OB2201 In Stock

OB2201 Quasi-Resonant (QR) Flyback PWM Controller

Name: OB2201 Quasi-Resonant (QR) Flyback PWM Controller
Brand: On-Bright
SKU: OB2201

The OB2201 is an On-Bright offline flyback Quasi-Resonant (QR) PWM controller — a controller-type IC that drives an external power MOSFET. It runs at ~52kHz CCM at low line, switches to QR valley-switching at high line, and enters PFM at light load to raise efficiency across the range and lower EMI. With cycle-by-cycle over-current (OCP), output over-voltage (OVP), VCC under-voltage lockout (UVLO), and pin open/short protection, in SOP-8 / DIP-8, it suits adapters, chargers, and set-top-box supplies.

Function

Flyback QR PWM controller

Type

Controller (external MOSFET)

Mode

~52 kHz CCM / QR / PFM

Protection

OCP, OVP, UVLO, pin fault

Features

Offline flyback Quasi-Resonant (QR) PWM controller
Controller-type, drives external power MOSFET
~52 kHz CCM low line / QR high line / PFM light load
Cycle-by-cycle over-current protection (OCP)
Output OVP and VCC under-voltage lockout (UVLO)
Pin open/short protection; SOP-8 / DIP-8

Specifications

Function	Flyback QR PWM controller
Type	Controller (external MOSFET)
Mode	~52 kHz CCM / QR / PFM
Protection	OCP, OVP, UVLO, pin fault
Topology	Offline AC/DC flyback
Package	SOP-8 / DIP-8

Applications

PWM ControllerQuasi-ResonantFlybackAC/DCOn-Bright

Order Info

Stock, pricing, lead time, and samples for OB2201 — we reply within one business day.

Request Quote Request datasheet / sample

On-Bright

China

Power Management & LED Lighting Driver ICs

View all On-Bright products → Official On-Bright site

OB2201 — Frequently Asked Questions

Where can I buy OB2201?

JLink Technology is an authorized On-Bright distributor serving Taiwan, Mainland China, and Hong Kong. Submit an RFQ for OB2201 and we will respond with pricing and lead time within one business day.

Is OB2201 in stock?

Stock and lead time for OB2201 vary by quantity. Send us your required quantity via the RFQ form and we will confirm current availability and delivery schedule.

Can I get the OB2201 datasheet and samples?

Yes. As an authorized On-Bright distributor, JLink Technology can provide the official OB2201 datasheet, samples, and engineering support. Contact us to request them.

What is the minimum order quantity for OB2201?

We support orders from prototype samples to mass production. Tell us your target volume in the RFQ and we will quote accordingly.

Is there a pin-compatible alternative or second source for OB2201?

Tell us the part you need to replace and your application. As a multi-line authorized distributor, JLink Technology can suggest a verified cross-reference or second source related to OB2201 where one exists, and quote pricing, stock, and lead time.

Related Products

OB5269 In Stock

OB5269 Green-Mode Current-Mode PWM Flyback Controller

The OB5269 is a green-mode current-mode PWM flyback controller from On-Bright, integrating an HV startup circuit and extended burst mode that reduces frequency at light load for higher efficiency and energy-standard compliance. With built-in OCP/OLP/UVLO/OTP/OVP protections in an SOP-8 package, it suits phone chargers, adapters, and low-power AC/DC supplies.

PWM ControllerFlybackAC/DC

Details Request Quote

OB3375 In Stock

OB3375 Quasi-Resonant Buck LED Driver Controller

The OB3375 is a high-efficiency buck LED driver controller from On-Bright using quasi-resonant, peak-current-mode control for white-LED and LCD-backlight strings. A built-in transconductance amplifier gives accurate constant-current (CC) regulation, with HPWM current setting and LPWM low-frequency dimming (1%~100%), plus full protection (LED open/short, CS open, MOS/diode/inductor short, OTP, UVLO). SOP8.

LED DriverBuckQuasi-Resonant

Details Request Quote

OB3392 In Stock

OB3392 Offline Single-Stage PSR Constant-Current LED Driver

The OB3392 is an offline (AC-DC) isolated single-stage primary-side-regulated (PSR) constant-current LED lighting driver controller from On-Bright, with primary-side current regulation that needs no opto-coupler or TL431. It uses constant on-time for high power factor and quasi-resonant operation for efficiency, with line/load compensation and LED open/short, cycle-by-cycle current limit, VDD UVLO/OVP, and over-temperature protection. For LED bulbs and tubes. SOT23-6.

LED DriverConstant CurrentPSR

Details Request Quote