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DC/DC 轉換器

LMR36520

現行

具有 26uA IQ 的 SIMPLE SWITCHER® 4.2V 至 65V、2A 同步降壓轉換器

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產品規格表

LMR36520

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck, Flybuck Iout (max) (A) 2 Vin (max) (V) 65 Vin (min) (V) 4.2 Vout (max) (V) 62 Vout (min) (V) 1 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, UVLO Fixed Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000026 Duty cycle (max) (%) 98 Sector Robotics, Test & measurement
Rating Catalog Topology Buck, Flybuck Iout (max) (A) 2 Vin (max) (V) 65 Vin (min) (V) 4.2 Vout (max) (V) 62 Vout (min) (V) 1 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, UVLO Fixed Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000026 Duty cycle (max) (%) 98 Sector Robotics, Test & measurement
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • Designed for reliable and rugged applications
    • Input transient protection up to 70V
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
  • Well-designed for scalable industrial power supplies
  • Wide conversion range
    • Input voltage range: 4.2V to 65V
    • Output voltage range: 1V to 95% of VIN
  • Low-power dissipation across load spectrum
    • 90% efficiency: 24 VIN, 5 VOUT, 1A at 400kHz
    • Increased light-load efficiency in PFM mode
    • Low operating quiescent current of 26µA
  • Power-good output with filter and delayed release
  • Designed for reliable and rugged applications
    • Input transient protection up to 70V
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
  • Well-designed for scalable industrial power supplies
  • Wide conversion range
    • Input voltage range: 4.2V to 65V
    • Output voltage range: 1V to 95% of VIN
  • Low-power dissipation across load spectrum
    • 90% efficiency: 24 VIN, 5 VOUT, 1A at 400kHz
    • Increased light-load efficiency in PFM mode
    • Low operating quiescent current of 26µA
  • Power-good output with filter and delayed release

The LMR36520 regulator is an easy-to-use, synchronous, step-down DC/DC SIMPLE SWITCHER power converter. With integrated high-side and low-side power MOSFETs, output current up to 2A is delivered over a wide input voltage range of 4.2V to 65V. The transient tolerance that goes up to 70V reduces the design size and cost to protect against overvoltages and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36520 uses peak-current mode control to provide excellent efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the requirement for an external supervisor.

Integration and internal compensation eliminates many external components and provides a pinout designed for a simple PCB layout. The feature set of the device is designed to simplify implementation for a wide range of end equipment. The LMR36520 is pin-to-pin compatible with the LMR36510 (65V, 1A) and LMR33610, LMR33620, LMR33630, and LMR33640 (36V, 1A, 2A, 3A, 4A), completing the latest family of SIMPLE SWITCHER power converters. This compatibility increases the ease of use and scalability of wide Vin converters across various commonly used voltage and current ratings without having the need to redesign the board layout. As a result, the overall cost, design effort and time to market are optimized.

The LMR36520 is in an 8-pin HSOIC package.

The LMR36520 regulator is an easy-to-use, synchronous, step-down DC/DC SIMPLE SWITCHER power converter. With integrated high-side and low-side power MOSFETs, output current up to 2A is delivered over a wide input voltage range of 4.2V to 65V. The transient tolerance that goes up to 70V reduces the design size and cost to protect against overvoltages and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36520 uses peak-current mode control to provide excellent efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the requirement for an external supervisor.

Integration and internal compensation eliminates many external components and provides a pinout designed for a simple PCB layout. The feature set of the device is designed to simplify implementation for a wide range of end equipment. The LMR36520 is pin-to-pin compatible with the LMR36510 (65V, 1A) and LMR33610, LMR33620, LMR33630, and LMR33640 (36V, 1A, 2A, 3A, 4A), completing the latest family of SIMPLE SWITCHER power converters. This compatibility increases the ease of use and scalability of wide Vin converters across various commonly used voltage and current ratings without having the need to redesign the board layout. As a result, the overall cost, design effort and time to market are optimized.

The LMR36520 is in an 8-pin HSOIC package.

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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 LMR36520SIMPLE SWITCHER 4.2V to 65V, 2A Synchronous Step-Down Converter datasheet (Rev. C) PDF | HTML 2025/11/6
設計指南 High-Efficiency 24-VAC to 5-V, 3.3-V Ref Design With Battery Backup and Charging PDF | HTML 2023/6/30
應用說明 Designing an Isolated Buck (Fly-BuckTM) Converter using the LMR36520 (Rev. A) PDF | HTML 2022/7/19
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
證書 LMR36520AEVM EU Declaration of Conformity (DoC) 2020/5/6
技術文章 3 tips when designing a power stage for servo and AC drives PDF | HTML 2019/11/20
技術文章 How to increase system reliability and simplify design using DC/DC converters PDF | HTML 2016/6/13

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

LMR36520AEVM — 具有 26-uA IQ 的 SIMPLE SWITCHER® 4.2-V 至 65-V、2-A 同步降壓轉換器評估模組

LMR36520AEVM 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估 LMR36520 同步降壓轉換器。

使用指南: PDF
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模擬型號

LMR36520A PSpice Unencrypted Transient Model (Rev. A)

SNVMBX7A.ZIP (185 KB) - PSpice 模型
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模擬型號

LMR36520FA PSpice Unencrypted Transient Model (Rev. A)

SNVMBX8A.ZIP (188 KB) - PSpice 模型
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參考設計

PMP22822 — 2.2-W 多輸出返馳參考設計

此參考設計為適用隔離式閘極驅動偏壓電源的 2.2-W 多輸出返馳解決方案。電源設計可接受來自 24-V 系統的輸入。此設計使用 LM36520 同步降壓轉換器來產生四個隔離輸出。一次側穩壓可將四個 17-V 輸出維持在 +/-10% 範圍內。
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參考設計

TIDA-010052 — 適用於馬達驅動的安全電源供應參考設計

此參考設計採用安全電源供應器，可為搭載兩個 MCU 的架構中的微控制器供電。此設計具備數種保護功能，包括過電壓保護和短路保護，可防止 MCU 受損。DC/DC、LMR36515 及 LMR36015 將 5-V 及 12-V 軌轉換為 3.3 V，並分別由 TPS3703 及 TPS3702 電壓監控器監控。

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參考設計

TIDA-010932 — 具有電池備援的 24-VAC 功率級參考設計

此參考設計專門針對使用 24 VAC 電源的智慧空調與其它閘道建築自動化終端設備，提供高效率的功率級解決方案。此功率級採用 24-VAC 輸入，並產生 5 V 與 3.3 V 輸出軌，可在新增時為額外的負載點轉換器供電。此設計提供 LiPo 電池充電，並在供電不足時無縫切換至電池電源。BoosterPack 外型尺寸允許設計人員利用其它 launchpad 評估此電源架構，並且包含 LED 驅動器和電流感測功能。

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