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CAT4101

ON Semiconductor
Part Number CAT4101
Manufacturer ON Semiconductor
Description 1A Constant-Current LED Driver
Published Jun 27, 2009
Detailed Description CAT4101 1 A Constant-Current LED Driver with PWM Dimming Description The CAT4101 is a constant−current sink driving a ...
Datasheet PDF File CAT4101 PDF File

CAT4101
CAT4101

Overview
CAT4101 1 A Constant-Current LED Driver with PWM Dimming Description The CAT4101 is a constant−current sink driving a string of high−brightness 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 high−power, 5−lead TO−263 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 • “Zero” Current Shutdown Mode • Thermal Shutdown Protection • TO−263 (D2PAK) 5−lead Package • This Device is Pb−Free, 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 VIN 5V OFF ON VIN CAT4101 EN/PWM LED 1A 549 W RSET GND Figure 1.
Typical Application Circuit © Semiconductor Components Industries, LLC, 2012 July, 2012 − Rev.
8 1 http://onsemi.
com D2PAK 5 (TO−263, 5 LEAD) TV SUFFIX CASE 418AH EN/PWM VIN GND RSET LED PIN CONNECTIONS 1 (Top View) MARKING DIAGRAM TAB CAT4101TV XXXXXXXXX 1 CAT4101TV = Specific Device Code XXXXXXXXX = Internal Traceability ORDERING INFORMATION Device Package Shipping† CAT4101TV−T75 TO−263 750 / (D2PAK, 5 Lead) Tape & Reel (Pb−Free) †For information on tape and reel spe...


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