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| TB2904HQ(o) TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic TB2904HQ (o) Maximum Power 43 W BTL x 4-ch Audio Power IC The TB2904H (o) is 4-ch BTL audio amplifier for car audio applications. This IC can generate higher power: POUT MAX = 43 W as it includes the pure complementary P-ch and N-ch DMOS output stage. It is designed to yield low distortion ratio for 4-ch BTL audio power amplifier, built-in standby function, muting function, and various kinds of protectors. Additionally, Off-set detector is built in. Features * High power output : POUT MAX (1) = 43 W (typ.) P (VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 ) : POUT MAX (2) = 39 W (typ.) (VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 ) : POUT (1) = 26 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 ) Low distortion ratio: THD = 0.015% (typ.) (VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 ) Low noise: VNO = 90 Vrms (typ.) (VCC = 13.2 V, Rg = 0 , BW = 20 Hz to 20 kHz, RL = 4 ) Built-in standby switch function (pin 4) Built-in muting function (pin 22) Built-in Off-set detection function (pin 25) Weight: 7.7 g (typ.) * * * * * * * Built-in various protection circuits: Thermal shut down, overvoltage, out to GND, out to VCC, out to out short, speaker burned Operating supply voltage: VCC (opr) = 9 to 18 V (RL = 4 ) 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 product or equipment. Note 3: 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. 1 2004-03-26 TB2904HQ(o) Block Diagram C5 1 TAB 20 VCC1 6 VCC2 OUT1 (+) 9 C1 11 IN1 PW-GND1 8 OUT1 (-) 7 RL OUT2 (+) 12 IN2 5 RL C1 PW-GND2 2 OUT2 (-) 3 C6 16 AC-GND OUT3 (+) 15 IN3 17 RL C1 PW-GND3 18 OUT3 (-) 19 OUT4 (+) 14 IN4 21 RL C1 PW-GND4 24 OUT4 (-) 23 PRE-GND 13 RIP 10 C2 STBY 4 OFF-SET MUTE DET 25 22 C4 R1 5V PLAY MUTE : PRE-GND : PW-GND Note: Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purpose. C3 2 2004-03-26 TB2904HQ(o) Caution and Application Method (Description is made only on the single channel) 1. Voltage Gain Adjustment This IC has no NF (negative feedback) Pins. Therefore, the voltage gain can not be adjusted, but it makes the device a space and total costs saver. Amp. 2A Amp. 1 Input Amp. 2B Figure 1 Block Diagram The voltage gain of amp.1 : GV1 = 0dB The voltage gain of amp.2A, B : GV2 = 20dB The voltage gain of BTL connection : GV (BTL) = 6dB Therefore, the total voltage gain is decided by expression below. GV = GV1 + GV2 + GV (BTL) = 0 + 20 + 6 = 26dB 2. Standby SW Function (pin 4) By means of controlling pin 4 (standby pin) to High and Low, the power supply can be set to ON and OFF. The threshold voltage of pin 4 is set at about 3 VBE (typ.), and the power supply current is about 2 A (typ.) in the standby state. VCC ON Power OFF 4 10 k 2 VBE to BIAS CUTTING CIRCUIT Control Voltage of Pin 4: VSB Stand-by ON OFF Power OFF ON VSB (V) 0 to 1.5 3.5 to 6 V When changing the time constant of pin 4, check the pop noise. Figure 2 With pin 4 set to High, Power is turned ON Advantage of Standby SW (1) (2) Since VCC can directly be controlled to ON or OFF by the microcomputer, the switching relay can be omitted. Since the control current is microscopic, the switching relay of small current capacity is satisfactory for switching. 