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AC/DC & DC/DC converters (integrated FET)

LMR43620-Q1

現行

具低 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

Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 36 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 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 Control mode current mode Vout (min) (V) 1 Vout (max) (V) 32 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0000015
Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 36 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 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 Control mode current mode Vout (min) (V) 1 Vout (max) (V) 32 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0000015
VQFN-HR (RPE) 9 4 mm² 2 x 2
  • 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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類型 標題 日期
* Data sheet LMR436x0-Q1, 36V, 1A / 2A, Automotive Buck Converter With < 2.5µA IQ at 150°C TJMAX in 4mm2 HotRod™ QFN datasheet (Rev. F) PDF | HTML 2024年 1月 19日
White paper 克服低功耗應用中的低 IQ 挑戰 (Rev. B) PDF | HTML 2023年 4月 19日
EVM User's guide LMR43620RQ5EVM-400 EVM User's Guide PDF | HTML 2023年 1月 19日
Application note EMI Reduction Technique, Dual Random Spread Spectrum (Rev. A) 2022年 10月 19日
Certificate LMR43620RQ5EVM-400 EU RoHS Declaration of Conformity (DoC) 2022年 9月 2日
Functional safety information LMR436x0/LMR436x0-Q1 Functional Safety, FIT Rate, FMD and Pin FMA PDF | HTML 2022年 3月 18日
User guide LMR43620-Q1 EVM User's Guide (Rev. B) PDF | HTML 2021年 12月 7日
Technical article Lowering audible noise in automotive applications with TI’s DRSS technology PDF | HTML 2021年 3月 18日
Certificate LMR43620MQ3EVM-2M EU Declaration of Conformity (DoC) 2020年 9月 8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

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 在低負載下搭配超低運作靜態電流和高效率。採用 2-mm x 2-mm HotRod™ 封裝的 LMR43620-Q1 提供超小型、低 EMI 解決方案尺寸。

使用指南: PDF | HTML
TI.com 無法提供
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 在低負載下搭配超低運作靜態電流和高效率。採用 2x2-mm HotRod™ 封裝的 LMR43620-Q1 提供超小型、低 EMI 解決方案尺寸。

使用指南: PDF | HTML
TI.com 無法提供
模擬型號

LMR43620MSC3-Q1 PSpice Transient Model

SNVMC98.ZIP (315 KB) - PSpice Model
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Gerber 檔案

LMR43620-Q1 EVM Design Files

SNVC247.ZIP (3139 KB)
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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。
Test report: PDF
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。
Test report: PDF
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  • 鉛塗層/球物料
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  • MTBF/FIT 估算值
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  • 資格摘要
  • 進行中可靠性監測
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