LM3406HV-Q1 Series

1.5-A automotive constant current buck regulator for driving high power LEDs

Catalog

1.5-A automotive constant current buck regulator for driving high power LEDs

Part	Voltage - Supply (Max) [Max]	Topology	Qualification	Type	Frequency [Max]	Frequency [Min]	Applications	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Mounting Type	Grade	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Supply (Min) [Min]	Supplier Device Package	Dimming	Current - Output / Channel	Outputs and Type	Utilized IC / Part	Features	Voltage - Input [Min]	Voltage - Input [Max]	Supplied Contents	Contents
Texas Instruments LM3406HVQMHQ1	75 V	Step-Down (Buck)	AEC-Q100	DC DC Regulator	1 MHz	10 kHz	Lighting	150 °C	-40 °C	1	Surface Mount	Automotive	14-PowerTSSOP	4.4 mm	0.173 in	6 V	14-HTSSOP	PWM	1.5 A
Texas Instruments LM3406HVEVAL/NOPB																			1 A 1.5 A 350 mA 700 mA	1 Non-Isolated Output	LM3406HV	Dimmable	6 V	75 V	Board(s)	Board(s)
Texas Instruments LM3406HVMH/NOPB	75 V	Step-Down (Buck)		DC DC Regulator	1 MHz	10 kHz	Lighting	125 ¯C	-40 °C	1	Surface Mount	Automotive	14-PowerTSSOP	4.4 mm	0.173 in	6 V	14-HTSSOP	PWM	1.5 A
Texas Instruments LM3406MH/NOPB	42 V	Step-Down (Buck)		DC DC Regulator	1 MHz	10 kHz	Lighting	125 ¯C	-40 °C	1	Surface Mount	Automotive	14-PowerTSSOP	4.4 mm	0.173 in	6 V	14-HTSSOP	PWM	1.5 A
Texas Instruments LM3406MHEVAL/NOPB																			1 A 1.5 A 350 mA 700 mA	1 Non-Isolated Output	LM3406	Dimmable	6 V	42 V	Board(s)

Catalog

1.5-A automotive constant current buck regulator for driving high power LEDs

Key Features

• LM3406HV-Q1Automotive Grade DeviceAEC-Q100 Grade 1 QualifiedOperating Ambient Temperature: –40°C to 125°CIntegrated 2.0A MOSFETVINRange 6V to 42V (LM3406)VINRange 6V to 75V (LM3406HV)VINRange 6V to 75V (LM3406HV-Q1)True Average Output Current Control1.7A Minimum Output Current Limit Over TemperatureCycle-by-Cycle Current LimitPWM Dimming with Dedicated Logic InputPWM Dimming with Power Input VoltageSimple Control Loop CompensationLow Power ShutdownSupports All-Ceramic Output Capacitors and Capacitor-less OutputsThermal Shutdown ProtectionTSSOP-14 PackageLM3406HV-Q1Automotive Grade DeviceAEC-Q100 Grade 1 QualifiedOperating Ambient Temperature: –40°C to 125°CIntegrated 2.0A MOSFETVINRange 6V to 42V (LM3406)VINRange 6V to 75V (LM3406HV)VINRange 6V to 75V (LM3406HV-Q1)True Average Output Current Control1.7A Minimum Output Current Limit Over TemperatureCycle-by-Cycle Current LimitPWM Dimming with Dedicated Logic InputPWM Dimming with Power Input VoltageSimple Control Loop CompensationLow Power ShutdownSupports All-Ceramic Output Capacitors and Capacitor-less OutputsThermal Shutdown ProtectionTSSOP-14 Package

Description

The LM3406 family are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 2.0A (typical) for step-down (Buck) regulators. Controlled on-time with true average current and an external current sense resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series-parallel connected LED arrays of varying number and type. LED dimming via pulse width modulation (PWM) is achieved using a dedicated logic pin or by PWM of the power input voltage. The product feature set is rounded out with low-power shutdown and thermal shutdown protection. The LM3406 family are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 2.0A (typical) for step-down (Buck) regulators. Controlled on-time with true average current and an external current sense resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series-parallel connected LED arrays of varying number and type. LED dimming via pulse width modulation (PWM) is achieved using a dedicated logic pin or by PWM of the power input voltage. The product feature set is rounded out with low-power shutdown and thermal shutdown protection.