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OB2201 - High Performance Quasi-Resonant PWM Controller

Download the OB2201 datasheet PDF. This datasheet also covers the OB2201-On variant, as both devices belong to the same high performance quasi-resonant pwm controller family and are provided as variant models within a single manufacturer datasheet.

General Description

OB2201 is a high performance flyback QuasiResonant (QR) controller optimized to achieve high efficiency in the universal input range and full loading range with effective system cost.

Key Features

  • protections against pin open and short conditions on selected pins. OB2201 is offered in SOP-8 and DIP-8 packages.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (OB2201-On-BrightElectronics.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number OB2201
Manufacturer On-Bright
File Size 332.28 KB
Description High Performance Quasi-Resonant PWM Controller
Datasheet download datasheet OB2201 Datasheet

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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
High Performance Quasi-Resonant PWM Controller OB2201 Product Specification GENERAL DESCRIPTION OB2201 is a high performance flyback QuasiResonant (QR) controller optimized to achieve high efficiency in the universal input range and full loading range with effective system cost. At full loading, the IC operates in fix frequency (52KHz) CCM mode in the low line input range and operates in QR mode in high line input range. In this way, high efficiency in the universal input range at full loading can be achieved. At normal load condition, it operates in QR mode. To minimize switching loss, the maximum switching frequency in QR mode is internally limited to 90 KHz. When the loading goes low, it operates in PFM mode for high power conversion efficiency.