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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LMS3635-Q1

現行

3.5-A、36-V 同步、400-kHz 降壓轉換器

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
LM60440-Q1 現行 採用增強型 EMI QFN 封裝，具有可潤濕側翼的車用 36-V、4-A 同步轉換器 Smaller footprint, lower EMI, higher efficiency, 3 A and 4 A variants available
LM63635-Q1 現行 具展頻功能的車用、3.5V 至 36V、3.25A 降壓式電壓轉換器 Best-in-Class BLR Performance, Pin-Spacing for High Reliability and Robustness

LMS3635-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 Topology Buck Type Converter Iout (max) (A) 3.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 500 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, 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) 15 Iq (typ) (µA) 15 Duty cycle (max) (%) 98
Rating Automotive Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 500 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, 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) 15 Iq (typ) (µA) 15 Duty cycle (max) (%) 98
VQFN-HR (RNL) 22 20 mm² 5 x 4
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM classification level 2
    • Device CDM classification level C6
  • 96% Peak efficiency while converting 12 V to 5 V
  • Low EMI and minimized switch node ringing
  • 400-kHz (±10%) fixed switching frequency
  • –40°C to +150°C junction temperature range
  • External frequency synchronization
  • RESET output with internal filter and 3-ms release timer
  • Automatic light load mode for improved efficiency
  • Pin-selectable forced PWM mode
  • Built-In compensation, soft start, current limit, thermal shutdown, and UVLO
  • 0.35-V dropout with 3.5-A Load at 25°C (Typical)
  • 18-µA IQ_VIN: quiescent current at 3.3 VOUT and no load (typical)
  • Output voltage: 5 V, 3.3 V, and ADJ (1 V to 20 V)
  • ±1.5% reference voltage tolerance
  • Create a custom design using the LMS3655-Q1 with the WEBENCH Power Designer
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM classification level 2
    • Device CDM classification level C6
  • 96% Peak efficiency while converting 12 V to 5 V
  • Low EMI and minimized switch node ringing
  • 400-kHz (±10%) fixed switching frequency
  • –40°C to +150°C junction temperature range
  • External frequency synchronization
  • RESET output with internal filter and 3-ms release timer
  • Automatic light load mode for improved efficiency
  • Pin-selectable forced PWM mode
  • Built-In compensation, soft start, current limit, thermal shutdown, and UVLO
  • 0.35-V dropout with 3.5-A Load at 25°C (Typical)
  • 18-µA IQ_VIN: quiescent current at 3.3 VOUT and no load (typical)
  • Output voltage: 5 V, 3.3 V, and ADJ (1 V to 20 V)
  • ±1.5% reference voltage tolerance
  • Create a custom design using the LMS3655-Q1 with the WEBENCH Power Designer

The LMS3635-Q1 and LMS3655-Q1 synchronous buck regulators are optimized for high performance applications, providing an output voltage of 3.3 V, 5 V, or an adjustable output of 1 V to 20 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads.

Advanced high-speed circuitry allows the LMS3655-Q1 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz while also enabling a continuous load current of 5.5 A. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design.

An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space.

The LMS3635-Q1 and LMS3655-Q1 synchronous buck regulators are optimized for high performance applications, providing an output voltage of 3.3 V, 5 V, or an adjustable output of 1 V to 20 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads.

Advanced high-speed circuitry allows the LMS3655-Q1 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz while also enabling a continuous load current of 5.5 A. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design.

An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space.
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類型 標題 日期
* Data sheet LMS3635-Q1 3.5-A, LMS3655-Q1 5.5-A, 36-V Synchronous, 400-kHz Step-Down Converter datasheet (Rev. C) PDF | HTML 2021年 8月 1日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Analog Design Journal Clutter‐free power supplies for RF converters in radar applications (Part 1)  2021年 3月 18日
Technical article Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 2019年 12月 11日
EVM User's guide LMS36x5-Q1 EVM User's Guide (Rev. A) 2018年 4月 13日
Application note Designing High Performance, Low-EMI, Automotive Power Supplies 2017年 9月 30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

DS90UB981-Q1EVM — DS90UB981-Q1 DSI 至 FPD-Link IV 橋接串聯器評估模組

DS90Ux981-Q1EVM 是用於評估 DS90Ux981-Q1 MIPI DS 至 FPD-Link IV 串聯器的評估模組 (EVM)。DS90Ux981-Q1 支援超高解析度，包括在 60Hz 下每像素 30 位元的 4K。2 個 MIPI DSI 連接埠輸出與 MIPI DSI v1.3.1 和 DPHY v1.2 相容，速度可達每通道 2.5Gbps，FPD-Link 介面在 FPD-Link IV 模式下支援每通道最高 10.8Gbps，或在 FPD-Link III 模式下支援每通道最高 3.675Gbps。DS90Ux981-Q1EVM 的 FPD-Link (...)
要求
開發板

