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DC/DC 切換穩壓器
DC/DC 轉換器

LM63460-Q1

現行

採用強化式 QFN 封裝的車用 3-V 至 36-V、6-A、低 EMI 同步降壓轉換器

立即訂購

LM63460-Q1

現行
立即訂購

產品詳細資料

Rating Automotive Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34.2 Vout (min) (V) 1 Features Enable, Fixed soft start, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000007 Duty cycle (max) (%) 87 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34.2 Vout (min) (V) 1 Features Enable, Fixed soft start, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000007 Duty cycle (max) (%) 87 TI functional safety category Functional Safety-Capable
VQFN-FCRLF (RYF) 22 14 mm² (4 mm × 3.5 mm)
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Versatile synchronous buck DC/DC converter
    • Wide input voltage range of 3V to 36V with tolerance for load-dump transients up to 42V
    • 4A and 6A options available
    • 1% accurate adjustable output voltage from 1V to 95% VIN
    • 150°C maximum junction temperature
    • Frequency adjustable from 200kHz to 2.2MHz using the RT pin or a SYNC signal
  • Improved reliability with optimized pinout design and clearance for short-circuit-to-adjacent-pin test
  • Mitigated interference and noise technology – architecture 1 (MINT 1)
    • Enhanced HotRod™ QFN package reduces switch-node ringing
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum frequency modulation
    • Selectable FPWM or PFM mode at light loads
  • High efficiency across the full load range
    • 92.5% at 13.5VIN, 5VOUT, 6A, 2.1MHz
    • 7µA typical at 3.3VOUT no-load input current
    • 0.6µA typical shutdown quiescent current
    • 0.6V typical dropout at full load
    • External bias option for improved efficiency
  • Create a custom regulator design using the LM634x0-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Versatile synchronous buck DC/DC converter
    • Wide input voltage range of 3V to 36V with tolerance for load-dump transients up to 42V
    • 4A and 6A options available
    • 1% accurate adjustable output voltage from 1V to 95% VIN
    • 150°C maximum junction temperature
    • Frequency adjustable from 200kHz to 2.2MHz using the RT pin or a SYNC signal
  • Improved reliability with optimized pinout design and clearance for short-circuit-to-adjacent-pin test
  • Mitigated interference and noise technology – architecture 1 (MINT 1)
    • Enhanced HotRod™ QFN package reduces switch-node ringing
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum frequency modulation
    • Selectable FPWM or PFM mode at light loads
  • High efficiency across the full load range
    • 92.5% at 13.5VIN, 5VOUT, 6A, 2.1MHz
    • 7µA typical at 3.3VOUT no-load input current
    • 0.6µA typical shutdown quiescent current
    • 0.6V typical dropout at full load
    • External bias option for improved efficiency
  • Create a custom regulator design using the LM634x0-Q1 with the WEBENCH Power Designer

The LM634x0-Q1 derives from a family of automotive, synchronous, buck, DC/DC converters with excellent efficiency and ultra-low IQ. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input voltage range from 3V to 36V, with support for load-dump transients up to 42V. The converter implements soft recovery from dropout to eliminate overshoot on the output.

The LM634x0-Q1, with mitigated interference and noise technology using architecture 1 (MINT 1), incorporates numerous features for excellent EMI performance, including spread-spectrum frequency modulation, a low-EMI Enhanced HotRod QFN package that mitigates switch-node ringing, and a symmetrical pinout for excellent input capacitor placement. The switching frequency can be set between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the application requirements.

PFM mode enables frequency foldback during light-load operation, allowing an unloaded current consumption of only 7µA (typical) and high light-load efficiency. A seamless transition between PWM and PFM modes, along with low MOSFET on-resistances and an external bias input, provides exceptional efficiency and thermal performance across the entire load range. The package has several NC pins between critical power pins, which improve the Failure Modes and Effects Analysis (FMEA) result.

The LM634x0-Q1 derives from a family of automotive, synchronous, buck, DC/DC converters with excellent efficiency and ultra-low IQ. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input voltage range from 3V to 36V, with support for load-dump transients up to 42V. The converter implements soft recovery from dropout to eliminate overshoot on the output.

The LM634x0-Q1, with mitigated interference and noise technology using architecture 1 (MINT 1), incorporates numerous features for excellent EMI performance, including spread-spectrum frequency modulation, a low-EMI Enhanced HotRod QFN package that mitigates switch-node ringing, and a symmetrical pinout for excellent input capacitor placement. The switching frequency can be set between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the application requirements.

PFM mode enables frequency foldback during light-load operation, allowing an unloaded current consumption of only 7µA (typical) and high light-load efficiency. A seamless transition between PWM and PFM modes, along with low MOSFET on-resistances and an external bias input, provides exceptional efficiency and thermal performance across the entire load range. The package has several NC pins between critical power pins, which improve the Failure Modes and Effects Analysis (FMEA) result.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
功能安全資訊 LM634X0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2024/6/4
證書 LM63460EVM-2MHZ EU RoHS Declaration of Conformity (DoC) 2021/12/9

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM63460EVM — LM63460-Q1 評估模組，車用 5.5-V 至 36-V、6-A、低 EMI 同步降壓轉換器

LM63460EVM-2MHZ 高密度評估模組 (EVM) 的設計目的在於展示 LM63460-Q1 高性能、車用同步降壓 DC/DC 轉換器。EVM 可在 5.5 V 至 36 V 的廣泛輸入電壓範圍內運作，可提供高於 1% 設定點準確度，及高達 6-A 輸出電流的固定 5-V 輸出。有幾項功能可確保穩壓器在故障狀況下提供防護，包括電壓過低鎖定 (UVLO)、內部緩啟動、斷續模式過電流保護 (OCP)、開漏 PGOOD 指示器，以及過熱自動關機。LM63460-Q1 預設提供展頻頻率調變。此外，LM63460-Q1 擁有電阻器可調整的切換頻率，以及 SYNC IN (...)

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計算工具

SNVR518 — LM63440-Q1, LM63460-Q1, LM64440-Q1 and LM64460-Q1 DC/DC Converter Quickstart Design Tool

歡迎使用 LM63440-Q1、LM63460-Q1、LM64440-Q1 和 LM64460-Q1 快速入門設計工具。此獨立工具會加速協助提供電源供應器工程師採用此同步降壓電源轉換器系列的 DC/DC 降壓穩壓器進行設計。因此，使用者可以迅速達到最佳化的設計，以符合應用需求。

支援產品和硬體
計算工具

SNVR518 — LM63440-Q1, LM63460-Q1, LM64440-Q1 and LM64460-Q1 DC/DC Converter Quickstart Design Tool

歡迎使用 LM63440-Q1、LM63460-Q1、LM64440-Q1 和 LM64460-Q1 快速入門設計工具。此獨立工具會加速協助提供電源供應器工程師採用此同步降壓電源轉換器系列的 DC/DC 降壓穩壓器進行設計。因此，使用者可以迅速達到最佳化的設計，以符合應用需求。

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VQFN-FCRLF (RYF) 22 Ultra Librarian
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