LM3401 Series

Hysteretic PFET controller for high power LED Drive

Catalog

Hysteretic PFET controller for high power LED Drive

Part	Current - Output / Channel [custom]	Utilized IC / Part	Supplied Contents	Voltage - Input [Min]	Voltage - Input [Max]	Outputs and Type	Outputs and Type	Features	Voltage - Output	Voltage - Input	Mounting Type	Package / Case	Package / Case [custom]	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply (Min) [Min]	Frequency	Dimming	Type	Number of Outputs	Voltage - Supply (Max) [Max]	Topology
Texas Instruments LM3401EVAL	1 A	LM3401	Board(s)	4.5 V	35 V	Non-Isolated	1	Dimmable
Texas Instruments LM3401-MR16DEMO/NOPB	1 A	LM3401	Board(s)			1 Non-Isolated Output		Dimmable	6.2 V	12 VAC
Texas Instruments LM3401MMX/NOPB	1 A										Surface Mount	8-MSOP 8-TSSOP	0.118 in	3 mm	-40 °C	125 ¯C	4.5 V	1.5 MHz	PWM	DC DC Controller	1	35 V	Step-Down (Buck)
Texas Instruments LM3401EVAL/NOPB	1 A	LM3401	Board(s)	4.5 V	35 V	Non-Isolated	1	Dimmable
Texas Instruments LM3401MM/NOPB	1 A										Surface Mount	8-MSOP 8-TSSOP	0.118 in	3 mm	-40 °C	125 ¯C	4.5 V	1.5 MHz	PWM	DC DC Controller	1	35 V	Step-Down (Buck)

Catalog

Hysteretic PFET controller for high power LED Drive

Key Features

• Hysteretic Control for Speed and SimplicityInput Operating Range of 4.5V-35V1.5MHz Maximum Switching FrequencyLow 200mV Reference VoltageProgrammable Current LimitHigh speed CMOS Compatible Enable/DimmingAdjustable HysteresisInput UVLONo output Capacitor Required8-pin VSSOP PackageAll trademarks are the property of their respective owners.Hysteretic Control for Speed and SimplicityInput Operating Range of 4.5V-35V1.5MHz Maximum Switching FrequencyLow 200mV Reference VoltageProgrammable Current LimitHigh speed CMOS Compatible Enable/DimmingAdjustable HysteresisInput UVLONo output Capacitor Required8-pin VSSOP PackageAll trademarks are the property of their respective owners.

Description

The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators. The LM3401 delivers constant current within ±6% accuracy to a wide variety and number of series connected LEDs. Output current is adjusted with an external current sensing resistor to drive high power LEDs in excess of 1A. For improved accuracy and efficiency, the LM3401 features dual-side hysteresis, very low reference voltage, and short propagation delay. A cycle by cycle current limit provides protection against over current and short circuit failures. Additional features include adjustable hysteresis and a CMOS compatible input pin for PWM dimming. The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators. The LM3401 delivers constant current within ±6% accuracy to a wide variety and number of series connected LEDs. Output current is adjusted with an external current sensing resistor to drive high power LEDs in excess of 1A. For improved accuracy and efficiency, the LM3401 features dual-side hysteresis, very low reference voltage, and short propagation delay. A cycle by cycle current limit provides protection against over current and short circuit failures. Additional features include adjustable hysteresis and a CMOS compatible input pin for PWM dimming.