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FL6961MY

Single-Stage Flyback and Boundary Mode PFC Controller for Lighting

ON Semiconductor 

January 2012

FL6961

Single-Stage Flyback and Boundary Mode PFC

Controller for Lighting

Features

 Boundary Mode PFC Controller

 Low Input Current THD

 Controlled On-Time PWM

 Zero-Current Detection

 Cycle-by-Cycle Current Limiting

 Leading-Edge Blanking Instead of RC Filtering

 Low Startup Current: 10µA Typical

 Low Operating Current: 4.5mA Typical

 Feedback Open-Loop Protection

 Programmable Maximum On-Time (MOT)

 Output Over-Voltage Clamping Protection

 Clamped Gate Output Voltage: 16.5V

Applications

 General LED Lighting

 Industrial, Commercial and Residential Fixtures

 Outdoor Lighting: Street, Roadway, Parking,

Construction, and Ornamental LED Lighting

Description

The FL6961 is a general lighting power controller for

low- to high-power lumens applications requiring power

factor correction. It is designed for flyback or boost

converter operating in Boundary Mode.

The FL6961 provides a controlled on-time to regulate

the output DC voltage and achieves natural power factor

correction (PFC). The maximum on-time of the external

switch is programmable to ensure safe operation during

AC brownouts. An innovative multi-vector error amplifier

provides rapid transient response and precise output

voltage clamping. A built-in circuit disables the controller

if the output feedback loop is opened. The startup

current is lower than 20µA and the operating current is

less than 6mA. The supply voltage can be up to 25V,

maximizing application flexibility.

Ordering Information

Part Number

FL6961MY

Operating Temperature

Range

-40°C to +125°C

Package

8-Pin, Small Outline Package (SOP)

Packing Method

Tape & Reel

© 2010 Fairchild Semiconductor Corporation

FL6961 • Rev. 1.0.2

www.fairchildsemi.com

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