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LTK5303
LTK5303 is a built-in asynchronous BOOST boost audio amplifier that can provide up to 11W output power under a 2Ω load.
LTK5303 can adjust the boost voltage level externally, suitable for various application conditions. At the same time, the EN pin has a one line pulse control function, which can control a single pin to enter D-class normal mode, D-class anti sound mode, AB class mode, and shutdown mode of the chip, achieving the goal of saving IO ports and further saving costs for customers.
LTK5303 can adjust the boost voltage level externally, suitable for various application conditions. At the same time, the EN pin has a one line pulse control function, which can control a single pin to enter D-class normal mode, D-class anti sound mode, AB class mode, and shutdown mode of the chip, achieving the goal of saving IO ports and further saving costs for customers.
LTK5303 Description:
LTK5303 is a built-in asynchronous BOOST boost audio amplifier that can provide up to 11W output power under a 2Ω load.
LTK5303 can adjust the boost voltage level externally, suitable for various application conditions. At the same time, the EN pin has a one line pulse control function, which can control a single pin to enter D-class normal mode, D-class anti sound mode, AB class mode, and shutdown mode of the chip, achieving the goal of saving IO ports and further saving costs for customers.
When the output amplitude is small, the adaptive boost circuit does not work, and the power amplifier is directly powered by the power supply. When the output is large, the boost circuit is automatically started internally, and the power amplifier supply voltage is the boost voltage to achieve greater output power. LTK5303 can completely eliminate EMI interference in Class AB mode.
LTK5303 Features:
Select 6.5V or 7.1V for boost voltage in two levels
One line pulse control for saving IO ports
FM mode without interference
Adaptive Boost
Ultra low noise floor, ultra-low distortion
Provide up to 11W output power under 10% THD+N, VBAT=4.2V, 2 Ω+15UH load
Provide up to 8.2W output power under 10% THD+N, VBAT=4.2V, 3 Ω+15UH load
Provide up to 6.7W output power under 10% THD+N, VBAT=4.2V, 4 Ω+15UH load
Over temperature protection, short circuit protection
Encapsulation form ESOP-10
Turn off current<1ua
LTK5303 Applications:
Radio, amplifier
Navigation devices, portable game consoles, toys
Pull rod speaker
Various audio products such as smart homes
LTK5303 Package:
LTK5303 Pin description and definition:
LTK5303 Test method:
Filter testing must be added when testing Class D mode. AUX-0025 is a filter. In order to test the data accurately and meet practical applications, an inductor is connected in series at the RL load end to simulate the parasitic inductance in the speaker.
LTK5303 Chip Package ESOP-10:
LTK5303 is a built-in asynchronous BOOST boost audio amplifier that can provide up to 11W output power under a 2Ω load.
LTK5303 can adjust the boost voltage level externally, suitable for various application conditions. At the same time, the EN pin has a one line pulse control function, which can control a single pin to enter D-class normal mode, D-class anti sound mode, AB class mode, and shutdown mode of the chip, achieving the goal of saving IO ports and further saving costs for customers.
When the output amplitude is small, the adaptive boost circuit does not work, and the power amplifier is directly powered by the power supply. When the output is large, the boost circuit is automatically started internally, and the power amplifier supply voltage is the boost voltage to achieve greater output power. LTK5303 can completely eliminate EMI interference in Class AB mode.
In the D-class amplifier mode, it can provide higher than extremely high efficiency. The new unfiltered structure can eliminate the output low-pass filter of traditional D-class amplifiers. The unique DRC (Dynamic Range Control) technology of LTK5303 reduces the distortion caused by waveform clipping during high-power output. Compared with similar products, the dynamic response is more outstanding.
LTK5303 is packaged in ESOP-10.
LTK5303 Features:
Select 6.5V or 7.1V for boost voltage in two levels
One line pulse control for saving IO ports
FM mode without interference
Adaptive Boost
Ultra low noise floor, ultra-low distortion
Provide up to 11W output power under 10% THD+N, VBAT=4.2V, 2 Ω+15UH load
Provide up to 8.2W output power under 10% THD+N, VBAT=4.2V, 3 Ω+15UH load
Provide up to 6.7W output power under 10% THD+N, VBAT=4.2V, 4 Ω+15UH load
Over temperature protection, short circuit protection
Encapsulation form ESOP-10
Turn off current<1ua
LTK5303 Applications:
Radio, amplifier
Navigation devices, portable game consoles, toys
Pull rod speaker
Various audio products such as smart homes
LTK5303 Package:
| Chip model | Packaging type | Package size |
| LTK5303 | ESOP-10 |
LTK5303 Typical application diagram:
LTK5303 Pin description and definition:
LTK5303 Test method:
Filter testing must be added when testing Class D mode. AUX-0025 is a filter. In order to test the data accurately and meet practical applications, an inductor is connected in series at the RL load end to simulate the parasitic inductance in the speaker.
LTK5303 Chip Package ESOP-10:
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