3 2004-03-26 TB2904HQ(o) Large current capacity switch Battery Relay Battery VCC VCC - Conventional Method - From microcomputer Small current capacity switch Battery From microcomputer Battery Stand-By VCC Stand-By VCC - Standby Switch Method - Figure 3 3. Muting Function (pin 22) Audio muting function is enabled when pin 22 is Low. When the time constant of the muting function is determined by R1 and C4, it should take into account the pop noise. The pop noise, which is generated when the power or muting function is turned ON/OFF, will vary according to the time constant. (Refer to Figure 4 and Figure 5.) The pin 22 is designed to operate off 5 V so that the outside pull-up resistor R1 is determined on the basic of this value: ex) When control voltage is changed in to 6 V from 5 V. 6 V/5 V x 47 k = 56 k Additionally, as the VCC is rapidly falling, the IC internal low voltage muting operates to eliminate the large pop noise basically. The low voltage muting circuit pull 200 A current into the IC so that the effect of the internal low voltage muting does not become enough if the R1 is too small value. To obtain enough operation of the internal low voltage muting, a series resistor, R1 at pin 22 should be 47 k or more. ATT - VMUTE 20 0 VCC = 13.2 V f = 1 kHz RL = 4 Vout = 7.75 Vrms (20dBm) (dB) Mute attenuation ATT -20 -40 -60 -80 -100 -120 0 5V 1 k Mute ON/OFF control R1 22 C4 0.5 1 1.5 2 2.5 3 3.5 Pin 22 control voltage: VMUTE (V) Figure 4 Muting Function 4 Figure 5 Mute Attenuation - VMUTE (V) 2004-03-26 TB2904HQ(o) 4. Off-set detection function In case of Appearing output offset voltage by Generating a Large Leakage Current on the input Capacitor etc. V DC Voltage (+) Amp (at leak) (RS1) VCC/2 (normal DC voltage) Vref Leak or short RS1 Elec. vol RS2 - Vbias 25 A L.P.F. B To CPU 5V Vref/2 + DC Voltage (-) Amp (at short) (RS2) Offset voltage (at leak or short) Figure 6 Application and Detection Mechanism Threshold level (RS1) (+) Amp output VCC/2 Threshold level (RS2) GND t Voltage of point (A) GND t Voltage of point (B) GND RS2 t Figure 7 Wave Form 5 2004-03-26 TB2904HQ(o) 5. Prevention of speaker burning accident (in case of rare short circuit of speaker) When the direct current resistance between OUT+ and OUT- terminal becomes 1 or less and output current over 4 A flows, this IC makes a protection circuit operate and suppresses the current into a speaker. This system makes the burning accident of the speaker prevent as below mechanism. Current into a speaker Operating point of protector Less than 4A Speaker Impedance About 1 4 Figure 8 Note 1: It is appeared by biased input DC voltage (For example, large leakage of the input capacitor, short-circuit between copper patterns of PCB.) 6 2004-03-26 TB2904HQ(o) 6. Pop Noise Suppression Since the AC-GND pin (pin 16) is used as the NF pin for all amps, the ratio between the input capacitance (C1) and the AC-to-GND capacitance (C6) should be 1:4. Also, if the power is turned OFF before the C1 and C6 batteries have been completely charged, pop noise will be generated because of the DC input unbalance. To counteract the noise, it is recommended that a longer charging time be used for C2 as well as for C1 and C6. Note that the time which audio output takes to start will be longer, since the C2 makes the muting time (the time from when the power is turned ON to when audio output starts) is fix. The pop noise which is generated when the muting function is turned ON/OFF will vary according to the time constant of C4. The greater the capacitance, the lower the pop noise. Note that the time from when the mute control signal is applied to C4 to when the muting function is turned ON/OFF will be longer. 