Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)

LM5009A

AKTIV

Nicht synchroner Abwärtsregler (Buck), 6−95 V, großer Vin-Bereich, 150 mA, konstant aktiv

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Dieses Produkt ist weiterhin für Bestandskunden erhältlich. Neue Designs sollten ein alternatives Produkt erwägen.
Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung
LM5163 AKTIV Synchroner DC/DC-Abwärtswandler mit 100 V-Eingang und 0,5 A und extrem niedrigem IQ Synchronous rectification for smaller footprint and high efficiency and low IQ.

Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.15 Vin (min) (V) 6 Vin (max) (V) 95 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 Iq (typ) (µA) 485 Duty cycle (max) (%) 99
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.15 Vin (min) (V) 6 Vin (max) (V) 95 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 Iq (typ) (µA) 485 Duty cycle (max) (%) 99
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 VIN. 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 VOUT. This scheme ensures short-circuit control while providing minimum foldback. Other features include: thermal shutdown, undervoltage lockout (VCC), 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 VIN. 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 VOUT. This scheme ensures short-circuit control while providing minimum foldback. Other features include: thermal shutdown, undervoltage lockout (VCC), gate drive undervoltage lockout, max duty cycle limiter, and a precharge switch.

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Technische Dokumentation

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Alle anzeigen 3
Typ Titel Datum
* 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 Apr 2013

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM5009AEVAL — LM5009A-Evaluierungsmodul für Abwärtsschaltregler mit breitem Vin-Bereich, 100 V, 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 (...)

Benutzerhandbuch: PDF
Simulationsmodell

LM5009 TINA-TI Transient Reference Design

SNVM035.TSC (141 KB) - TINA-TI Reference Design
Simulationsmodell

LM5009 TINA-TI Transient Spice Model

SNVM036.ZIP (15 KB) - TINA-TI Spice Model
Berechnungstool

LM5009AQUICK-CALC — LM5009A Schnellstart-Rechner

Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VSSOP (DGK) 8 Ultra Librarian
WSON (NGU) 8 Ultra Librarian

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