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PDF NCL30161 Data sheet ( Hoja de datos )
| Número de pieza | NCL30161 | |
| Descripción | Constant-Current Buck Regulator | |
| Fabricantes | ON Semiconductor | |
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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
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 &
(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
May, 2013 − Rev. 0
1
Publication Order Number:
NCL30161/D
1 page  
VCC
ROT
NCL30161
VIN
5 V Regulator
(6.3 V to 40 Vmax)
DIM / Enable
VCC
Enable Pull−Up
Resistor
SQ
VCC
Gate Driver
RQ
Peak Current
Comparator
220 mV
Timer (toff)
&
Thermal
Shutdown
Valley Current
Comparator
Short Circuit Protection
Comparator
180 mV
500 mV
GND
Figure 2. Simplified Block Diagram
VIN
CIN
LED
D1
LED
L1
VIN GATE
DIM/Enable
ROT
CS
ROT
VCC NCL30161 GND
CVCC
RSENSE
Figure 3. Typical Application Circuit To Drive Multiple LEDs (Buck)
GATE
CS
http://onsemi.com
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NCL30161.PDF ] | |
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