TB2941HQ Bi-CMOS Linear Integrated Circuit Silicon Monolithic TB2941HQ Maximum Power 49 W BTL 4ch Audio Power Amp IC 1. Description The TB2941HQ is a power IC with built-in four-channel BTL amplifier developed for car audio application. The maximum output power POUT is 49 W using a pure complementary P-ch and N-ch DMOS output stage. In addition, a standby switch function, a mute function, an output offset voltage detection function, a high-side switch function and various protection features are included. Weight: 7.7 g (typ.) 2. Applications Power Amp IC developed for car audio applications. 3. Features High output power, low distortion, and low noise property Table 1 Typical Characteristics (for details, refer to the Table 1 Typical Characteristics) (Note1) Built-in high-side switch function (Pin 25) (Note2) Built-in output DC offset voltage detection function Test condition Typ. Unit (Pin 1, Pin 25) (Note2) Output power (P ) Built-in mute function. (Pin 22) OUT Built-in auto mute functions (for low VCC and standby-Off) V = 15.2 V, JEITA max 49 CC Built-in standby switch function (Pin 4) V = 13.7 V, JEITA max 40 W CC Built-in various protection circuits THD = 10% 24 (thermal shut down, over-voltage, short to GND, short to VCC, and Output power (P ) (R = 2 ) OUT L output to output short) V = 13.7 V, JEITA max 73 CC W THD = 10% 45 Total harmonic distortion (THD) P = 4 W 0.006 % OUT Output noise voltage (V ) (R = 0 ) g NO Filter: DIN AUDIO 65 Vrms Operating Supply voltage range (V ) CC R = 4 6 to 18 L V R = 2 6 to 16 L Note1: Typical test conditions: V = 13.2 V, f = 1 kHz, R = 4 , Ta = 25C unless otherwise specified. CC L R : signal source resistance g Note2: A build-in high-side switch or a built-in output DC offset voltage detection function can be selected for pin 25 by the voltage into MUTE pin (pin 22). 2014-2018 2018-03-05 1 Toshiba Electronic Devices & Storage Corporation TB2941HQ 4. Block Diagram +B 10 6 20 Ripple VCC2 VCC1 OUT1(+) 11 9 IN1 C : 0.22 F 1 PW-GND1 8 R L OUT1(-) 7 AC-GND C : 0.22 F IN2 1 OUT2(+) 12 5 PW-GND2 2 R L 13 Pre-GND OUT2(-) 3 AC-GND C : 0.22 F IN3 1 OUT3(+) 15 17 PW-GND3 18 R L C : 1 F 6 16 AC-GND OUT3(-) 19 AC-GND C : 0.22 F IN4 1 OUT4(+) 14 21 PW-GND4 24 R L 5 V 4 Stby Play OUT4(-) 23 R : 47 k 1 AC-GND Mute 22 MUTE H-SW/OffsetDet 25 Offset Det 1 Some of the functional blocks, circuits or constants in the block diagram may have been omitted or simplified for clarity. 2018-03-05 2 C : 1 F C : 10 F 4 2 C : 5 3900 F C : 0.1 F 3