NCL30161 Datasheet, PDF (1/8 Pages) ON Semiconductor – Constant-Current Buck Regulator for Driving High Power LEDs

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
• 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 All−Ceramic Output Capacitors and Capacitor−less Outputs
• Thermal Shutdown Protection
• Capable of 100% Duty Cycle Operation
• This is a Pb−Free 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
= Pb−Free 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
C_IN
L1
LED
LED
VIN
GATE
DIM/Enable
CS
ROT
R_OT
VCC
NCL30161
GND
C_VCC
R_SENSE
Figure 1. Typical Application Circuit
(Top View)
ORDERING INFORMATION
Device
Package Shipping^†
NCL30161MNTXG
DFN10 3000 / Tape &
(Pb−Free)
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
1
May, 2013 − Rev. 0
Publication Order Number:
NCL30161/D