LM3409-Q1

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Controlador reductor PFET automotriz de 42 V para unidades LED de alta potencia

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Hoja de datos

document-pdfAcrobat LM3409, -Q1, LM3409HV, -Q1 P-FET Buck Controller for High-Power LED Drivers datasheet (Rev. L) (Inglés) PDF | HTML

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TPS92515HV

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Controlador LED de 2 A y 65 V con capacidad de atenuación NFET integrada, detección de corriente de Higher input voltage range of 5.5 V to 65 V with integrated switch.

LM3409-Q1

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Detalles del producto

Number of channels

1

Topology

Buck Controller

Rating

Automotive

Operating temperature range (°C)

-40 to 125

Vin (min) (V)

6

Vin (max) (V)

42

Vout (min) (V)

1.24

Vout (max) (V)

42

Iout (max) (A)

5

Iq (typ) (mA)

2

Switching frequency (max) (kHz)

2000

Features

Adjustable Switch Frequency, Enable/Shutdown, Precision Dimming Control, Thermal shutdown

Number of channels

1

Topology

Buck Controller

Rating

Automotive

Operating temperature range (°C)

-40 to 125

Vin (min) (V)

6

Vin (max) (V)

42

Vout (min) (V)

1.24

Vout (max) (V)

42

Iout (max) (A)

5

Iq (typ) (mA)

2

Switching frequency (max) (kHz)

2000

Features

Adjustable Switch Frequency, Enable/Shutdown, Precision Dimming Control, Thermal shutdown

HVSSOP (DGQ)

10

14.7 mm² (3 mm × 4.9 mm)

LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q100 Grade 1 Qualified
2-Ω, 1-A Peak MOSFET Gate Drive
V_IN Range: 6 V to 42 V (LM3409, LM3409-Q1)
V_IN Range: 6 V to 75 V (LM3409HV, LM3409HV-Q1)
Differential, High-Side Current Sense
Cycle-by-Cycle Current Limit
No Control Loop Compensation Required
10,000:1 PWM Dimming Range
250:1 Analog Dimming Range
Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
Low-Power Shutdown and Thermal Shutdown
Thermally Enhanced 10-Pin, HVSSOP Package

LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q100 Grade 1 Qualified
2-Ω, 1-A Peak MOSFET Gate Drive
V_IN Range: 6 V to 42 V (LM3409, LM3409-Q1)
V_IN Range: 6 V to 75 V (LM3409HV, LM3409HV-Q1)
Differential, High-Side Current Sense
Cycle-by-Cycle Current Limit
No Control Loop Compensation Required
10,000:1 PWM Dimming Range
250:1 Analog Dimming Range
Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
Low-Power Shutdown and Thermal Shutdown
Thermally Enhanced 10-Pin, HVSSOP Package

The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllers for step-down (buck) current regulators. They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function and a thermally enhanced 10-pin, HVSSOP package. These features combine to make the LM3409 family of devices ideal for use as constant current sources for driving LEDs where forward currents up to 5 A are easily achievable.

The LM3409 devices use constant off-time (COFT) control to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllers for step-down (buck) current regulators. They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function and a thermally enhanced 10-pin, HVSSOP package. These features combine to make the LM3409 family of devices ideal for use as constant current sources for driving LEDs where forward currents up to 5 A are easily achievable.

The LM3409 devices use constant off-time (COFT) control to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.

For all available packages, see the orderable addendum at the end of the data sheet.

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TPS92515-Q1

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Controlador LED atenuable PWM de derivación de 2 A y 42 V con NFET integrado y calibración de corrie This product is an integrated NFET controlled off-time buck LED driver with power-up output current calibration. It supports input voltage up to 42 V.

Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	LM3409, -Q1, LM3409HV, -Q1 P-FET Buck Controller for High-Power LED Drivers datasheet (Rev. L)	PDF \| HTML	23/05/2016
	Informe	LED Drivers for Automotive Exterior Applications (Rev. B)		27/03/2018
	Nota sobre la aplicación	AN-1656 Design Challenges of Switching LED Drivers (Rev. A)		3/05/2013
	Guía del usuario	AN-1954 LM3409 Demonstration Board (Rev. D)		1/05/2013
	Nota sobre la aplicación	AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A)		23/04/2013
	Nota sobre la aplicación	Dimming Techniques for Switched-Mode LED Drivers		30/07/2009

Diseño y desarrollo

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Placa de evaluación

LM3409EVAL — Placa de demostración LM3409

This demonstration board showcases the LM3409 PFET controller for a buck current regulator. It is designed to drive 4 LEDs (V_O = 15V) at a maximum average LED current (I_LED = 1A) from a DC input voltage (V_IN = 24V). The switching frequency (f_SW = 525 kHz) is targeted for the nominal operating (...)

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