LM25085

ACTIVO

Controlador reductor PFET no síncrono de tiempo de conexión constante y entrada de tensión amplia de

Haga su pedido ahora

Hoja de datos

document-pdfAcrobat LM25085 / -Q1 42V Constant On-Time PFET Buck Switching Controller datasheet (Rev. J) (Inglés) PDF | HTML

Se encuentra disponible una versión más nueva de este producto

open-in-new

Comparar alternativas

Misma funcionalidad con diferente configuración de pines que el dispositivo comparado

LM25148

ACTIVO

Controlador CC/CC reductor síncrono de 42 V con IQ ultrabaja Improved EMI performance with QFN package and dual random spread spectrum.

LM25085

ACTIVO

Hoja de datos

Haga su pedido ahora

Detalles del producto

Vin (min) (V)

4.5

Vin (max) (V)

42

Iout (max) (A)

10

Operating temperature range (°C)

-40 to 125

Control mode

Constant on-time (COT)

Rating

Catalog

Vout (min) (V)

1.25

Vout (max) (V)

42

Iq (typ) (A)

0.00125

Duty cycle (max) (%)

100

Vin (min) (V)

4.5

Vin (max) (V)

42

Iout (max) (A)

10

Operating temperature range (°C)

-40 to 125

Control mode

Constant on-time (COT)

Rating

Catalog

Vout (min) (V)

1.25

Vout (max) (V)

42

Iq (typ) (A)

0.00125

Duty cycle (max) (%)

100

HVSSOP (DGN)

8

14.7 mm² 3 x 4.9

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

WSON (NGQ)

8

9 mm² 3 x 3

LM25085-Q1 is an Automotive Grade product that is
AEC-Q100 Grade 1 Qualified (–40°C to 125°C
Operating Junction Temperature)
Wide 4.5V to 42V Input Voltage Range
Adjustable Current Limit Using R_DS(ON) or a
Current Sense Resistor
Programmable Switching Frequency to 1MHz
No Loop Compensation Required
Ultra-Fast Transient Response
Nearly Constant Operating Frequency with Line and
Load Variations
Adjustable Output Voltage from 1.25V
Precision ±2% Feedback Reference
Capable of 100% Duty Cycle Operation
Internal Soft-Start Timer
Integrated High Voltage Bias Regulator
Thermal Shutdown

LM25085-Q1 is an Automotive Grade product that is
AEC-Q100 Grade 1 Qualified (–40°C to 125°C
Operating Junction Temperature)
Wide 4.5V to 42V Input Voltage Range
Adjustable Current Limit Using R_DS(ON) or a
Current Sense Resistor
Programmable Switching Frequency to 1MHz
No Loop Compensation Required
Ultra-Fast Transient Response
Nearly Constant Operating Frequency with Line and
Load Variations
Adjustable Output Voltage from 1.25V
Precision ±2% Feedback Reference
Capable of 100% Duty Cycle Operation
Internal Soft-Start Timer
Integrated High Voltage Bias Regulator
Thermal Shutdown

The LM25085 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, efficient buck regulator for a wide range of applications. This high voltage controller contains a PFET gate driver and a high voltage bias regulator which operates over a wide 4.5V to 42V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultra-fast load transient response. The operating frequency remains nearly constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The PFET architecture allows 100% duty cycle operation for a low dropout voltage. Either the R_DS(ON) of the PFET or an external sense resistor can be used to sense current for over-current detection.

open-in-new

Buscar otro/a AC/DC & DC/DC controllers (external FET)

Descargar Ver vídeo con transcripción Video

Documentación técnica

star

=Principal documentación para este producto seleccionada por TI

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

Ver todo 6

	Tipo	Título		Fecha
*	Data sheet	LM25085 / -Q1 42V Constant On-Time PFET Buck Switching Controller datasheet (Rev. J)	PDF \| HTML	03 nov 2014
	Selection guide	Power Management Guide 2018 (Rev. R)		25 jun 2018
	Application note	Transient Response versus Ripple – An Analysis of Ripple Injection Techniques		28 abr 2014
	Application note	Automated Frequency Response Analyzer		09 oct 2013
	EVM User's guide	AN-1905 LM25085 Evaluation Board (Rev. B)		26 abr 2013
	Application note	Constant Current Constant Voltage Buck Converter w/LM25085 (Rev. A)		23 abr 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.

Placa de evaluación

LM25085MYEVAL — Placa de evaluación para controlador de conmutación reductor PFET de tiempo de conexión constante y

The LM25085 evaluation board provides the design engineer with a fully functional buck regulator, employing the LM25085 PFET switching controller which uses the constant on-time (COT) operating principle. The evaluation board provides a 5V output over an input range of 5.5V to 42V. The circuit (...)

Guía del usuario: PDF