The LTK8002D is a 3W, mono Class AB audio power amplifier chip. Operating voltage 2V-5V, in the way of BTL bridge connection, under 5V supply voltage, can provide a 4Ω load THD less than 10%, the average output power of 3.0W. In off mode, the current is typically less than 0.5uA.
    The LTK8002D is specifically designed to provide high-power, high-fidelity audio output, requiring only a few peripherals and operating at low voltage conditions (2V-5V). The LTK8002D does not require coupling capacitors, bootstrap capacitors or buffering networks, making it ideal for low-power systems with low volume.
    The LTK8002D is available in SOP-8 lead-free package.

LTK8002D Maximum rating (TA=25℃)

arameter name	symbol	Numerical value	unit
Operating voltage	Vcc	6.0	V
Storage temperature	Tstg	-65℃-150℃	℃
Input voltage		-0.3 to +（0.3+ Vcc）	V
Power consumption	PD	见附注1	W
Junction temperature		160℃	℃

Note 1: The maximum power consumption depends on three factors: TJMAX, TA, θJA, its calculation formula PDMAX= (TJmax-ta) /θJA, 8002D TJMA=150℃. TA is the temperature of the external environment, and θJA depends on different packaging forms. (SOP encapsulation form is 140℃/W)
 
LTLTK8002D Pin description

No.	Pin name	IO	Feature
1	SHUTDOWN	I	Off mode control input, high power normally off.
2	BYPASS	I	The voltage is VDD/2 and the external capacitor is connected.
3	IN+	I	IN+ is the forward input end. IN+ is usually connected to the Bypass Pin.
4	IN-	I	IN- is a negative input, used for audio input.
5	VO+	I	VO+ is the forward output of BTL.
6	VDD	-	Power input
7	GND	-	GND
8	VO-	O	VO- is the negative output of BTL.

 
LTK8002D Electrical parameters
Electrical parameter
VDD=5V, TA=25℃

signal	arameter name	Test condition	Minimum value	Typical value	Maximum value	unit
VDD	Supply voltage			5		V
IDD	Static supply current	VDD=5V，IO=0A	5.5	7.5	9.5	mA
ISHDN	Turn-off current	VDD=2V 到 5.5V		0.5		uA
Po	Output power	THD+N=10%, f=1kHz ,RL=4Ω；		2.9		W
		THD+N=10%, f=1kHz,RL=3Ω；		3.2
		THD+N=10%, f=1kHz,RL=8Ω；		1.8
		THD+N=1%, f=1kHz ,RL=4Ω；		2.3
		THD+N=1%, f=1kHz ,RL=3Ω；		2.5
		THD+N=1%, f=1kHz ,RL=8Ω；		1.3
THD+N	Total harmonic distortion plus noise	VDD=5V Po=0.6W, RL=8Ω		0.1		%
		VDD=5V Po=1.6W, RL=4Ω		0.15
OTP	Overtemperature protection			165		℃
PSRR	Power supply voltage rejection ratio	VDD=5V, VRIPPLE=200mVRMS, RL=8Ω, CB=2.2µF		70		dB