TB2936HQ – 49W X 4-ch BTL Audio Power IC

Part Number : TB2936HQ

Function : 49W X 4-ch BTL Audio Power IC

Manufactures : Toshiba

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TB2936HQ image

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Description :

TB2936HQ TOSHIBA Bi-CMOS Linear Integrated Circuit Silicon Monolithic TB2936HQ 49 W × 4-ch BTL Audio Power IC The TB2936HQ 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 49 W. It includes a standby switch, mute function and various protection features. Features • High output power • • • • • • • • • • • POUT MAX (1) = 49 W (typ.) (VCC = 15.2 V, f = 1 kHz, JEITA max, RL = 4 Ω) POUT MAX (2) = 43W (typ.) (VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω) POUT (1) = 26 W (typ.) (VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 Ω) POUT (2) = 23 W (typ.) (VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 Ω) Weight: 7.7 g (typ.) Low THD: 0.015% (typ.) (VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 Ω) Low noise: VNO = 160 μVrms (typ.) (VCC = 13.2 V, Rg = 0 Ω, BW = 20 Hz to 20 kHz, RL = 4 Ω) Standby switch (pin 4) Mute function (pin 22) Output DC offset detection and clip detection (pin 25) Various protection features Thermal overload; overvoltage; output short-circuits to GND, VCC and across the load; speaker current limiting Operating supply voltage: VCC (opr) = 8.0 to 18 V (RL = 4 Ω) Note 1: Install the device correctly. Otherwise, the device or system may be degraded, damaged or even destroyed. Note 2: The protection features are intended to avoid output short-circuits or other abnormal conditions temporarily. It is not guaranteed that they will prevent the IC from being damaged. Exposure to conditions beyond the guaranteed operating ranges may not activate the protection features, resulting in an IC damage due to output short-circuits. 1 2009-02-04 TB2936HQ Block Diagram +B C5 C2 10 Ripple C1 11 IN1 1 TAB 6 VCC2 20 VCC1 9 8 7 Out1 (+) PW-GND1 Out1 (−) C1 12 IN2 5 2 Out2 (+) PW-GND2 Out2 (−) 13 Pre-GND 3 C1 15 IN3 17 18 Out3 (+) PW-GND3 C6 16 AC-GND 19 Out3 (−) C1 14 IN4 21 24 Out4 (+) PW-GND4 Out4 (−) 5V Play Mute 4 Stby R1 C4 23 22 Mute Offset/short 25 Some of the functional blocks, circuits or constants may be omitted from the block diagram or simplified for explanatory purposes. C3 RL RL RL RL 2 2009-02-04 TB2936HQ Detailed Description (The following only describes one of the four channels, since all these channels are symmetrical.) 1. Standby Switch (pin 4) The power supply can be turned on or off via pin 4 (Stby). The threshold voltage of pin 4 is set at about 3 VBE (typ.). The power supply current is about 0.01 μA (typ.) in the standby state. VCC ON OFF Power 4 10 kΩ ≈ 2 VBE to Bias filter network Standby Control Voltage (VSB): Pin 4 Standby ON OFF Power OFF ON VSB (V) 0 to 0.9 2.9 to VCC Figure 1 Setting Pin 4 High Turns on Power Check the pop levels when the time constant of pin 4 is changed. Benefits of the Standby Switch (1) (2) VCC can be directly turned on or off by a microcontroller, eliminating the need for a switching relay. Since the control curre […]

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TB2936HQ Datasheet


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