首頁 電源管理 DC/DC 切換穩壓器 DC/DC 轉換器
首頁
電源管理
DC/DC 切換穩壓器
DC/DC 轉換器

LMR51420

現行

具有 4.5V 至 36V、2A、同步降壓和 40µA IQ 的 SIMPLE SWITCHER® 電源轉換器

立即訂購
產品規格表

LMR51420

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 36 Vin (min) (V) 4.5 Vout (max) (V) 34.2 Vout (min) (V) 0.6 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Synchronous Rectification Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable Sector Robotics, Test & measurement
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 36 Vin (min) (V) 4.5 Vout (max) (V) 34.2 Vout (min) (V) 0.6 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Synchronous Rectification Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable Sector Robotics, Test & measurement
SOT-23-THN (DDC) 6 8.12 mm² (2.9 mm × 2.8 mm)
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • 4.5-V to 36-V input voltage range
    • 2-A continuous output current
    • 70-ns minimum switching on time
    • 500-kHz and 1.1-MHz fixed switching frequency options
    • –40°C to 150°C junction temperature range
    • 98% maximum duty cycle
    • Start-up with prebiased output
    • Internal short circuit protection with hiccup mode
    • ±1.5% tolerance voltage reference
    • Precision enable
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT-23 package
  • Pin-to-pin compatible with the TPS54202 and TPS54302
  • PFM and forced PWM (FPWM) options available
  • Create a custom design using the LMR51420 with the WEBENCH Power Designer
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • 4.5-V to 36-V input voltage range
    • 2-A continuous output current
    • 70-ns minimum switching on time
    • 500-kHz and 1.1-MHz fixed switching frequency options
    • –40°C to 150°C junction temperature range
    • 98% maximum duty cycle
    • Start-up with prebiased output
    • Internal short circuit protection with hiccup mode
    • ±1.5% tolerance voltage reference
    • Precision enable
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT-23 package
  • Pin-to-pin compatible with the TPS54202 and TPS54302
  • PFM and forced PWM (FPWM) options available
  • Create a custom design using the LMR51420 with the WEBENCH Power Designer

The LMR51420 is a wide-VIN, easy-to-use SIMPLE SWITCHER power converter synchronous buck converter capable of driving up to 2-A load current. With a wide input range of 4.5 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51420 operates at 500-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. The device has a PFM version to realize high efficiency at light load and FPWM version to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR51420 is available in a 6-pin SOT-23 package.

The LMR51420 is a wide-VIN, easy-to-use SIMPLE SWITCHER power converter synchronous buck converter capable of driving up to 2-A load current. With a wide input range of 4.5 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51420 operates at 500-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. The device has a PFM version to realize high efficiency at light load and FPWM version to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR51420 is available in a 6-pin SOT-23 package.
filter 尋找其它 DC/DC 轉換器
下載 觀看有字幕稿的影片 影片

技術文件

找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 2
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 LMR51420 SIMPLE SWITCHER® Power Converter 4.5-V to 36-V, 2-A, Synchronous Buck datasheet (Rev. C) PDF | HTML 2022/11/23
功能安全資訊 LMR514x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2021/10/15

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

LMR51420EVM — LMR51420 評估模組 4.5-V 至 36-V、2-A 同步降壓轉換器

LMR51420EVM 是完全組裝且經過測試的電路，可用於評估 LMR51420 降壓轉換器。基板將設為 5-V Vout。基板也具備用於環路量測的 AC 訊號注入端子。
使用指南: PDF | HTML
支援產品和硬體
有庫存
限制：
??asset.out-of-stock-ti_zh_TW??
無法提供
模擬型號

LM51420X PSpice Transient Model

SLUM848.ZIP (358 KB) - PSpice 模型
支援產品和硬體
模擬型號

LMR51420XF PSpice Transient Model

SLUM825.ZIP (288 KB) - PSpice 模型
支援產品和硬體
參考設計

PMP41037 — 具有 GaN 和 C2000 的 1kW、800V 至 12V 序列半橋雙向 DCX 參考設計

此參考設計為 1kW 雙向 DC 變壓器 (DCX)，可以隔離方式將 800V DC 匯流排轉換至 12V。此設計由 F280039C 控制，並持續以諧振腔的諧振頻率運作。一次側使用 LMG3622 GaN 序列半橋來處理最高 900V 的 DC 電壓。序列半橋 (SHB) 可修改為全橋，並將高壓側從 800V 變更為 400V。序列半橋可實現各種 PWM 策略，並且可控制彈性。
支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23-THN (DDC) 6 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片