TFA9842J

Common Mode Rejection Ratio (Min) :
Supply Current :
Mounting Style : SMD/SMT
Packaging : Tube
Output Power : 15 W
Maximum Operating Temperature : + 85 C
THD plus Noise : 0.05 %
Product : Class-AB
Output Type : 1-Channel Mono or 2-Channel Stereo
Available Set Gain : 26 dB
Package / Case : SOT-523
Operating Supply Voltage : 17 V
Maximum Power Dissipation : 35000 mW


Features:

·SE: 1 W to 7.5 W; BTL: 2 W to 15 W operation possibility
·Soft clipping
·Standby and mute mode
·No on/off switching plops
·Low standby current
·High supply voltage ripple rejection
·Outputs short-circuit protected to ground, supply and across the load
·Thermally protected
·Pin compatible with the TFA9841J and TFA9843J.


Application

·Television
·PC speakers
·Boom box
·Mini and micro audio receivers.


Pinout




Specifications

Symbol	Parameter	Conditions	Min	Max	Unit
VCC	supply voltage	operating	-0.3	+26	V
		no signal	-0.3	+28	V
VI	input voltage		-0.3	VCC + 0.3	V
IORM	repetitive peak output current		-	3	A
Tstg	storage temperature	non-operating	-55	+150	°C
Tamb	ambient temperature	operating	-40	+85	°C
Ptot	total power dissipation		-	35	W
VCC(sc)	supply voltage to guarantee short-circuit protection		-	24	V

Description

The TFA9842J contains two identical audio power amplifiers. The TFA9842J can be used as two Single-Ended (SE) channels with a fixed gain of 26 dB or one Bridge-Tied Load (BTL) channel with a fixed gain of 32 dB.

The TFA9842J comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9842J is pin compatible with the TFA9841J and TFA9843J.

The TFA9842J contains a unique protection circuit that is solely based on multiple temperature measurements inside the chip. This gives maximum output power for all supply voltages and load conditions with no unnecessary audio holes. Almost any supply voltage and load impedance combination can be made as long as thermal boundary conditions (number of channels used, external heatsink and ambient temperature) allow it.