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Номер произв	TB2938HQ
Описание	Maximum Power 49W BTL x 4-ch Audio Power IC
Производители	Toshiba
логотип
1Page No Preview Available ! Bi-CMOS Linear Integrated Circuit Silicon Monolithic TB2938HQ TB2938HQ Maximum Power 49W BTL  4-ch Audio Power IC 1. Description The TB2938HQ is a four-channel BTL power amplifier for car audio applications. This IC has a pure complementary P-ch and N-ch DMOS output stage, offering maximum output power (POUT MAX) of 49W. It includes a standby switch, mute function and various protection features. 2. Applications Power IC developed for car audio applications. Weight: 7.7 g (typ.) 3. Features  High output power, low distortion, and low noise property (for details, refer to the Table 3-1)  Built-in various detection function (Output DC offset detection, Output short, Output layer short) (pin25)  Built-in various mute functions (low voltage, standby on/off) (pin22)  Built-in standby switch (pin4)  Built-in mute switch (pin22)  Start stop Cruising corresponded (at Vcc=6V)  Built-in various protection circuits (thermal shut down, over-voltage, short to GND, short to VCC, and output to output short, speaker current limiting) Table 3-1 Typical Characteristics (Note1,Note2) Condition Typ. Unit Output power (POUT) VCC = 15.2 V, JEITA max 49 VCC = 14.4 V, JEITA max 44 VCC = 14.4 V, THD = 10% 29 THD = 10% 24 W Total harmonic distortion (THD) POUT = 5 W 0.01 % Output noise voltage (VNO) (Rg = 0 Ω), BW = 20 Hz to 20 kHz 50 µV Operating Supply voltage range (VCC) RL = 4 Ω 6 to 18 V Note1: Typical test conditions: VCC = 13.2 V, f = 1 kHz, RL = 4 Ω, GV = 26 dB, Ta = 25°C; unless otherwise specified. Note2: Rg: signal source resistance 1 2011-11-08 No Preview Available ! TB2938HQ 4. Block Diagram 10 Ripple C1 11 IN1 16 TAB VCC2 20 VCC1 B 9 OUT1 () 8 PW-GND1 OUT1 () 7 RL C1 12 IN2 13 Pre-GND 5 OUT2 () 2 PW-GND2 3 OUT2 () RL C1 15 IN3 C6 16 AC-GND 17 OUT3 () PW-GND3 18 OUT3 () 19 RL C1 14 IN4 5V Play Mute R1 4 Stby 22 Mute 21 OUT4 () 24 PW-GND4 23 OUT4 () RL Det 25 Some of the functional blocks, circuits or constants may be omitted from the block diagram or simplified for explanatory purposes.In the following explanation, a "channel" is a circuit which consists of INx, OUTx (+), OUTx (-), and PW-GNDx. (x:1 to 4) 2 2011-11-08 No Preview Available ! 5. Pin Configuration and Function Descriptions 5.1 Pin Configuration (top view) TB2938HQ Det Pw-GND4 OUT4(－) Mute OUT4(＋) Vcc１ OUT3(－) PW-GND3 OUT3(＋) AC-GND IN3 IN4 Pre－GND IN2 IN1 Ripple OUT１(＋) PW-GND1 OUT1(－) Vcc2 OUT2(＋) Stby OUT2(－) PW-GND2 TAB 3 2011-11-08
Всего страниц	26 Pages
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