7. External Component Constants Component Recommended Name Value Effect Purpose Lower than recommended value Cut-off frequency is increased Powering ON/OFF is faster Higher than recommended value Cut-off frequency is reduced Powering ON/OFF takes longer Notes C1 0.22 F 10 F 0.1 F To eliminate DC Pop noise is generated when VCC is ON C2 To reduce ripple To provide sufficient oscillation margin To reduce pop noise Ripple filter NF for all outputs C3 Reduces noise and provides sufficient oscillation margin 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 Pop noise is generated when VCC is ON C4 C5 C6 1 F 3900 F 1 F Note: If recommended value is not used. 7 2004-03-26 TB2904HQ(o) Maximum Ratings (Ta = 25C) Characteristics Peak supply voltage (0.2 s) DC supply voltage Operation supply voltage Output current (peak) Power dissipation Operation temperature Storage temperature Symbol VCC (surge) VCC (DC) VCC (opr) IO (peak) PD (Note 2) Topr Tstg Rating 50 28 18 9 125 -40 to 85 -55 to 150 Unit V V V A W C C Note 2: Package thermal resistance j-T = 1C/W (typ.) (Ta = 25C, with infinite heat sink) The absolute maximum ratings of a semiconductor device are a set of specified parameter values, which must not be exceeded during operation, even for an instant. If any of these rating would be exceeded during operation, the device electrical characteristics may be irreparably altered and the reliability and lifetime of the device can no longer be guaranteed. Moreover, these operations with exceeded ratings may cause break down, damage and/or degradation to any other equipment. Applications using the device should be designed such that each maximum rating will never be exceeded in any operating conditions. Before using, creating and/or producing designs, refer to and comply with the precautions and conditions set forth in this documents. Electrical Characteristics Characteristics Quiescent current (unless otherwise specified, VCC = 13.2 V, f = 1 kHz, RL = 4 , Ta = 25C) Symbol ICCQ POUT MAX (1) Output power POUT MAX (2) POUT (1) POUT (2) Total harmonic distortion Voltage gain Voltage gain ratio Output noise voltage THD GV GV VNO (1) VNO (2) Ripple rejection ratio Cross talk Output offset voltage Input resistance Standby current Standby control voltage R.R. C.T. VOFFSET RIN ISB VSB H VSB L Mute control voltage VM H VM L Mute attenuation ATT M Test Circuit VIN = 0 VCC = 14.4 V, max POWER VCC = 13.7 V, max POWER VCC = 14.4 V, THD = 10% THD = 10% POUT = 5 W VOUT = 0.775 Vrms VOUT = 0.775 Vrms Rg = 0 , DIN45405 Rg = 0 , BW = 20 Hz~20 kHz frip = 100 Hz, Rg = 620 Vrip = 0.775 Vrms Rg = 620 VOUT = 0.775 Vrms Standby condition POWER: ON POWER: OFF MUTE: OFF MUTE: ON, R1 = 47 k MUTE: ON VOUT = 7.75 VrmsMute: OFF Test Condition Min 21 24 -1.0 50 -150 3.5 0 3.0 0 85 Typ. 170 43 39 26 23 0.015 26 0 100 90 60 70 0 90 2 100 Max 340 0.15 28 1.0 200 150 10 6.0 V 1.5 6.0 V 0.5 dB dB dB mV k A % dB dB Vrms W Unit mA 8 2004-03-26 