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TB2904 HQ, TB2904HQ, TB2905HQ

Table of contents:
Info of TB2904 HQ
Info of TB2904HQ
Info of TB2905HQ

TB2904 HQ, TB2904HQ, TB2905HQ Selling Leads, Datasheet

MFG:TOS Package Cooled:SQL-25 D/C:08+/09+

TB2904 HQ, TB2904HQ, TB2905HQ Datasheet download

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Part Number: TB2904 HQ

MFG: TOS

Package Cooled: SQL-25

D/C: 08+/09+

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TB2904HQ General Description

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.

TB2904HQ Maximum Ratings

Characteristics	Symbol	Rating	Unit
Peak supply voltage (0.2 s)	V_CC (surge)	50	V
DC supply voltage	V_CC (DC)	28	V
Operation supply voltage	V_CC (opr)	18	V
Output current (peak)	I_O (peak)	9	A
Power dissipation	P_D (Note 2)	125	W
Operation temperature	T_opr	−40 to 85
Storage temperature	T_stg	−55 to 150

Note 2: Package thermal resistance j-T = 1/W (typ.) (Ta = 25, 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 maximumrating 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.

TB2904HQ Features

• High power OUTput
: P_OUT MAX (1) = 43 W (typ.) P (V_CC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 )
: P_OUT MAX (2) = 39 W (typ.) (V_CC= 13.7 V, f = 1 kHz, JEITA max, RL = 4 )
: P_OUT (1) = 26 W (typ.) (V_CC= 14.4 V, f = 1 kHz, THD = 10%, RL = 4 )
: P_OUT (2) = 23 W (typ.) (V_CC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 )
• Low distortion ratio: THD = 0.015% (typ.) (V_CC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 )
• Low noise: VNO = 90 Vrms (typ.) (V_CC= 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)
• Built-in various protection circuits: Thermal shut down, overvoltage, OUT to GND, OUT to V_CC, OUT to OUT short, speaker burned
• Operating supply voltage: V_CC(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.

TB2905HQ General Description

The TB2905HQ is a high-efficiency class KB power amplifier IC developed for car audio applications that incorporates four BTL amplifier channels.

It employs a pure complementary DMOS output stage consisting of P-ch upper and N-ch lower sections, offering a maximum output power (POUT) of 47 W.

Class KB (keyed BTL) amplifiers exhibit less than half the heat generation of comparable class AB solutions under normal operating conditions. Therefore, it is possible to design a smaller heatsink and maintain lower internal temperature in the car audio sets.

Additionally, the TB2905HQ has many built-in functions for car audio, such as standby switching, muting, protective circuits, and self diagnosis.

TB2905HQ Maximum Ratings

Characteristics	Symbol	Rating	Unit
Peak supply voltage (0.2 s)	V_{CC (surge)}	50	V
DC supply voltage	V_{CC (DC)}	25	V
Operating supply voltage	V_{CC (opr)}	18	V
Output current (peak)	I_O (peak)	9	A
Power dissipation	P_D (Note 5)	125	W
Operating temperature	T_opr	−40~85
Storage temperature	T_stg	−55~150

Note 5: Package thermal resistance (_jT = 1/W) (T_a = 25, 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.
Exposure to conditions beyond those listed above may cause permanent damage to the device or affect device
reliability, which could increase potential risks of personal injury due to IC blowup and/or burning.
The equipment manufacturer should design so that no maximum rating value is exceeded with respect to
current, voltage, power dissipation, temperature, etc.
Ensuring that the parameter values remain within these specified ranges during device operation will help to
ensure that the integrity of the device is not compromised.

TB2905HQ Features

• High output power
   : POUT MAX (1) = 47 W (typ.)
     (V_CC = 14.4 V, f = 1 kHz, JEITA _max, R_L = 4 )
   : POUT MAX (2) = 43 W (typ.)
     (V_CC = 13.7 V, f = 1 kHz, JEITA _max, R_L = 4 )
   : POUT Pout MAX (3) = 80 W (typ.)
     (V_CC = 14.4V, f = 1 kHz, JEITA _max, R_L = 2 )
   : POUT (1) = 29 W (typ.)
     (V_CC = 14.4 V, f = 1 kHz, THD = 10%, R_L = 4 )
   : POUT (2) = 25 W (typ.)
     (V_CC = 13.2 V, f = 1 kHz, THD = 10%, R_L = 4 )
   : POUT (3) = 55 W (typ.)
     (V_CC = 14.4 V, f = 1 kHz, THD = 10%,R_L = 2 )
• Low distortion ratio
   : THD = 0.03% (typ.)
     (V_CC = 13.2 V, f = 1 kHz, G_V = 26dB, P_OUT = 2 W, R_L = 4 )
• Low noise
   : VNO = 120 V_rms (typ.)
     (V_CC = 13.2 V, G_V = 26dB, R_g = 0 , B_W = 20 Hz~20 kHz, R_L = 4 )
• Built-in standby (pin 4) and muting (pin22) functions
• Built-in offset/clipping detection (pin 25)
• Protective circuits: Thermal shutdown, overvoltage, out to GND, out to VCC, out to out short
• Operating supply voltage: V_CC _(opr) = 9 to 18 V (R_L = 4 )

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