© Semiconductor Components Industries, LLC, 2013

May, 2013 − Rev. 0

1

Publication Order Number:

NCL30161/D

NCL30161

Constant-Current Buck

Regulator for Driving High

Power LEDs

The NCL30161 is a hysteretic step−down, constant−current driver

for high power LEDs. Ideal for industrial and general lighting

applications utilizing minimal external components. The NCL30161

operates with an input voltage range from 6.3 V to 40 V. The hysteretic

control gives good power supply rejection and fast response during

load transients and PWM dimming to LED arrays of varying number

and type. A dedicated PWM input (DIM/EN) enables a wide range of

pulsed dimming, and a high switching frequency allows the use of

smaller external components minimizing space and cost. Protection

features include resistor−programmed constant LED current, shorted

LED protection, under−voltage and thermal shutdown. The

NCL30161 is available in a DFN10 3 mm x 3 mm package.

Features

TYPICAL Application

D1

NCL30161

VIN

VIN

VCC

CS

GATE

GND

ROT

LED

LED

L1

DIM/Enable

Figure 1. Typical Application Circuit

http://onsemi.com

Device

Package

ORDERING INFORMATION

NCL30161MNTXG

DFN10

(Pb−Free)

3000 / Tape &

Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

DFN10

CASE 485C

MARKING DIAGRAM

PIN CONNECTIONS

CS

NC

GND

VCC

GATE

VIN

ROT

DIM/EN

30161 = Specific Device Code

A

= Assembly Location

L

= Wafer Lot

Y

= Year

W

= Work Week

G

= Pb−Free Package

30161

ALYWG

G

(*Note: Microdot may be in either location)

NC

NC

1

2

3

4

5

10

9

8

7

6

(Top View)