TB2904HQ(o) Offset detection Detection threshold voltage Voff-set Rpull-up = 47 k, +V = 5.0V Based on output DC voltage 1.0 1.5 2.0 V Test Circuit 3900 F 1 TAB 20 VCC1 6 VCC2 OUT1 (+) 9 0.22 F C1 11 IN1 PW-GND1 8 OUT1 (-) 7 RL OUT2 (+) 0.22 F C1 12 IN2 5 RL PW-GND2 2 OUT2 (-) 3 1 F C6 16 AC-GND OUT3 (+) 3 0.22 F 17 RL C1 15 IN3 PW-GND3 18 OUT3 (-) 19 OUT4 (+) 0.22 F C1 14 IN4 21 RL PW-GND4 24 OUT4 (-) 23 PRE-GND 13 RIP 10 10 F C2 STBY 4 OFF-SET MUTE DET 25 22 47 k 1 F C4 R1 5V PLAY MUTE : PRE-GND : PW-GND Components in the test circuits are only used to obtain and confirm the device characteristics. These components and circuits do not warrant to prevent the application equipment from malfunction or failure. C3 0.1 F C5 9 2004-03-26 TB2904HQ(o) THD - POUT (ch1) 100 VCC = 13.2 V 50 RL = 4 30 Filter 100 Hz : ~30 kHz 10 5 1kHz : 400 Hz~30 kHz 10 5 10 kHz : 400 Hz~ 20 kHz : 400 Hz~ 50 100 VCC = 13.2 V RL = 4 30 Filter THD - POUT (ch2) 100 Hz : ~30 kHz 1kHz : 400 Hz~30 kHz 10 kHz : 400 Hz~ 20 kHz : 400 Hz~ (%) 3 (%) 3 Total harmonic distortion THD 1 0.5 0.3 10 kHz 0.1 0.05 0.03 1 kHz 20 kHz Total harmonic distortion THD 1 0.5 0.3 10 kHz 0.1 0.05 0.03 1 kHz 20 kHz f = 100 Hz 0.01 0.005 0.003 0.01 0.005 0.003 f = 100 Hz 0.001 0.1 0.3 0.5 1 3 5 10 30 50 100 0.001 0.1 0.3 0.5 1 3 5 10 30 50 100 Output power POUT (W) Output power POUT (W) THD - POUT (ch3) 100 VCC = 13.2 V 50 RL = 4 30 Filter 100 Hz : ~30 kHz 10 5 1kHz : 400 Hz~30 kHz 10 5 10 kHz : 400 Hz~ 20 kHz : 400 Hz~ 50 100 VCC = 13.2 V RL = 4 30 Filter THD - POUT (ch4) 100 Hz : ~30 kHz 1kHz : 400 Hz~30 kHz 10 kHz : 400 Hz~ 20 kHz : 400 Hz~ (%) 3 (%) 3 Total harmonic distortion THD 1 0.5 0.3 10 kHz 0.1 0.05 0.03 1 kHz 20 kHz Total harmonic distortion THD 1 0.5 0.3 10 kHz 20 kHz 0.1 0.05 0.03 1 kHz f = 100 Hz 0.01 0.005 0.003 0.01 0.005 0.003 f = 100 Hz 0.001 0.1 0.3 0.5 1 3 5 10 30 50 100 0.001 0.1 0.3 0.5 1 3 5 10 30 50 100 Output power POUT (W) Output power POUT (W) 10 2004-03-26 TB2904HQ(o) THD - POUT (ch1) 100 50 30 VCC = 13.2 V RL = 4 f = 1 kHz Filter 10 5 400 Hz~30 kHz 13.2 V 10 5 100 50 30 VCC = 13.2 V RL = 4 f = 1 kHz Filter THD - POUT (ch2) 13.2 V 400 Hz~30 kHz (%) 3 (%) 3 Total harmonic distortion THD 1 0.5 0.3 VCC = 9.0 V 16.0 V Total harmonic distortion THD 1 0.5 0.3 VCC = 9.0 V 16.0 V 0.1 0.05 0.03 0.1 0.05 0.03 0.01 0.005 0.003 0.01 0.005 0.003 0.001 0.1 0.3 0.5 1 3 5 10 30 50 100 0.001 0.1 0.3 0.5 1 3 5 10 30 50 100 Output power POUT (W) Output power POUT (W) THD - POUT (ch3) 100 50 30 VCC = 13.2 V RL = 4 `'e ch IY"u--I f = 1 kHz Filter 10 5 400 Hz~30 kHz 10 5 13.2 V 100 50 30 VCC = 13.2 V RL = 4 f = 1 kHz Filter THD - POUT (ch4) 13.2 V 400 Hz~30 kHz (%) 3 (%) 3 Total harmonic distortion THD 1 0.5 0.3 VCC = 9.0 V 16.0 V Total harmonic distortion THD 1 0.5 0.3 VCC = 9.0 V 16.0 V 0.1 0.05 0.03 0.1 0.05 0.03 0.01 0.005 0.003 0.01 0.005 0.003 0.001 0.1 0.3 0.5 1 3 5 10 30 50 100 0.001 0.1 0.3 0.5 1 3 5 10 30 50 100 Output power POUT (W) Output power POUT (W) 11 2004-03-26 TB2904HQ(o) muteATT - f 0 VCC = 13.2 V RL = 4 -20 VOUT = 7.75 Vrms (20dBm) -40 3 1 0.3 0.1 1ch 0.03 0.01 4ch 0.003 0.001 0.01 VCC = 13.2 V RL = 4 POUT = 5 W No filter 2ch THD - f Mute attenuation muteATT (dB) -60 Total harmonic distortion THD (%) 3ch -80 1 ch ~4ch -100 -120 10 100 1k 10 k 100 k 0.1 1 10 100 frequency f (Hz) frequency