LTK5150 Description:
    LTK5150 is a 5V-4 Ω -3.3W, differential input monaural Class F audio power amplifier. LTK5150 adopts high voltage withstand technology, with a voltage withstand of up to 7V. LTK5150 has chip low power consumption function and only needs to use one IO port to control the power amplifier to switch on and off freely. AB class mode can solve the interference problem of traditional D-class amplifiers on FM and completely eliminate EMI interference. In Class D amplifier mode, it can provide an efficiency of over 88%, and the new unfiltered structure can eliminate the output low-pass filter of traditional Class D amplifiers. LTK5150 is packaged in SOP-8.

LTK5150 Features:
Input voltage range 2.5V-7V
Unfiltered Class D amplifier, low static current, and low EMI
FM mode without interference
Excellent blasting sound suppression circuit
Ultra low noise floor, ultra-low distortion
Provide up to 1.65W output power under 10% THD+N, VDD=5V, 8 Ω load
Provide up to 3.3W output power under 10% THD+N, VDD=5V, 4 Ω load
Provide up to 1.2W output power under 10% THD+N, VDD=4.2V, 8 Ω load
Provide up to 2.3W output power under 10% THD+N, VDD=4.2V, 4 Ω load
Over temperature protection, short circuit protection

LTK5150 Application:
Bluetooth speaker, smart speaker
Navigation device, portable game console
Trolley speaker, DVD player, amplifier, MP3 player, MP4 player
Various audio products such as smart homes

LTK5150 Package:

Chip model	Packaging type	Package size
LTK5150	SOP-8

LTK5150 Typical application diagram:

LTK5150 Pin description and definition:

LTK5150 Test Method:

    Filter testing must be added when testing Class D mode. AUX-0025 is a filter. In order to test data accurately and meet practical applications, an inductor is connected in series at the RL load end to simulate parasitic inductance in the speaker.