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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM76003

現行

3.5V 至 60V、3.5A 同步降壓電壓轉換器

立即訂購
產品規格表

LM76003

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3.5 Vin (min) (V) 3.5 Vin (max) (V) 60 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2200 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 Vout (min) (V) 1 Vout (max) (V) 57 Iq (typ) (µA) 15 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3.5 Vin (min) (V) 3.5 Vin (max) (V) 60 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2200 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 Vout (min) (V) 1 Vout (max) (V) 57 Iq (typ) (µA) 15 Duty cycle (max) (%) 98
WQFN (RNP) 30 24 mm² 6 x 4
  • 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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類型 標題 日期
* Data sheet 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年 9月 5日
Application note Using Half-Bridge Gate Driver to Achieve 100% Duty Cycle for High Side FET PDF | HTML 2024年 3月 25日
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 2021年 7月 26日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Technical article Top three qualities to consider when designing a video doorbell power supply PDF | HTML 2018年 9月 25日
Technical article Effects of IC package on EMI performance PDF | HTML 2018年 5月 22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

LM76003EVM-500K — LM76003 3.5V 至 60V、3.5A 同步降壓轉換器評估模組

The LM76003EVM-500K evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM76003 synchronous step-down converter. The EVM operates from an 3.5V to 60V input and provides a 3.3V or 5V output at 3.5A.
使用指南: PDF
TI.com 無法提供
模擬型號

LM76003 Non-Inverting and Inverting PSpice Transient Model (Rev. A)

SNVMBE9A.ZIP (297 KB) - PSpice Model
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模擬型號

LM76003 Unencrypted Pspice Non-Inverting and Inverting Transient Model (Rev. A)

SNVMBF3A.ZIP (9 KB) - PSpice Model
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模擬型號

TINA-TI Enable Hysteresis Schematic

SNVMBL7.ZIP (4 KB) - TINA-TI Reference Design
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Gerber 檔案

DC/DC Converter Enable Hysteresis Calculator

SNVC227.ZIP (40 KB)
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參考設計

TIDA-01606 — 10-kW、雙向三相三級 (T 型) 逆變器和 PFC 參考設計

This verified reference design provides an overview on how to implement a three-level three-phase SiC based DC:AC T-type inverter stage. Higher switching frequency of 50KHz reduces the size of magnetics for the filter design and enables higher power density. The use of SiC MOSFETs with switching (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010076 — 菊輪鍊電力和數據透過單對乙太網路 (T1) 輸送的參考設計

The TIDA-010076 shows the transfer of 220-W power and 100-Mbit/s data over SPE. Communication systems in daisy-chain topology need significantly less hardware and wiring than conventional systems in star-topology. When combined with single-pair Ethernet (SPE, 100BASE-T1) and power over data line, (...)
Design guide: PDF
電路圖: PDF
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

This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP15026 — 具有可變輸出電壓的反相降壓-升壓轉換器參考設計

This reference design uses the 60V, 3.5A LM76003 synchronous buck converter in an inverting buck-boost configuration to generate a variable negative output voltage. Dynamic variation of the output voltage allows use in applications requiring different output voltages without having to make (...)
Test report: PDF
電路圖: PDF
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