TB2904HQ Toshiba, TB2904HQ Datasheet

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TB2904HQ

Manufacturer Part Number
TB2904HQ
Description
Manufacturer
Toshiba
Datasheet

Specifications of TB2904HQ

No. Of Channels
4
Package
HZIP 25-P-1.00F
Recommended Vcc (v)
13.2
Rl=2 Ohm
Not Supported
Rl=4 Ohm
45W x 4
Rl=8 Ohm
-
Features/built-in Functions
4 BTL channels, standby switch, mute, BiCD process, offset detection
Operating Voltage (v)
9 to 18

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Maximum Power 43 W BTL × 4-ch Audio Power IC
applications.
includes the pure complementary P-ch and N-ch DMOS output
stage.
power amplifier, built-in standby function, muting function, and
various kinds of protectors.
Features
The TB2904H (o) is 4-ch BTL audio amplifier for car audio
This IC can generate higher power: P
It is designed to yield low distortion ratio for 4-ch BTL audio
Additionally, Off-set detector is built in.
High power output
: P
: P
: P
: P
Low distortion ratio: THD = 0.015% (typ.)
Low noise: V
Built-in standby switch function (pin 4)
Built-in muting function (pin 22)
Built-in Off-set detection function (pin 25)
Built-in various protection circuits:
Operating supply voltage: V
Note 1: Since this device’s pins have a low withstanding voltage, please handle it with care.
Note 2: Install the product correctly. Otherwise, it may result in break down, damage and/or degradation to the
Note 3: These protection functions are intended to avoid some output short circuits or other abnormal conditions
P (V
(V
(V
(V
OUT
OUT
OUT
OUT
Thermal shut down, overvoltage, out to GND, out to V
CC
CC
CC
CC
= 13.7 V, f = 1 kHz, JEITA max, R
= 14.4 V, f = 1 kHz, THD = 10%, R
= 13.2 V, f = 1 kHz, THD = 10%, R
MAX (1) = 43 W (typ.)
MAX (2) = 39 W (typ.)
(1) = 26 W (typ.)
(2) = 23 W (typ.)
product or equipment.
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.
= 14.4 V, f = 1 kHz, JEITA max, R
(V
NO
CC
= 90 µVrms (typ.)
= 13.2 V, Rg = 0 Ω, BW = 20 Hz to 20 kHz, R
TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic
(V
CC
= 13.2 V, f = 1 kHz, P
CC
(opr) = 9 to 18 V (R
TB2904HQ (o)
OUT
L
L
L
MAX = 43 W as it
= 4 Ω)
= 4 Ω)
= 4 Ω)
L
= 4 Ω)
OUT
L
= 4 Ω)
= 5 W, R
1
CC
, out to out short, speaker burned
L
L
= 4 Ω)
= 4 Ω)
Weight: 7.7 g (typ.)
TB2904HQ(o)
2004-03-26

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TB2904HQ Summary of contents

Page 1

... 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. TB2904HQ (o) MAX = OUT = 4 Ω ...

Page 2

... PW-GND1 OUT1 (−) OUT2 (+) IN2 PW-GND2 OUT2 (−) OUT3 (+) IN3 PW-GND3 OUT3 (−) OUT4 (+) IN4 PW-GND4 OUT4 (−) OFF-SET RIP STBY MUTE DET TB2904HQ( PLAY 1 MUTE : PRE-GND ...

Page 3

... Amp. 2A Amp. 1 Input Amp. 2B Figure 1 Block Diagram = 0dB : 20dB V2 = 6dB V (BTL 26dB V (BTL) (pin 4) ON OFF 1.5 3 Figure 2 With pin 4 set to High, 3 TB2904HQ( Power 10 kΩ 4 ≈ BIAS CUTTING CIRCUIT Power is turned ON 2004-03-26 ...

Page 4

... 13 kHz Ω out = 7.75 Vrms (20dBm) −20 −40 −60 −80 Mute ON/OFF −100 control −120 0 Figure 5 Mute Attenuation − TB2904HQ(o) Relay Battery From microcomputer Battery determined on the basic 1 at pin 22 should be 1 ATT – V MUTE 0 ...

