TPA3121D2

Features:

` 10-W/Ch Into an 8- Load From a 24-V Supply
` 15-W/Ch into a 4- Load from a 22-V Supply
` 30-W/Ch into a 8- Load from a 22-V Supply
` Operates From 10 V to 26 V
` Can Run From +24 V LCD Backlight Supply
` Efficient Class-D Operation Eliminates Need for Heat Sinks
` Four Selectable, Fixed-Gain Settings
` Internal Oscillator (No External Components Required)
` Single-Ended Analog Inputs
` Thermal and Short-Circuit Protection With Auto Recovery
` Space-Saving Surface Mount 24-Pin TSSOP Package
` Advanced Power-Off Pop Reduction 


Application

· Flat Panel Televisions
· DLP^® TVs
· CRT TVs
· Powered Speakers 


Pinout




Specifications

over operating free-air temperature range (unless otherwise noted) ⁽¹⁾

		VALUE	UNIT
VCC  Supply voltage	AVCC, PVCC	0.3 to 30	V
VI     Logic input voltage	SD, MUTE, GAIN0, GAIN1	0.3 to VCC + 0.3	V
VIN    Analog input voltage	RIN, LIN	0.3 to 7	V
Continuous total power dissipation		See Dissipation Rating Table
TA     Operating free-air temperature range		40 to 85
TJ     Operating junction temperature range		40 to 150
Tstg  Storage temperature range		65 to 150
RL    Load resistance (minimum value)	SE Output Configuration	3.2
	BTL Output Configuration	6.4
ESD  Electrostatic Discharge	Human body model (all pins)	±2	kV
	Charged-device model (all pins)	±500	V

(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device.

These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.


Description

The TPA3121D2 is a 15-W (per channel), efficient class-D audio power amplifier for driving stereo speakers in a single-ended configuration; or, a mono speaker in a bridge-tied-load configuration. The TPA3121D2 can drive stereo speakers as low as 4 . The efficiency of the TPA3121D2 eliminates the need for an external heat sink when playing music.The gain of the amplifier is controlled by two gain seledct pins. The gain selections are 20, 26, 32, and 36 dB.The patented start-up and shutdown sequences minimize pop noise in the speakers without additional circuitry