CAT4101: LED Driver, 1 A Constant Current with PWM

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 150C. 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
  • TO263 (D2PAK) 5-lead Package
  • This Device is Pb-Free, Halogen Free/BFR Free and is RoHS Compliant
Applications
  • High Power LED up to 1A
End Products
  • Architectural and General Lighting
  • Automotive Lighting
Design & Development Tools (1)
Document TitleDocument ID/SizeRevisionRevision Date
CAT4101 Design Worksheet for Thermal FoldbackCAT4101 TFB DWS.XLS (109.0kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
TO-263, 5 Lead221AE (54.8kB)revo
Application Notes (1)
Document TitleDocument ID/SizeRevisionRevision Date
Thermal Foldback for CAT4101, LED LightingAND9053/D (750.0kB)0
Evaluation Board Documents (5)
Document TitleDocument ID/SizeRevisionRevision Date
CAT4101 LED Driver Evaluation Board User's ManualEVBUM2022/D (101.0kB)1
CAT4101AEVB Bill of MaterialsCAT4101AEVB_BOM_ROHS.PDF (137.0kB)0
CAT4101AEVB Gerber Layout Files (Zip Format)CAT4101AEVB_GERBER.ZIP (25.0kB)0
CAT4101AEVB SchematicCAT4101AEVB_SCHEMATIC.PDF (145.0kB)0
CAT4101AEVB Test ProcedureCAT4101AEVB_TEST_PROCEDURE.PDF (116.0kB)0
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
LED Driver, 1 A Constant Current with PWMCAT4101/D (147.0kB)8
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
CAT4101AEVBActiveLDO Current Sink Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT4101TV-T75ActivePb-free Halide freeTO-263-5221AE3Tape and Reel750$1.28
Specifications
ProductVI Max (V)IO Max (mA)LEDs in Series, Max #LEDs in Parallel, Max #
CAT4101TV-T755.5100081
LED Driver, 1 A Constant Current with PWM (147.0kB) CAT4101
CAT4101 Design Worksheet for Thermal Foldback CAT4101
Thermal Foldback for CAT4101, LED Lighting CAT4101
EVBUM2022/D - 101 CAT4101AEVB
CAT4101AEVB BOM ROHS CAT4101AEVB
CAT4101AEVB GERBER CAT4101AEVB
CAT4101AEVB SCHEMATIC CAT4101AEVB
CAT4101AEVB TEST PROCEDURE CAT4101AEVB
TO-263, 5 Lead CAT4101
CAT4101
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