NCL30083(2013_02) Просмотр технического описания (PDF) - ON Semiconductor

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NCL30083
(Rev.:2013_02)

Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with Thermal Fold-back

ON Semiconductor 

NCL30083

Product Preview

Dimmable Quasi-Resonant

Primary Side Current-Mode

Controller for LED Lighting

with Thermal Fold-back

http://onsemi.com

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.

Micro8

DM SUFFIX

CASE 846A

The device is highly integrated with a minimum number of external

components. A robust suite of safety protection is built in to simplify

MARKING DIAGRAM

the design. This device is specifically intended for very compact space

efficient designs. It supports step dimming by monitoring the AC line

and detecting when the line has been toggled on−off−on by the user to

reduce the light intensity in 5 steps down to 5% dimming.

8

AAx

AYWG

G

Features

1

• 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

AAx = Specific Device Code

x

= E or F

A

= Assembly Location

Y

= Year

W

= Work Week

G

= Pb−Free Package

(Note: Microdot may be in either location)

• 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 mA typ.)

• 5 State Quasi−log Dimmable

• Thermal Fold−back

• Programmable soft−start

PIN CONNECTIONS

1

SD

ZCD

CS

GND

SS

VIN

VCC

DRV

(Top View)

• Wide Temperature Range of −40 to +125°C

• Pb−free, Halide−free MSL1 Product

• Robust Protection Features

♦ Over Voltage / LED Open Circuit Protection

♦ Over Temperature Protection

Typical Applications

• Integral LED Bulbs

♦ Secondary Diode Short Protection

♦ Output Short Circuit Protection

♦ Shorted Current Sense Pin Fault Detection

• LED Power Driver Supplies

• LED Light Engines

♦ Latched and Auto−recoverable Versions

♦ Brown−out

♦ VCC Under Voltage Lockout

♦ Thermal Shutdown

This document contains information on a product under development. ON Semiconductor

reserves the right to change or discontinue this product without notice.

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 34 of this data sheet.

© Semiconductor Components Industries, LLC, 2013

1

February, 2013 − Rev. P2

Publication Order Number:

NCL30083/D

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