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CAT4101_12 Datasheet, PDF (1/9 Pages) ON Semiconductor – 1 A Constant-Current LED Driver | |||
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CAT4101
1 A Constant-Current LED
Driver with PWM Dimming
Description
The CAT4101 is a constantâcurrent sink driving a string of
highâbrightness LEDs up to 1 A with very low dropout of 0.5 V at full
load. It requires no inductor, provides a low noise operation and
minimizes the number of components. The LED current is set by an
external resistor connected to the RSET pin. The LED pin is
compatible with high voltage up to 25 V, allowing the driving of long
strings of LEDs. The device ensures an accurate and regulated current
in the LEDs independent of supply and LED forward voltage
variation.
The PWM/EN input allows the device shutdown and the LED
brightness adjustment by using an external pulse width modulation
(PWM) signal.
The driver features a thermal shutdown protection that becomes
active whenever the die temperature exceeds 150°C.
The device is available in a highâpower, 5âlead TOâ263 package
offering excellent thermal dissipation characteristics.
Features
⢠Accurate 1 A Current Sink
⢠Up to 25 V Operation on LED Pin
⢠Low Dropout 500 mV at 1 A
⢠LED Current Set by External Resistor
⢠High Resolution PWM Dimming via EN/PWM
⢠âZeroâ Current Shutdown Mode
⢠Thermal Shutdown Protection
⢠TOâ263 (D2PAK) 5âlead Package
⢠This Device is PbâFree, Halogen Free/BFR Free and is RoHS
Compliant
Applications
⢠High Power LED up to 1 A
⢠Architectural and General Lighting
⢠Automotive Lighting
VCC
3 V to 25 V
LEDs
1A
VIN
5V
VIN
CAT4101
OFF ON
EN/PWM LED
549 W
RSET
GND
http://onsemi.com
D2PAK 5
(TOâ263, 5 LEAD)
TV SUFFIX
CASE 418AH
PIN CONNECTIONS
1
EN/PWM
VIN
GND
TAB
RSET
LED
(Top View)
MARKING DIAGRAM
CAT4101TV
XXXXXXXXX
1
CAT4101TV = Specific Device Code
XXXXXXXXX = Internal Traceability
ORDERING INFORMATION
Device
Package
Shippingâ
CAT4101TVâT75
TOâ263
750 /
(D2PAK, 5 Lead) Tape & Reel
(PbâFree)
â For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
Figure 1. Typical Application Circuit
© Semiconductor Components Industries, LLC, 2012
1
July, 2012 â Rev. 8
Publication Order Number:
CAT4101/D
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