Startseite Energiemanagement AC/DC- und DC/DC-Controller (externer FET)
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Energiemanagement
AC/DC- und DC/DC-Controller (externer FET)

LM34966-Q1

AKTIV

Nicht synchroner Aufwärts-, Flyback- & SEPIC-Controller, 500 KHz, großer VIN-Bereich

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Datenblatt

LM34966-Q1

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Vin (min) (V) 1.5 Vin (max) (V) 40 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost, Flyback, SEPIC Rating Automotive Vout (min) (V) 1.5 Vout (max) (V) 300 Features Adjustable current limit, Enable, Light Load Efficiency, Nonsynchronous rectification, Power good, UVLO adjustable Iq (typ) (µA) 490 Duty cycle (max) (%) 93 TI functional safety category Functional Safety-Capable
Vin (min) (V) 1.5 Vin (max) (V) 40 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost, Flyback, SEPIC Rating Automotive Vout (min) (V) 1.5 Vout (max) (V) 300 Features Adjustable current limit, Enable, Light Load Efficiency, Nonsynchronous rectification, Power good, UVLO adjustable Iq (typ) (µA) 490 Duty cycle (max) (%) 93 TI functional safety category Functional Safety-Capable
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C TA
    • Maximum operating temperature 150°C TJ
  • Functional Safety-Capable
  • Suited for wide input operating range car battery applications
    • 3.5-V to 40-V operating range (45-V abs max)
    • 2.97-V to 16-V when BIAS = VCC
    • Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
    • Input transient protection up to 45 V
    • Minimized battery drain
      • Low shutdown current ( IQ ≤ 2.6 µA )
      • Low operating current ( IQ ≤ 490 µA )
  • Small solution size and low cost
    • Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
    • Minimized undershoot during cranking (start-stop application)
  • Higher efficiency with low-power dissipation
    • 100-mV ±7% accurate current limit threshold
    • Strong 1.0-A peak standard MOSFET driver
    • Supports external VCC supply
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Dynamically programmable switching frequency from 100 kHz to 500 kHz
  • Integrated protection features
    • Constant peak current limiting over input voltage
    • Hiccup mode overload protection
    • Programmable line UVLO
    • OVP protection
    • Thermal shutdown
  • Accurate ±1% accuracy feedback reference
  • Programmable extra slope compensation
  • Adjustable soft start
  • PGOOD indicator
  • 14-Pin HTSSOP package (5.0 mm × 4.4 mm)
  • Create a custom design using the LM34966-Q1 with the WEBENCH power designer
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C TA
    • Maximum operating temperature 150°C TJ
  • Functional Safety-Capable
  • Suited for wide input operating range car battery applications
    • 3.5-V to 40-V operating range (45-V abs max)
    • 2.97-V to 16-V when BIAS = VCC
    • Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
    • Input transient protection up to 45 V
    • Minimized battery drain
      • Low shutdown current ( IQ ≤ 2.6 µA )
      • Low operating current ( IQ ≤ 490 µA )
  • Small solution size and low cost
    • Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
    • Minimized undershoot during cranking (start-stop application)
  • Higher efficiency with low-power dissipation
    • 100-mV ±7% accurate current limit threshold
    • Strong 1.0-A peak standard MOSFET driver
    • Supports external VCC supply
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Dynamically programmable switching frequency from 100 kHz to 500 kHz
  • Integrated protection features
    • Constant peak current limiting over input voltage
    • Hiccup mode overload protection
    • Programmable line UVLO
    • OVP protection
    • Thermal shutdown
  • Accurate ±1% accuracy feedback reference
  • Programmable extra slope compensation
  • Adjustable soft start
  • PGOOD indicator
  • 14-Pin HTSSOP package (5.0 mm × 4.4 mm)
  • Create a custom design using the LM34966-Q1 with the WEBENCH power designer

The LM34966-Q1 is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies. The device can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V. The internal VCC regulator also supports BIAS pin operation up to 40 V (45-V absolute maximum) for automotive load dump. The switching frequency is dynamically programmable with an external resistor from 100 kHz to 500 kHz.

The LM34966-Q1 is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies. The device can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V. The internal VCC regulator also supports BIAS pin operation up to 40 V (45-V absolute maximum) for automotive load dump. The switching frequency is dynamically programmable with an external resistor from 100 kHz to 500 kHz.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM34966-Q1 500kHz Wide VIN Non-synchronous Boost/SEPIC/Flyback Controller datasheet PDF | HTML 23 Sep 2020
Functional safety information LM34966-Q1, LM5156x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution (Rev. C) PDF | HTML 28 Apr 2021
EVM User's guide LM34966EVM-FLY Flyback Evaluation Module PDF | HTML 28 Sep 2020
Certificate LM34966EVM-FLY EU Declaration of Conformity (DoC) 10 Sep 2020

Design und Entwicklung

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

Evaluierungsplatine

LM34966EVM-FLY — LM34966 Flyback-Controller – Evaluierungsmodul

The LM34966EVM-FLY evaluation module showcases the features and performance of the LM34966-Q1 as wide input non-synchronous flyback controller. The standard configuration is designed to provide a regulated output of 5V at 4A from an input of 18V to 36V, switching at 250 kHz. This evaluation (...)
Benutzerhandbuch: PDF | HTML
Nicht verfügbar auf TI.com
Simulationsmodell

LM34966-Q1 PSpice Transient Model (Rev. B)

SNVMC41B.ZIP (222 KB) - PSpice Model
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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HTSSOP (PWP) 14 Ultra Librarian
Es gelten die allgemeinen Geschäftsbedingungen von TI für Evaluierungsartikel.

Bestellen & Qualität

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

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