Page 5

... Amp output GND Voltage of point (A) GND Voltage of point (B) GND − V bias Figure 7 Wave Form 5 TB2904HQ(o) DC Voltage (+) Amp (at leak (normal DC voltage) CC/2 DC Voltage (−) Amp (at short) (R Offset voltage (at leak or short) L.P.F. To CPU B Threshold level (R V CC/2 Threshold level ( 2004-03- ...

Page 6

... The current more than 4 A flows into the speaker and the speaker is burned. Current into a speaker Less than 4A Note appeared by biased input DC voltage (For example, large leakage of the input capacitor, short-circuit between copper patterns of PCB.) (in case of rare short circuit of speaker) Operating point of protector Speaker Impedance About 1 Ω 4 Ω Figure 8 6 TB2904HQ(o) 2004-03-26 ...

Page 7

... High pop noise. Duration until Low pop noise. Duration until muting function is turned muting function is turned ON/OFF is short ON/OFF is long Power supply ripple filtering Pop noise is suppressed when C1:C6 = 1:4 7 TB2904HQ(o) Notes value Pop noise is generated when Pop noise is generated when ...

Page 8

... SB  POWER: OFF SB  MUTE: OFF M  kΩ MUTE: ON MUTE: ON  ATT M = 7.75 Vrms→Mute: OFF V OUT 8 TB2904HQ(o) Min Typ. Max  170 340   43   39   26   0.015 0. −1 ...

Page 9

... OUT1 (−) OUT2 (+) IN2 PW-GND2 OUT2 (−) OUT3 (+) IN3 PW-GND3 OUT3 (−) OUT4 (+) IN4 PW-GND4 OUT4 (−) OFF-SET RIP STBY MUTE DET kΩ TB2904HQ(o) ±1.0 ±1.5 ±2 ...

Page 10

... Hz : ~30 kHz 1kHz 10 10 kHz : 400 Hz kHz : 400 Hz 0.5 0.3 0.1 0.05 0.03 0.01 0.005 0.003 0.001 30 50 100 0.1 0.3 10 TB2904HQ(o) THD – P (ch2) OUT : 400 Hz~30 kHz 20 kHz 10 kHz 0 100 Output power P (W) OUT THD – P (ch4) OUT : 400 Hz~30 kHz 20 kHz 10 kHz ...

Page 11

... 13 Ω kHz Filter 400 Hz~30 kHz 0.5 0.3 16.0 V 0.1 0.05 0.03 0.01 0.005 0.003 0.001 30 50 0.1 0.3 100 11 TB2904HQ(o) THD – P (ch2) OUT 13 9.0 V 16 100 Output power P (W) OUT THD – P (ch4) OUT 13 9.0 V 16 ...

Page 12

... P OUT = filter 0.3 2ch 0.1 1ch 0.03 0.01 0.003 0.001 0.01 0.1 100 k frequency f (Hz 13 Ω Vrip = 0.775 Vrms (0dBm) −20 −40 4ch −60 −80 100 0.01 0.1 frequency f (Hz) 12 TB2904HQ(o) THD – f 3ch 4ch 1 10 100 R.R. – f 1ch 3ch 2ch 1 10 100 2004-03-26 ...

Page 13

... kHz 120 100 TB2904HQ(o) V – P (ch2) IN OUT 100 Hz 10 kHz 1 kHz kHz 13 Ω No filter Input voltage V (Vrms – P (ch4) IN OUT 100 Hz 10 kHz ...

Page 14

... Ω 4ch drive 100 Output power P 14 TB2904HQ(o) C.T. – f (ch2) ch1 ch3 ch4 100 k frequency f (Hz) C.T. – f (ch4 100 k frequency f (Hz) P – OUT ...

Page 15

... Package Dimensions Weight: 7.7 g (typ.) 15 TB2904HQ(o) 2004-03-26 ...

Page 16

... The product is often the final stage (the external output stage circuit. Substandard performance or malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the product. 16 TB2904HQ(o) 030619EBF 2004-03-26 ...

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