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LMR43620-Q1

現行

具有低 IQ 的車用 3-V 至 36-V、2-A、低 EMI 同步降壓穩壓器

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產品規格表

LMR43620-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Topology Buck Iout (max) (A) 2 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 32 Vout (min) (V) 1 Features Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO Fixed, 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) 0.0000015 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable Sector Robotics
Rating Automotive Topology Buck Iout (max) (A) 2 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 32 Vout (min) (V) 1 Features Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO Fixed, 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) 0.0000015 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable Sector Robotics
VQFN-HR (RPE) 9 4 mm² (2 mm × 2 mm)
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Greater than 85% efficiency at 1mA
    • 1.2µA total non-switching IQ at 13.5VIN, fixed 3.3VOUT
  • Miniature design size and low component cost
    • 2mm × 2mm HotRod™ package with wettable flanks
    • Internal compensation
  • Optimized for ultra-low EMI requirements
    • Spread spectrum reduces peak emissions
    • Meets CISPR25 Class 5 standard
    • Pin selectable FPWM mode for constant frequency at light loads with MODE/SYNC pin
    • FSW synchronization with MODE/SYNC pin
  • Designed for automotive applications
    • –40°C to +150°C junction temperature range
    • Supports 42V automotive load dump
    • Supports 3VIN for automotive cold crank
    • Adjustable up to 95% of VIN, 3.3V and 5V fixed VOUT options available
  • Designed for scalable power supplies
    • 200kHz to 2.2MHz (RT pin) adjustable FSW
    • Pin compatible with:
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Greater than 85% efficiency at 1mA
    • 1.2µA total non-switching IQ at 13.5VIN, fixed 3.3VOUT
  • Miniature design size and low component cost
    • 2mm × 2mm HotRod™ package with wettable flanks
    • Internal compensation
  • Optimized for ultra-low EMI requirements
    • Spread spectrum reduces peak emissions
    • Meets CISPR25 Class 5 standard
    • Pin selectable FPWM mode for constant frequency at light loads with MODE/SYNC pin
    • FSW synchronization with MODE/SYNC pin
  • Designed for automotive applications
    • –40°C to +150°C junction temperature range
    • Supports 42V automotive load dump
    • Supports 3VIN for automotive cold crank
    • Adjustable up to 95% of VIN, 3.3V and 5V fixed VOUT options available
  • Designed for scalable power supplies
    • 200kHz to 2.2MHz (RT pin) adjustable FSW
    • Pin compatible with:

The LMR436x0-Q1 is the industry smallest 36V, 2A, and 1A synchronous step-down DC/DC converters in a 2mm × 2mm HotRod package. This easy-to-use converter supports a wide input voltage range of 3.0V to 36V with transients up to 42V.

The LMR43620-Q1 is specifically designed to meet low standby power requirements for always on, automotive applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded 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 provide exceptional efficiency across the entire load range.

The control architecture and feature set are designed for an ultra-small design size. The device uses peak current mode control to minimize output capacitance. The LMR436x0-Q1 minimizes input filter size by using dual random spread spectrum, a low-EMI HotRod package, and an optimized pinout. The MODE/SYNC and RT pin variants can be used to set or synchronize the frequency between 200kHz and 2.2MHz to avoid noise sensitive frequency bands.

The rich feature set of the LMR436x0-Q1 is designed to simplify implementation for a wide range of automotive end equipments.

The LMR436x0-Q1 is the industry smallest 36V, 2A, and 1A synchronous step-down DC/DC converters in a 2mm × 2mm HotRod package. This easy-to-use converter supports a wide input voltage range of 3.0V to 36V with transients up to 42V.

The LMR43620-Q1 is specifically designed to meet low standby power requirements for always on, automotive applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded 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 provide exceptional efficiency across the entire load range.

The control architecture and feature set are designed for an ultra-small design size. The device uses peak current mode control to minimize output capacitance. The LMR436x0-Q1 minimizes input filter size by using dual random spread spectrum, a low-EMI HotRod package, and an optimized pinout. The MODE/SYNC and RT pin variants can be used to set or synchronize the frequency between 200kHz and 2.2MHz to avoid noise sensitive frequency bands.

