TB2903HQ 데이터 시트보기 (PDF) - Toshiba

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TB2903HQ

Maximum Power 47 W BTL ×4-ch Audio Power IC

Toshiba 

TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic

TB2903HQ

TB2903HQ

Maximum Power 47 W BTL × 4-ch Audio Power IC

The TB2903HQ is 4-ch BTL audio amplifier for car audio

applications.

This IC can generate higher power: POUT MAX = 47 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

Weight: 7.7 g (typ.)

• High power output

: POUT MAX (1) = 47 W (typ.)

(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω)

: POUT MAX (2) = 43 W (typ.)

(VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 Ω)

: POUT (1) = 29 W (typ.)

(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 Ω)

: POUT (2) = 25 W (typ.)

(VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 Ω)

• Low distortion ratio: THD = 0.015% (typ.)

(VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 Ω)

• Low noise: VNO = 90 µVrms (typ.)

(VCC = 13.2 V, Rg = 0 Ω, BW = 20 Hz~20 kHz, RL = 4 Ω)

• 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 VCC, out to out short

• Operating supply voltage: VCC (opr) = 9~18 V (RL = 4 Ω)

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

2006-04-28

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