f (Hz) GV - f 40 0 VCC = 13.2 V R.R. - f (dB) RL = 4 Vrip = 0.775 Vrms (0dBm) -20 GV (dB) 30 1 ch ~4ch Ripple rejection ratio R.R. Voltage gain 20 -40 4ch 1ch 3ch -60 2ch 10 VCC = 13.2 V RL = 4 VOUT = 0.775 Vrms (0dBm) 0 0.01 0.1 1 10 100 -80 0.01 0.1 1 10 100 frequency f (Hz) frequency f (Hz) 12 2004-03-26 TB2904HQ(o) VIN - POUT (ch1) 40 100 Hz 40 VIN - POUT (ch2) 100 Hz (W) 30 (W) 10 kHz f = 20 kHz 1 kHz 30 10 kHz f = 20 kHz 1 kHz Output power POUT 20 Output power POUT 20 10 VCC = 13.2 V RL = 4 No filter 0 0 2 4 6 8 10 10 VCC = 13.2 V RL = 4 No filter 0 0 2 4 6 8 10 Input voltage VIN (Vrms) Input voltage VIN (Vrms) VIN - POUT (ch3) 40 100 Hz 40 VIN - POUT (ch4) 100 Hz (W) 30 (W) 10 kHz f = 20 kHz 1 kHz 30 10 kHz f = 20 kHz 1 kHz Output power POUT 20 Output power POUT 20 10 VCC = 13.2 V RL = 4 No filter 0 0 2 4 6 8 10 10 VCC = 13.2 V RL = 4 No filter 0 0 2 4 6 8 10 Input voltage VIN (Vrms) Input voltage VIN (Vrms) ICCQ - VCC 2000 RL = VIN = 0 V 160 120 PDMAX - Ta Allowable power dissipation PDMAX (W) (1) INFINITE HEAT SINK RJC = 1C/W 100 (2) HEAT SINK (RHS = 3.5C/W RJC + RHS = 4.5C/W (3) NO HEAT SINK RJA = 39C/W (1) 60 ICCQ (mA) 80 120 Quiescent Current 80 40 40 20 (3) 0 0 25 50 75 (2) 0 0 5 10 15 20 25 100 125 150 Supply voltage VCC (V) Ambient temperature Ta (C) 13 2004-03-26 TB2904HQ(o) C.T. - f (ch1) 0 VCC = 13.2 V RL = 4 VOUT = 0.775 Vrms (0dBm) RG = 620 0 C.T. - f (ch2) VCC = 13.2 V RL = 4 VOUT = 0.775 Vrms (0dBm) RG = 620 Cross talk C.T. (dB) -40 ch2 ch3 -60 ch4 Cross talk C.T. (dB) -20 -20 -40 ch1 -60 ch3 ch4 -80 10 100 1k 10 k 100 k -80 10 100 1k 10 k 100 k frequency f (Hz) frequency f (Hz) C.T. - f (ch3) 0 VCC = 13.2 V RL = 4 VOUT = 0.775 Vrms (0dBm) RG = 620 0 C.T. - f (ch4) VCC = 13.2 V RL = 4 VOUT = 0.775 Vrms (0dBm) RG = 620 Cross talk C.T. (dB) -40 ch1 ch2 -60 ch4 Cross talk C.T. (dB) -20 -20 -40 ch2 -60 ch1 ch3 -80 10 100 1k 10 k 100 k -80 10 100 1k 10 k 100 k frequency f (Hz) frequency f (Hz) VNO - Rg 300 VCC = 13.2 V 80 f = 1 kHz RL = 4 4ch drive 60 RL = 4 Filter: 20 Hz~20 kHz 200 PD - POUT (Vrms) 18 V Output noise voltage VNO Power dissipation PD (W) 16 V 40 100 1ch~4ch 13.2 V 20 9.0 V 0 10 100 1k 10 k 100 k 0 0 5 10 15 20 25 30 Signal source resistance Rg () Output power POUT (W) 14 2004-03-26 TB2904HQ(o) Package Dimensions Weight: 7.7 g (typ.) 15 2004-03-26 TB2904HQ(o) About solderability, following conditions were confirmed * Solderability (1) Use of Sn-63Pb solder Bath * solder bath temperature = 230C * dipping time = 5 seconds * the number of times = once * use of R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder Bath * solder bath temperature = 245C * dipping time = 5 seconds * the number of times = once * use of R-type flux RESTRICTIONS ON PRODUCT USE * The information contained herein is subject to change without notice. 030619EBF * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. * TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations. * This product generates heat during normal operation. However, substandard performance or malfunction may cause the product and its peripherals to reach abnormally high temperatures. The product is often the final stage (the external output stage) of a 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 2004-03-26 |
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