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LMQ66430

アクティブ

1.5μA の静止電流 (IQ)、低 EMI、36V、3A 同期整流降圧コンバータ

ご注文はこちら

LMQ66430

アクティブ
ご注文はこちら

製品詳細

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 35 Vout (min) (V) 1 Features Enable, Fixed Output, Fixed soft start, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification EMI & noise features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Spread Spectrum, Switch-node waveshaping Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0000015 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable Sector Robotics, Test & measurement
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 35 Vout (min) (V) 1 Features Enable, Fixed Output, Fixed soft start, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification EMI & noise features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Spread Spectrum, Switch-node waveshaping Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0000015 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable Sector Robotics, Test & measurement
VQFN-FCRLF (RXB) 14 6.76 mm² (2.6 mm × 2.6 mm)
  • Functional Safety-Capable
  • Designed for industrial applications:
    • Junction temperature range –40°C to +150°C
    • NC pin between critical pins for better reliability
    • Best in-class pin FMEA
    • Input transient protection up to 42V
    • Wide input voltage range after start-up: 2.7V (falling threshold) to 36V
    • Adjustable output up to 95% of VIN, 3.3V and 5V fixed VOUT options available
  • Mitigated interference and noise technology – architecture 2 (MINT 2):
    • Integrated bypass, boot capacitors reduce EMI
    • Dual random spread spectrum reduces peak emissions
    • Enhanced HotRod™ QFN package minimizes switch node ringing
    • Adjustable FSW: 200kHz – 2.2MHz with RT pin
  • Greater than 85% efficiency at 1mA
  • Miniature design size and low component cost:
    • Integrated input bypass capacitors and bootstrap capacitor reducing EMI
    • 2.6mm × 2.6mm enhanced HotRod QFN package with wettable flanks
    • Internal control loop compensation
  • Functional Safety-Capable
  • Designed for industrial applications:
    • Junction temperature range –40°C to +150°C
    • NC pin between critical pins for better reliability
    • Best in-class pin FMEA
    • Input transient protection up to 42V
    • Wide input voltage range after start-up: 2.7V (falling threshold) to 36V
    • Adjustable output up to 95% of VIN, 3.3V and 5V fixed VOUT options available
  • Mitigated interference and noise technology – architecture 2 (MINT 2):
    • Integrated bypass, boot capacitors reduce EMI
    • Dual random spread spectrum reduces peak emissions
    • Enhanced HotRod™ QFN package minimizes switch node ringing
    • Adjustable FSW: 200kHz – 2.2MHz with RT pin
  • Greater than 85% efficiency at 1mA
  • Miniature design size and low component cost:
    • Integrated input bypass capacitors and bootstrap capacitor reducing EMI
    • 2.6mm × 2.6mm enhanced HotRod QFN package with wettable flanks
    • Internal control loop compensation

The LMQ664x0 is the industry smallest 36V, 3A (available in 2A and 1A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7V to 36V (after start-up or after operating) with transients up to 42V.

The LMQ664x0 is specifically designed to meet low standby power requirements for always-on, industrial applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5µA at 13.5VIN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are optimized for an ultra-small design size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized pinout. The RT pin can be used to set the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (excellent choice pin FMEA). Mitigated interference and noise technology using architecture 2 features (MINT 2) enable the device to support low-EMI applications. The rich feature set of the LMQ664x0 is designed to simplify implementation for a wide range of industrial end equipment.

The LMQ664x0 is the industry smallest 36V, 3A (available in 2A and 1A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7V to 36V (after start-up or after operating) with transients up to 42V.

The LMQ664x0 is specifically designed to meet low standby power requirements for always-on, industrial applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5µA at 13.5VIN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are optimized for an ultra-small design size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized pinout. The RT pin can be used to set the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (excellent choice pin FMEA). Mitigated interference and noise technology using architecture 2 features (MINT 2) enable the device to support low-EMI applications. The rich feature set of the LMQ664x0 is designed to simplify implementation for a wide range of industrial end equipment.
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技術資料

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上位の文書 タイプ タイトル フォーマットオプション 最新の英語版をダウンロード 日付
機能安全情報 LMQ664x0 and LMQ664x0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2024/11/05
アプリケーション概要 Step-Down Converter Capacitor Integration Reducing Effort for CISPR 25 Class 5 Compliance PDF | HTML 2023/01/18
技術記事 How buck regulators with integrated capacitors help lower EMI and save board space PDF | HTML 2022/03/16
証明書 LMQ66430EVM-2M EU RoHS Declaration of Conformity (DoC) 2021/10/21

設計と開発

その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。

評価ボード

LMQ66430-2EVM — LMQ66430 Enhanced HotRod™ QFN 封止、36V、3A、同期整流降圧コンバータの評価基板

LMQ66430-2EVM 評価基板 (EVM) は、最大 36V の入力電圧に対応し、最大 3A の負荷電流を供給できる同期整流降圧 DC/DC コンバータである LMQ66430-Q1 デバイスの動作と性能の評価に役立ちます。LMQ66430-Q1 は、超低静止電流、軽負荷時の高効率、小型の 2.6mm × 2.6mm Enhanced HotRod™ QFN パッケージに封止済みで、低 EMI の小型ソリューション サイズに貢献します。

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シミュレーション・モデル

LMQ66430 PSpice Transient Model

SNVMCA9.ZIP (161 KB) - PSpice モデル
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パッケージ ピン数 CAD シンボル、フットプリント、および 3D モデル
VQFN-FCRLF (RXB) 14 Ultra Librarian
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