LM5009A

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Regulador reductor no síncrono de tiempo de conexión constante, Vin amplia de 6 V-95 V y 150 mA

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document-pdfAcrobat LM5009A 100-V, 150-mA Constant ON-Time Buck Switching Regulator datasheet (Rev. H) (Inglés) PDF | HTML

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LM5163

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Convertidor DC/DC reductor síncrono con entrada de 100 V, 0.5 A e IQ ultrabaja Synchronous rectification for smaller footprint and high efficiency and low IQ.

LM5009A

ACTIVO

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Detalles del producto

Iout (max) (A)

0.15

Vin (min) (V)

6

Vin (max) (V)

95

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

50

Switching frequency (max) (kHz)

600

Features

Enable, Over Current Protection

Control mode

Constant on-time (COT)

Vout (min) (V)

2.5

Vout (max) (V)

85

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000485

Iout (max) (A)

0.15

Vin (min) (V)

6

Vin (max) (V)

95

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

50

Switching frequency (max) (kHz)

600

Features

Enable, Over Current Protection

Control mode

Constant on-time (COT)

Vout (min) (V)

2.5

Vout (max) (V)

85

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000485

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

WSON (NGU)

8

16 mm² 4 x 4

Operating Input Voltage Range: 6 V to 95 V
Integrated 100-V, N-Channel Buck Switch
Internal Start-Up Regulator
No Loop Compensation Required
Ultra-Fast Transient Response
ON Time Varies Inversely With Input Voltage
Operating Frequency Remains Constant With Varying Line Voltage and Load Current
Adjustable Output Voltage From 2.5 V
Highly Efficient Operation
Precision Internal Reference
Low Bias Current
Intelligent Current Limit
Thermal Shutdown
8-Pin VSSOP and 8-Pin WSON (4 mm × 4 mm) Packages

Operating Input Voltage Range: 6 V to 95 V
Integrated 100-V, N-Channel Buck Switch
Internal Start-Up Regulator
No Loop Compensation Required
Ultra-Fast Transient Response
ON Time Varies Inversely With Input Voltage
Operating Frequency Remains Constant With Varying Line Voltage and Load Current
Adjustable Output Voltage From 2.5 V
Highly Efficient Operation
Precision Internal Reference
Low Bias Current
Intelligent Current Limit
Thermal Shutdown
8-Pin VSSOP and 8-Pin WSON (4 mm × 4 mm) Packages

The LM5009A is a functional variant of the LM5009 COT buck switching regulator. The functional differences of the LM5009A are: The minimum input operating voltage is 6 V, the ON-time equation is slightly different, and the requirement for a minimum load current is removed.

The LM5009A step-down switching regulator features all of the functions required to implement a low cost, efficient, buck bias regulator. This high voltage regulator contains an 100-V N-channel buck switch. The device is easy to implement and is provided in the 8-pin VSSOP and the thermally enhanced 8-pin WSON packages. The regulator is based on a control scheme using an ON time inversely proportional to V_IN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to V_OUT. This scheme ensures short-circuit control while providing minimum foldback. Other features include: thermal shutdown, undervoltage lockout (V_CC), gate drive undervoltage lockout, max duty cycle limiter, and a precharge switch.

The LM5009A is a functional variant of the LM5009 COT buck switching regulator. The functional differences of the LM5009A are: The minimum input operating voltage is 6 V, the ON-time equation is slightly different, and the requirement for a minimum load current is removed.

The LM5009A step-down switching regulator features all of the functions required to implement a low cost, efficient, buck bias regulator. This high voltage regulator contains an 100-V N-channel buck switch. The device is easy to implement and is provided in the 8-pin VSSOP and the thermally enhanced 8-pin WSON packages. The regulator is based on a control scheme using an ON time inversely proportional to V_IN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to V_OUT. This scheme ensures short-circuit control while providing minimum foldback. Other features include: thermal shutdown, undervoltage lockout (V_CC), gate drive undervoltage lockout, max duty cycle limiter, and a precharge switch.

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Documentación técnica

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Ver todo 3

	Tipo	Título		Fecha
*	Data sheet	LM5009A 100-V, 150-mA Constant ON-Time Buck Switching Regulator datasheet (Rev. H)	PDF \| HTML	30 sep 2016
	White paper	Wide VIN power management ICs simplify white paper (Rev. A)		19 sep 2013
	EVM User's guide	AN-1955 LM5009A Evaluation Board (Rev. A)		30 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

LM5009AEVAL — Módulo de evaluación LM5009A de regulador reductor de conmutación de Vin amplia de 100 V y 150 mA

The LM5009AEVAL evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 5V output over an input range of 8V to 75V. The circuit delivers load currents to 150 mA, with current (...)

Guía del usuario: PDF