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BP2822 PDF Datasheet – LED Constant Current Controller

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This post explains for the LED Controller.

The Part Number is BP2822.

The function of this semiconductor is Non-isolated Buck LED constant current controller.

The package is DIP 8 Pin Type

Manufacturer: BPS ( https://bpsemi.com// )

Preview images:BP2822 pdf datasheet

Description

The BP2822 is a high-precision LED constant current control chip, used in non-isolated step-down LED power supply systems, suitable for full-range AC voltage input or 12V~600V DC voltage input.

The BP-2822 integrates a 600V power MOSFET inside, requiring only a few external components to achieve excellent constant current characteristics.

 

Features

1. Built-in 600V power MOSFET

2. Source drive, no need for auxiliary winding power supply

3. Up to ±3% LED current accuracy

4. Up to 93% system efficiency

5. LED short circuit protection

6. CS sampling resistor short circuit protection

7. Chip over temperature protection

 

Applications:

1. Bubble lights

2. Honeycomb lights

3. Rice lights

4. Scenery lights

 

BP2822 Datasheet PDF

BIT3260 PDF Datasheet – Low Cost LED Driver

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This post explains for the PWM Controller.

The Part Number is BIT3260.

The function of this semiconductor is Low Cost LED Driver.

The package is SOP-8 Pin Ttpe

Manufacturer: BiTEK ( Beyond Innovation Technology )

Preview images :

BIT3260 pinout datasheet

Description

BIT3260 is a high frequency PWM controller integrating required functions for boost conversion in a small SOP-8 package. A low 0.2V feedback voltage and over voltage protection make BIT3260 an ideal controller for LED backlight supplies. CMOS process greatly reduces the operating current compared with similar products.

Features

1. Voltage Mode PWM Controller

2. 10V ~ 18V operation voltage

3. Current limit

4. Frequency adjustable

5. Internal Soft-Start

6. Maximum duty cycle output

7. Over temperature protection, OTP

8. Internal Under Voltage Lock Out, UVLO

9. Totem Pole Output

BIT3260 pdf

The PWM generator:

The pulse width modulation control circuit includes a reference voltage, an error amplifier, a ramp wave generator, and a comparator. A signal input to the INN pin is compared with reference voltage in the error amplifier, there will be an error signal output in the error amplifier. This error signal can be modulated into PWM signal in the comparator output when it compares to ramp wave signal in the comparator.

BIT3260 PDF Datasheet

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