NCL30083:Step Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with thermal foldback

The NCL30083 is a PWM current mode controller targeting isolated flyback and non-isolated constant current topologies. The controller operates in a quasi-resonant mode to provide high efficiency. Thanks to a novel control method, the device is able to precisely regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. The device supports 5 step log dimming down to 5%. To enhance system lifetime, it has current foldback at a user programmable temperature point. While the NCL30083 has integrated fixed overvoltage protection, the designer has the option to program a lower overvoltage protection level.

技术特性

Quasi−resonant Peak Current−mode Control Operation
Primary Side Sensing (no optocoupler needed)
Wide VCC Range
Source 300 mA/Sink 500 mA Totem Pole Driver with 12 V Gate Clamp
Precise LED Constant Current Regulation ±1% Typical
Line Feed−forward for Enhanced Regulation Accuracy
Low LED Current Ripple
250 mV ±2% Guaranteed Voltage Reference for Current Regulation
~ 0.9 Power Factor with Valley Fill Input Stage
Low Start−up Current (13 A typ.)
5 State Quasi−log Dimmable
Thermal Fold−back
Programmable soft−start
Wide Temperature Range of −40 to +125°C
Pb−free, Halide−free MSL1 Product

终端产品

Integral LED Bulbs and downlights
LED Light Engines
Electronic Control Gear for LEDs

应用

Line Powered LED Drivers
Integral Driver Electronics

优势

No opto-coupler or secondary control circuitry
Allows support for wide number of LEDs in string and simplifies transformer design
No need for binned forward voltage LEDs or production trimming
Meets Energystar® LED Bulb and Residential Luminaire Standards
Protects system from overheating by gracefully reducing current
Robust handling of faults
Avoids overheating in fault mode
Allows dimming with standard wall switch
Reliable operation across all conditions
Flexiblity in design
Supports outdoor and high temperature operating environments
Enhanced regulation accuracy
Improves startup behavior

封装图 PACKAGE DIMENSIONS

订购信息 Ordering Information

产品

状况

Compliance

具体说明

封装

MSL*

容器

预算价格 (1千个数量的单价）

类型

外形

类型

数量

NCL30083ADMR2G

Active

Pb-free

Halide free

Step Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with thermal foldback, and latching on faults

Micro8™-8

846A-02

Tape and Reel

4000

$0.48

NCL30083BDMR2G