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OB339F - High Precision Off-line Primary-Side PWM Power Switch

Download the OB339F datasheet PDF. This datasheet also covers the OB339F-On variant, as both devices belong to the same high precision off-line primary-side pwm power switch family and are provided as variant models within a single manufacturer datasheet.

General Description

OB339F is a primary side regulation off-line LED lighting controller which can achieve accurate LED current.

It significantly simplifies LED lighting system design by eliminating the secondary side feedback circuitry.

Key Features

  • including Cycle-by-Cycle current limiting, VDD OVP, VDD clamp and UVLO. Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique. OB339F is offered in DIP8 package.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (OB339F-On-Bright.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number OB339F
Manufacturer On-Bright
File Size 777.05 KB
Description High Precision Off-line Primary-Side PWM Power Switch
Datasheet download datasheet OB339F Datasheet

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Part Number Description
OB3394 High Precision PWM power switch
OB3396 High Precision Off-line Primary-Side PWM Power Switch
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
OB339F High Precision Off-line Primary-Side PWM Power Switch GENERAL DESCRIPTION OB339F is a primary side regulation off-line LED lighting controller which can achieve accurate LED current. It significantly simplifies LED lighting system design by eliminating the secondary side feedback circuitry. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below. The LED current (CC control) can be adjusted externally by the resistor Rs at SOURCE pin. OB339F offers comprehensive protection coverage with auto-recovery features including Cycle-by-Cycle current limiting, VDD OVP, VDD clamp and UVLO. Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique. OB339F is offered in DIP8 package.