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AC/DC 和 DC/DC 轉換器 (整合式 FET)

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

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產品規格表

LM63460-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34.2 Iq (typ) (µA) 7 Duty cycle (max) (%) 87
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34.2 Iq (typ) (µA) 7 Duty cycle (max) (%) 87
VQFN-FCRLF (RYF) 22 14 mm² 4 x 3.5
  • 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
  • Designed for low EMI requirements
    • Enhanced HotRod™ QFN package with dual input paths reduces switch-node ringing
    • 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 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
  • Designed for low EMI requirements
    • Enhanced HotRod™ QFN package with dual input paths reduces switch-node ringing
    • 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 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 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 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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類型 標題 日期
* Data sheet LM634x0-Q1 3V to 36V, 4A and 6A, Automotive, Synchronous Buck DC/DC Converters With Adjustable Switching Frequency, Optimized for Reliability and Low EMI datasheet (Rev. C) PDF | HTML 2024年 8月 23日
Functional safety information LM634X0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2024年 6月 4日
User guide LM63460-Q1 and LM64460-Q1 EVM User's Guide PDF | HTML 2021年 12月 16日
Certificate LM63460EVM-2MHZ EU RoHS Declaration of Conformity (DoC) 2021年 12月 9日

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 5.5V 至 36V 的廣泛輸入電壓範圍內運作，可提供高於 1% 設定點精度，及高達 6A 輸出電流的固定 5V 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 (...)

使用指南: PDF | HTML
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計算工具

LM63460-LM64460DESIGN-CALC — LM63440-Q1、LM63460-Q1、LM64440-Q1 和 LM64460-Q1 快速入門設計工具

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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計算工具

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

Welcome to the LM63440-Q1, LM63460-Q1, LM64440-Q1 and LM64460-Q1 quick start design tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator based on this family of synchronous buck power converters. As such, the user can expeditiously (...)

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產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
LM63460-Q1 — 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 LM64460-Q1 — 車用 3-V 至 36-V、6-A、低 EMI 同步降壓轉換器
硬體開發
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
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PCB 佈局

LM63460-Q1, LM64460-Q1 EVM PCB Layout Files

SNVR515.ZIP (5089 KB)
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN-FCRLF (RYF) 22 Ultra Librarian
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