The rich feature set of the LMR436x0-Q1 is designed to simplify implementation for a wide range of automotive end equipments.
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技術文件

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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
* 資料表 LMR436x0-Q1 36V, 1A / 2A, Automotive Buck Converters With < 2.5µA IQ at 150°C TJMAX in 4mm2 HotRod™ QFN datasheet (Rev. H) PDF | HTML 2026/3/25
功能安全資訊 LMR436x0 and LMR436x0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2025/8/27
白皮書 克服低功耗應用中的低 IQ 挑戰 (Rev. B) PDF | HTML Download English Version (Rev.B) PDF | HTML 2023/4/19
應用說明 EMI Reduction Technique, Dual Random Spread Spectrum (Rev. A) 2022/10/19
證書 LMR43620RQ5EVM-400 EU RoHS Declaration of Conformity (DoC) 2022/9/2
技術文章 Lowering audible noise in automotive applications with TI’s DRSS technology PDF | HTML 2021/3/18
證書 LMR43620MQ3EVM-2M EU Declaration of Conformity (DoC) 2020/9/8

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

LMR43620MQ3EVM-2M — LMR43620-Q1 36-V 輸入、3.3-V 輸出、2-A 同步降壓轉換器評估模組

LMR43620MQ3EVM-2M 評估模組 (EVM) 可協助設計人員評估 LMR43620-Q1 廣泛輸入降壓穩壓器的運作及性能。LMR43620-Q1 為一款簡單易用的同步降壓 DC/DC 轉換器，可從最高 36 V 的輸入電壓中驅動高達 2 A 負載電流。LMR43620-Q1 在低負載下具有超低運作靜態電流和高效率。LMR43620-Q1 採用小型 2-mm x 2-mm HotRod™ 封裝，可提供超小型、低 EMI 解決方案尺寸。

使用指南: PDF | HTML
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開發板

LMR43620RQ5EVM-400 — LMR43620-Q1 36-V 輸入、5-V 輸出、2-A 同步降壓轉換器評估模組

LMR43620RQ5EVM-400 評估模組 (EVM) 可協助評估 LMR43620-Q1 廣泛輸入降壓穩壓器的運作情形及性能。LMR43620-Q1 為一款簡單易用的同步降壓 DC/DC 轉換器，可從最高 36 V 的輸入電壓中驅動高達 2 A 負載電流。LMR43620-Q1 在低負載下具有超低運作靜態電流和高效率。LMR43620-Q1 採用小型 2x2 mm HotRod™ 封裝，提供超小型、低 EMI 解決方案尺寸。

使用指南: PDF | HTML
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模擬型號

LMR43620MSC3-Q1 PSpice Transient Model

SNVMC98.ZIP (315 KB) - PSpice 模型
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參考設計

PMP22670 — 24-V 至 36-V 輸入、3.3-V 輸出同步降壓轉換器參考設計

此參考設計展示了搭載整合式 FET 與小型尺寸的單相降壓轉換器。此設計接受 24 Vin 至 36 Vin 的輸入電壓，並提供高達 1-A 連續穩壓 3.3-V 輸出和 1.2-A 峰值。本電路板共有兩個修訂版設計與製造，可比較兩種 PCB 配置圖之間的 EMI 與熱性能。兩個版本的電路板使用相同的電路。
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參考設計

PMP31245 — 具預升壓和 10.6-W 輸出功率的車用微控制器電源參考設計

此參考設計提供 5 V、3.3 V 及 1.0 V，可為使用三個降壓轉換器及預升壓轉換器的汽車微控制器供電。預升壓穩壓器可在 8.5 V 下從 3.2-V 輸入電壓提供 1.25-A 連續輸出電流。此設計的目的是主要使用單側元件配置，以將降壓解決方案安裝在小型電路板區域內。
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參考設計

TIDA-060048 — 車用緊急呼叫 (eCall) 音訊子系統參考設計

汽車緊急呼叫 (eCall) 系統的效率與診斷需求，為音訊子系統帶來錄音診斷、喇叭診斷及低功耗等特殊要求。此設計展示車用雙通道音訊轉碼器和 D 類音訊放大器在 eCall 上的應用。此參考設計也強調重要設計因素與我們的設計優勢，例如低功耗與效率，響亮清楚的音訊輸出，以及整合式診斷與保護。
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參考設計

TIDEP-01036 — mmWave 雷達感測器腳踢開啟參考設計

此設計可為以 TI 單晶片 77GHz 車用雷達感測器 AWRL1432 為基礎的腳踢開啟 (KTO) 終端應用，提供低成本的小型參考。AWRL1432 裝置執行以機器學習為基礎的手勢感測演算法，可進行踢蹴偵測，以啟動汽車的電動升降門、電動後車廂或電動滑動門。

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VQFN-HR (RPE) 9 Ultra Librarian
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