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

LM2833

AKTIV

DC/DC-Abwärtsschaltregler, 1,5MHz/3MHz, 3,0A

Eine neuere Version dieses Produkts ist verfügbar

Dieses Produkt ist weiterhin für Bestandskunden erhältlich. Neue Designs sollten ein alternatives Produkt erwägen.
Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung
TPS628503-Q1 AKTIV Abwärtswandler für die Automobilindustrie, 2,7 bis 6 V, 3 A, im SOT583-Gehäuse This product has higher efficiency, lower EMI and a smaller solution size.

Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 3000 Features Enable, Light Load Efficiency, Light load efficiency Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.5 Iq (typ) (µA) 3200 Duty cycle (max) (%) 95
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 3000 Features Enable, Light Load Efficiency, Light load efficiency Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.5 Iq (typ) (µA) 3200 Duty cycle (max) (%) 95
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9 WSON (DSC) 10 9 mm² 3 x 3
  • Input Voltage Range of 3.0V to 5.5V
  • Output Voltage Range of 0.6V to 4.5V
  • Tiny MSOP-PowerPAD 10 or WSON-10 Package
  • 3.0A Steady-State Output Current
  • High Switching Frequencies
    • 1.5MHz (LM2833X)
    • 3.0MHz (LM2833Z)
  • Enable Pin
  • 56mΩ PMOS Switch
  • 0.6V, 2% Internal Voltage Reference Over Line and Temperature
  • Internal Soft-Start
  • Internally Compensated Peak Current-Mode Control
  • Cycle-by-Cycle Current Limit and Thermal Shutdown
  • Frequency Foldback Protection
  • Input Voltage UVLO (Under-Voltage Lockout)
  • Output Over-Voltage Protection

All trademarks are the property of their respective owners.

  • Input Voltage Range of 3.0V to 5.5V
  • Output Voltage Range of 0.6V to 4.5V
  • Tiny MSOP-PowerPAD 10 or WSON-10 Package
  • 3.0A Steady-State Output Current
  • High Switching Frequencies
    • 1.5MHz (LM2833X)
    • 3.0MHz (LM2833Z)
  • Enable Pin
  • 56mΩ PMOS Switch
  • 0.6V, 2% Internal Voltage Reference Over Line and Temperature
  • Internal Soft-Start
  • Internally Compensated Peak Current-Mode Control
  • Cycle-by-Cycle Current Limit and Thermal Shutdown
  • Frequency Foldback Protection
  • Input Voltage UVLO (Under-Voltage Lockout)
  • Output Over-Voltage Protection

All trademarks are the property of their respective owners.

The LM2833 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin WSON or MSOP-PowerPAD package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2833 is easy to use. The ability to drive 3.0A loads with an internal 56 mΩ PMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 1.5MHz or 3.0MHz, allowing the use of extremely small surface mount inductors and capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 300nA. The LM2833 utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, cycle-by-cycle current limit, frequency foldback, thermal shutdown, and output over-voltage protection.

The LM2833 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin WSON or MSOP-PowerPAD package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2833 is easy to use. The ability to drive 3.0A loads with an internal 56 mΩ PMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 1.5MHz or 3.0MHz, allowing the use of extremely small surface mount inductors and capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 300nA. The LM2833 utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, cycle-by-cycle current limit, frequency foldback, thermal shutdown, and output over-voltage protection.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM2833 1.5MHz/3MHz 3.0A Step-Down DC-DC Switching Regulator datasheet (Rev. E) 03 Apr 2013
EVM User's guide AN-1843 LM2833X LLP Demo Board (Rev. B) 26 Mai 2013
EVM User's guide AN-1717 LM2833X eMSOP Demo Board (Rev. C) 29 Apr 2013
EVM User's guide AN-1844 LM2833Z eMSOP Demo Board (Rev. B) 25 Apr 2013
EVM User's guide AN-1845 LM2833Z LLP Demo Board (Rev. B) 25 Apr 2013
Application note AN-1973 Benefits and Challenges of High-Frequency Regulators (Rev. A) 23 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

LM2833XSDEVAL — LM2833X LLP – Evaluierungsmodul für DC/DC-Abwärtsschaltregler mit 1,5 MHz 3,0 A

The LM2833X LLP Demo Board is designed to demonstrate the capabilities of the LM2833X 1.5MHz switching regulator in the LLP-10 package.

The demo board is configured to provide an output of 1.2V at up to 3A from an input voltage range of 3V to 5.5V. The board is thermally optimized with the small (...)

Benutzerhandbuch: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HVSSOP (DGQ) 10 Ultra Librarian
WSON (DSC) 10 Ultra Librarian

Bestellen & Qualität

Beinhaltete Information:
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  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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