LM3421

ACTIVO

Controladores de canal N para controladores LED de corriente constante con controlador FET DIM en se

Haga su pedido ahora

Hoja de datos

document-pdfAcrobat LM342x N -Channel Controllers for Constant-Current LED Drivers datasheet (Rev. G) (Inglés) PDF | HTML

Se encuentra disponible una versión más nueva de este producto

open-in-new

Comparar alternativas

Funcionalidad similar a la del dispositivo comparado

TPS92691-Q1

ACTIVO

Controlador LED de multitopologías con amplificador de detección de corriente rail-to-rail para auto Multi-topology capabilities with integrated N-channel FET.

LM3421

ACTIVO

Hoja de datos

Haga su pedido ahora

Detalles del producto

Input voltage type

DC/DC

Topology

Boost, Boost Controller, Buck-Boost, SEPIC

Vin (min) (V)

4.5

Vin (max) (V)

75

Vout (max) (V)

72

Vout (min) (V)

3

Iout (max) (A)

5

Iq (typ) (mA)

2

Features

Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown

Operating temperature range (°C)

-40 to 125

Dimming method

Analog, PWM

Number of channels

1

Rating

Catalog

Input voltage type

DC/DC

Topology

Boost, Boost Controller, Buck-Boost, SEPIC

Vin (min) (V)

4.5

Vin (max) (V)

75

Vout (max) (V)

72

Vout (min) (V)

3

Iout (max) (A)

5

Iq (typ) (mA)

2

Features

Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown

Operating temperature range (°C)

-40 to 125

Dimming method

Analog, PWM

Number of channels

1

Rating

Catalog

HTSSOP (PWP)

16

32 mm² (5 mm × 6.4 mm)

V_IN Range From 4.5 V to 75 V
High-Side Adjustable Current Sense
2-Ω, 1-A Peak MOSFET Gate Driver
Input Undervoltage and Output Overvoltage Protection
PWM and Analog Dimming
Cycle-by-Cycle Current Limit
Programmable Switching Frequency
Zero Current Shutdown and Thermal Shutdown
LED Output Status Flag (LM3423 and LM3423-Q0 Only)
Fault Status Flag and Timer(LM3423 and LM3423-Q0 Only)

V_IN Range From 4.5 V to 75 V
High-Side Adjustable Current Sense
2-Ω, 1-A Peak MOSFET Gate Driver
Input Undervoltage and Output Overvoltage Protection
PWM and Analog Dimming
Cycle-by-Cycle Current Limit
Programmable Switching Frequency
Zero Current Shutdown and Thermal Shutdown
LED Output Status Flag (LM3423 and LM3423-Q0 Only)
Fault Status Flag and Timer(LM3423 and LM3423-Q0 Only)

The LM3421 and LM3423 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421 and LM3423 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421 and LM3423 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

The LM3421 and LM3423 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421 and LM3423 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421 and LM3423 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

filter

Buscar otro/a Controladores LED de iluminación

Descargar Ver vídeo con transcripción Video

Productos similares que pueden interesarle

open-in-new

Comparar alternativas

Misma funcionalidad con diferente configuración de pines que el dispositivo comparado

TPS92691

ACTIVO

Controlador LED de multitopologías con amplificador de detección de corriente rail-to-rail TPS92691 This product is a multi-topology low-side NFET LED controller with rail-to-rail current sense capability.

Documentación técnica

No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.

Ver todo 5

Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	LM342x N -Channel Controllers for Constant-Current LED Drivers datasheet (Rev. G)	PDF \| HTML	30/07/2019
	Guía de selección	Power Management Guide 2018 (Rev. R)		25/06/2018
	Artículo técnico	Driving LEDs: topology matters	PDF \| HTML	26/02/2016
	Nota sobre la aplicación	AN-1656 Design Challenges of Switching LED Drivers (Rev. A)		3/05/2013
	Nota sobre la aplicación	AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A)		23/04/2013

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Modelo de simulación