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ON Semiconductor - Constant-Current Buck Regulator

Numéro de référence NCL30161
Description Constant-Current Buck Regulator
Fabricant ON Semiconductor 
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NCL30161 fiche technique
NCL30161
Constant-Current Buck
Regulator for Driving High
Power LEDs
The NCL30161 is a hysteretic stepdown, constantcurrent 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 resistorprogrammed constant LED current, shorted
LED protection, undervoltage and thermal shutdown. The
NCL30161 is available in a DFN10 3 mm x 3 mm package.
Features
VIN Range 6.3 V to 40 V
Short LED Shutdown Protection: (NCL30161 Latching)
No Control Loop Compensation Required
Adjustable LED Current
Single Pin Brightness and Enable/Disable Control Using PWM
Supports AllCeramic Output Capacitors and Capacitorless Outputs
Thermal Shutdown Protection
Capable of 100% Duty Cycle Operation
This is a PbFree Device
TYPICAL Application
LED Driver
Constant Current Source
General Illumination
Industrial Lighting
VIN D1
http://onsemi.com
DFN10
CASE 485C
MARKING DIAGRAM
30161
ALYWG
G
30161 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = PbFree Package
(*Note: Microdot may be in either location)
PIN CONNECTIONS
CS 1
NC 2
GND 3
NC 4
VCC 5
10 GATE
9 VIN
8 DIM/EN
7 NC
6 ROT
CIN L1
LED
LED
VIN GATE
DIM/Enable
ROT
CS
ROT
VCC
NCL30161
GND
CVCC
Figure 1. Typical Application Circuit
RSENSE
(Top View)
ORDERING INFORMATION
Device
Package
Shipping
NCL30161MNTXG
DFN10 3000 / Tape &
(PbFree)
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.
© Semiconductor Components Industries, LLC, 2013
May, 2013 Rev. 0
1
Publication Order Number:
NCL30161/D

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