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DC/DC 切換穩壓器
DC/DC 轉換器

LM76002

現行

3.5V 至 60V、2.5A 同步降壓電壓轉換器

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產品規格表

LM76002

現行
立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 60 Vin (min) (V) 3.5 Vout (max) (V) 57 Vout (min) (V) 1 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, Wettable flanks package Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 60 Vin (min) (V) 3.5 Vout (max) (V) 57 Vout (min) (V) 1 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, Wettable flanks package Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015 Duty cycle (max) (%) 98
WQFN (RNP) 30 24 mm² (6 mm × 4 mm)
  • Integrated synchronous rectification
  • Input voltage 3.5 V to 60 V (65 V maximum)
  • Output current:
    • LM76002: 2.5 A
    • LM76003: 3.5 A
  • Output voltage 1 V to 95% VIN
  • 15-µA Quiescent current in regulation
  • Wide voltage conversion range
    • tON-MIN = 65 ns (typical)
    • tOFF-MIN = 95 ns (typical)
  • System-level features
    • Synchronization to external clock
    • Power-good flag
    • Precision enable
    • Adjustable soft-start (6.3 ms default)
    • Voltage tracking capability
  • Pin-selectable FPWM operation
  • Adjustable frequency range: 300 kHz to 2.2 MHz
  • High-efficiency at light-load architecture (PFM)
  • Protection features
    • Cycle-by-cycle current limit
    • Short-circuit protection with hiccup mode
    • Overtemperature thermal shutdown protection
  • Create a custom design using the LM76002/LM76003 with the WEBENCH® Power Designer
  • Integrated synchronous rectification
  • Input voltage 3.5 V to 60 V (65 V maximum)
  • Output current:
    • LM76002: 2.5 A
    • LM76003: 3.5 A
  • Output voltage 1 V to 95% VIN
  • 15-µA Quiescent current in regulation
  • Wide voltage conversion range
    • tON-MIN = 65 ns (typical)
    • tOFF-MIN = 95 ns (typical)
  • System-level features
    • Synchronization to external clock
    • Power-good flag
    • Precision enable
    • Adjustable soft-start (6.3 ms default)
    • Voltage tracking capability
  • Pin-selectable FPWM operation
  • Adjustable frequency range: 300 kHz to 2.2 MHz
  • High-efficiency at light-load architecture (PFM)
  • Protection features
    • Cycle-by-cycle current limit
    • Short-circuit protection with hiccup mode
    • Overtemperature thermal shutdown protection
  • Create a custom design using the LM76002/LM76003 with the WEBENCH® Power Designer

The LM76002/LM76003 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 2.5 A (LM76002) or 3.5 A (LM76003) of load current from an input up to 60 V. The LM76002/LM76003 provides exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization, FPWM option, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load and optional external bias improve efficiency. This device requires few external components and has a pinout designed for simple PCB layout with best-in-class EMI (CISPR22) and thermal performance. Protection features include input undervoltage lockout, thermal shutdown, cycle-by-cycle current limit, and short-circuit protection. The LM76002/LM76003 device is available in the WQFN 30-pin leadless package with wettable flanks.

The LM76002/LM76003 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 2.5 A (LM76002) or 3.5 A (LM76003) of load current from an input up to 60 V. The LM76002/LM76003 provides exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization, FPWM option, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load and optional external bias improve efficiency. This device requires few external components and has a pinout designed for simple PCB layout with best-in-class EMI (CISPR22) and thermal performance. Protection features include input undervoltage lockout, thermal shutdown, cycle-by-cycle current limit, and short-circuit protection. The LM76002/LM76003 device is available in the WQFN 30-pin leadless package with wettable flanks.
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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 LM76002/LM76003 3.5-V to 60-V, 2.5-A/3.5-A Synchronous Step-Down Voltage Regulator datasheet (Rev. A) PDF | HTML 2019/9/5
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
技術文章 Top three qualities to consider when designing a video doorbell power supply PDF | HTML 2018/9/25
技術文章 Effects of IC package on EMI performance PDF | HTML 2018/5/22
應用說明 AN-2218 Precision Current Limiting with the LMP8646 and LM3102 (Rev. A) 2013/4/23
應用說明 Creating GSM Power Supply from TPS54260 2010/4/30

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

LM76002EVM-500K — LM76002 3.5V 至 60V、2.5A 同步降壓轉換器評估模組

LM76002EVM-500K 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估 LM76002 同步降壓轉換器。此 EVM 可在 3.5V 至 60V 輸入之間運作，並在 2.5A 時提供 3.3V 或 5V 輸出。
使用指南: PDF
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模擬型號

LM76002 Non-Inverting and Inverting PSpice Transient Model (Rev. A)

SNVMBE8A.ZIP (297 KB) - PSpice 模型
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模擬型號

TINA-TI Enable Hysteresis Schematic

SNVMBL7.ZIP (4 KB) - TINA-TI 參考設計
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參考設計

TIDA-010055 — 非隔離電源架構，具有用於保護繼電器模組的診斷參考設計

此參考設計展示適用保護繼電器的非隔離式電源供應架構，具備由 5-、12- 或 24-V DC輸入所產生的類比輸入/輸出和通訊模組。為了產生電源供應，此設計使用配備整合式 FET 的 DC/DC 轉換器、配備整合式電感器的電源模組以適用於尺寸和設計時間受限的應用、一款 HotRod™ 封裝類型以利需要低 EMI 和低漣波線性穩壓器 (LDO) 之應用。保護包括用於輸入瞬態保護的平壓箝 TVS、用於過載保護的可配置負載電流，以及用於輸入反接保護的理想二極體控制器。其他功能包括自動切換電源多工器、類比溫度感測器、輸入正常指示、「無負載」偵測以及和電壓監控器。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (RNP) 30 Ultra Librarian
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