3 Open load or Offset Detected
0 0 0 0 1 0 0 0 Ch3 Short load
0 0 0 1 0 0 0 0 Ch3 Diagnosis condition (bit = 1: permanent, 0: turn-on)
Ch3 Current Detection (at IB2 D2 = 1 = enable only)
0 0 1 0 0 0 0 0 (IB2 D7 = 0: bit = 1: <250 mA, 0: >500 mA)
(IB2 D7 = 1: bit = 1: <100 mA, 0: >300 mA)
1 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ Diagnotic status (= IB1 D6 bit = 1: diag enable)
1 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ Stand-by status (= IB2 D4 bit = 1: play)
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TB2912HQ

Maximum Power 41 W BTL x 4-ch Audio Power IC

Toshiba Semiconductor
Toshiba Semiconductor

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