DS90UB981-Q1MEVM — DS90UB981-Q1 4K DSI 至 FPD-Link IV 橋接器串聯器評估模組

DS90Ux981-Q1MEVM 是用於評估 DS90Ux981-Q1 MIPI DSI 至 FPD-Link IV 串聯器的評估模組。DS90Ux981-Q1 支援超高解析度，包括在 60Hz 下每像素 30 位元的 4K。2 個 MIPI DSI 連接埠輸出與 MIPI DSI v1.3.1 和 DPHY v1.2 相容，速度可達每通道 2.5Gbps，FPD-Link 介面在 FPD-Link IV 模式下支援每通道最高 10.5Gbps，或在 FPD-Link III 模式下支援每通道最高 3.675Gbps。DS90Ux981-Q1MEVM 的 FPD-Link (...)
要求
開發板

DS90UB983-Q1EVM — DS90UB983-Q1 DisplayPort 至 FPD-Link IV 橋接串聯器評估模組

DS90Ux983-Q1EVM 是用於評估 DS90Ux983-Q1 DisplayPort 至 FPD-Link IV 串聯器的評估模組。DS90Ux983-Q1 支援超高解析度，包括在 60Hz 下每像素 30 位元的 4K。DisplayPort 輸入與 DisplayPort v1.4 相容，速度可達每通道 8.1Gbps，而 FPD-Link 介面在 FPD-Link IV 模式下支援每通道最高 13.5Gbps，或在 FPD-Link III 模式下支援每通道最高 3.675Gbps。DS90Ux983-Q1EVM 的 FPD-Link 互連是一款車用 Rosenberger (...)

要求
開發板

DS90UB983-Q1MEVM — DS90UB983-Q1 DisplayPort 至 FPD-Link IV 橋接串聯器評估模組

DS90Ux983-Q1MEVM 是用於評估 DS90Ux983-Q1 DisplayPort 至 FPD-Link IV 串聯器的評估模組。DS90Ux983-Q1 支援超高解析度，包括在 60Hz 下每像素 30 位元的 4K。DisplayPort 輸入與 DisplayPort v1.4 相容，速度可達每通道 8.1Gbps，而 FPD-Link 介面在 FPD-Link IV 模式下支援每通道最高 13.5Gbps，或在 FPD-Link III 模式下支援每通道最高 3.675Gbps。DS90Ux983-Q1MEVM 的 FPD-Link 互連為車用 12 路 Molex (...)

要求
開發板

LMS3635MQEVM — LMS3635-Q1 3.5A、5V 同步 400 kHz 降壓轉換器評估模組

The LMS3635MQEVM evaluation module (EVM) demonstrates the capabilities of the LMS3635-Q1 automotive integrated buck converter. For optimized EMI performance, the LMS3635-Q1 has Spread Spectrum built in and the  EVM has an EMI filter on the back side that assists with noise reduction. The user (...)
使用指南: PDF
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模擬型號

LMS36353-Q1 PSpice Transient Model

SNAM212.ZIP (106 KB) - PSpice Model
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模擬型號

LMS36353-Q1 Unencrypted PSpice Transient Model

SNAM211.ZIP (8 KB) - PSpice Model
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模擬型號

LMS36355-Q1 PSpice Transient Model

SNAM209.ZIP (122 KB) - PSpice Model
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模擬型號

LMS36355-Q1 Unencrypted PSpice Transient Model

SNAM210.ZIP (8 KB) - PSpice Model
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模擬型號

LMS3635A-Q1 PSpice Transient Model

SNAM208.ZIP (123 KB) - PSpice Model
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模擬型號

LMS3635A-Q1 Unencrypted PSpice Transient Model

SNAM207.ZIP (7 KB) - PSpice Model
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參考設計

TIDA-01056 — 最小化 EMI 的同時最佳化電源供應效率的 20 位元 1MSPS DAQ 參考設計

This reference design for high performance data acquisition (DAQ) systems optimizes power stage in order to reduce power consumption and minimize the effect of EMI from switching regulator by using LMS3635-Q1 buck converter.  This reference designs yields 7.2% efficiency improvement at most (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01432 — 具有充電和強化資料路徑性能的車用被動式媒體中心參考設計

This automotive reference design demonstrates a unique approach for media ports that require data transfers. This design has the capability to support USB 2.0 through a 15-W USB Type-C™ port. Customers can accelerate their media port systems by taking advantage of a complete reference design (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01057 — 將真正 10Vpp 差分輸入的訊號動態範圍最大化至 20 位元 ADC 的參考設計

This reference design is designed for high performance data acquisition(DAQ) systems to improve the dynamic range of 20 bit differential input ADCs. Many DAQ systems require the measurement capability at a wide FSR (Full Scale Range) in order to obtain sufficient signal dynamic range. Many earlier (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP20807 — 精巧型 27W USB Type C 電力輸送參考設計

The PMP20807 reference design is a USB Type C power delivery solution configurable for 5V or 9V output. This compact reference design has a total solution size of 44mm x 18mm x 7.8mm. The low quiescent current capability of LMS3635A and TPS25740A  minimizes the amount of necessary input (...)
Test report: PDF
電路圖: PDF
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