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LTK8002D PDF Datasheet – Class-AB Audio Amplifier

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This post explains for the Audio Amplifier. A Class-AB audio amplifier is a type of electronic amplifier that’s commonly used to amplify audio signals for driving speakers. It’s a compromise between the high efficiency of Class D amplifiers and the low distortion of Class A amplifiers. Class-AB amplifiers are widely employed in various audio applications due to their good balance between power efficiency and sound quality.

The Part Number is LTK8002D.

The function of this IC is Class-AB Audio Amplifier.

The package : SOP 8 Pin Type

Manufacturer: LTKCHIP TECHNOLOGY

Images:

LTK8002D datasheet circuit diagram

Description

This device is a 3W, mono AB audio power amplifier chip. The working voltage is 2V-5V, and the BTL bridge connection mode can provide 4Ω load with a THD less than 10% and an average output power of 3.0W under a 5V power supply voltage. In shutdown mode, the current typical value is less than 0.5uA.

LTK8002D is specially designed to provide high-power, high-fidelity audio output. It only requires a small number of peripheral components and can work under low voltage conditions (2V-5V). LTK8002D does not require coupling capacitors, bootstrap capacitors or buffer networks, so it is very suitable for low-volume, low-power systems.

Class-AB audio amplifiers are commonly used in home audio systems, car audio systems, professional audio equipment, and more. They’re suitable for applications where a good balance between power efficiency and sound quality is desired.

Pinout:

LTK8002D datasheet amplifier

Features:

1. Built-in switch popping suppression circuit

2. 10% THD+N, VDD=5V, under 4Ω load, provide Up to 2.9W output power

3. 10% THD+N, VDD=5V, 8Ω load, provide Up to 1.8W output power

4. Shut-off current <0.5uA

5.  Package mode: SOP-8

6. Overheat protection

Applications:

1. Plug-in speaker

2. Bluetooth speaker

3. Lithium battery amplifier

4. FM player

LTK8002D PDF Datasheet

OB6561P PDF – High Performance PFC Controller

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A PFC (Power Factor Correction) controller is a type of integrated circuit (IC) or chip that is used in power supply units (PSUs) to regulate and control the power factor of the input current. Power factor is a measure of how effectively electrical power is being utilized.

In power systems, a low power factor can lead to inefficient energy usage, increased power losses, and additional stress on the electrical grid. Power factor correction aims to improve the power factor by reducing the reactive power component of the current, thus bringing it closer to the ideal power factor of 1.

Part Number: OB6561P ( OB6561, OB6563 )

Function:  High Performance PFC Controller

Package: DIP, SOP 8 Pin type

Manufacturer: GreenEngine

Images:

OB6561P pdf controller

 

Description

OB6561P is a high performance transition mode(TM) Power Factor Correction(PFC) control IC. Designed with On-Bright patented proprietary technology, OB6561P / OB6563 optimizes tradition transition mode control easily achieving system power factor to close to 1 with very low THD.

Its low startup current, accurate current limiting, over-voltage protection, and open-loop security make it highly suitable for modern AC-DC power supply applications including ballasts, SMPS units, LCD TV power modules, and lighting power systems.

Features

1. Transition mode operation with built-in analog multiplier

2. THD optimization

3. System open loop protection

4. Proprietary audio noise elimination

5. Dynamic and static output over voltage protection(OVP)

6. Cycle-by-Cycle current limiting

7. Burst mode control for improved efficiency at light load

8. External ENA/disable control

9. Under voltage lockout with hysteresis (UVLO)

10. Built in current sense filter, no external RC filter is needed

Applications

1. Electronic Ballasts

2. AC-DC SMPS (Switch-Mode Power Supplies)

3. LCD TV Power Supply Units

4. Lighting and adapter power modules

[ … ]

OB6561P PDF Datasheet