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LM73605

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3.5V 至 36V、5A 同步降压转换器

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功能与比较器件相同但引脚有所不同。
LM61460 正在供货 3V 至 36V、6A、低 EMI 同步降压转换器 Smaller solution size, higher efficiency and lower EMI.
TPSM63608 正在供货 采用 7.5mm x 6.5mm HotRod™ QFN 封装的高密度 36V 输入、1V 至 20V 输出、6A 电源模块 Smaller design with an integrated-inductor power module.

LM73605

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 36 Vin (min) (V) 3.5 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Fixed, Wettable flanks package Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015 Duty cycle (max) (%) 96
Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 36 Vin (min) (V) 3.5 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Fixed, Wettable flanks package Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015 Duty cycle (max) (%) 96
WQFN (RNP) 30 24 mm² (6 mm × 4 mm)
  • New product available: LM61460 60-V, 6-A synchronous converter
  • Synchronous rectification
  • Wettable flanks QFN package (WQFN)
  • Low quiescent current
    • 0.8 µA in shutdown (typical)
    • 15 µA in active mode with no load (typical)
  • Wide voltage conversion range:
    • tON-MIN = 60 ns (typical)
    • tOFF-MIN = 70 ns (typical)
  • Low MOSFET ON-resistance:
    • RDS_ON_HS = 53 mΩ (typical)
    • RDS_ON_LS = 31 mΩ (typical)
  • External bias input to improve efficiency
  • Pin-selectable auto mode or forced PWM operation
  • Adjustable frequency range: 350 kHz to 2.2 MHz
  • Synchronizable to external clock
  • Internal compensation
  • Power-good flag
  • Precision enable to program system UVLO
  • Flexible soft-start features:
    • Start-up into pre-biased load
    • Fixed or adjustable soft-start time
    • Output voltage tracking
  • Cycle-by-cycle current limiting
  • Short-circuit protection with hiccup mode
  • Create a custom design with the WEBENCH® power designer using LM73605 or LM73606
  • New product available: LM61460 60-V, 6-A synchronous converter
  • Synchronous rectification
  • Wettable flanks QFN package (WQFN)
  • Low quiescent current
    • 0.8 µA in shutdown (typical)
    • 15 µA in active mode with no load (typical)
  • Wide voltage conversion range:
    • tON-MIN = 60 ns (typical)
    • tOFF-MIN = 70 ns (typical)
  • Low MOSFET ON-resistance:
    • RDS_ON_HS = 53 mΩ (typical)
    • RDS_ON_LS = 31 mΩ (typical)
  • External bias input to improve efficiency
  • Pin-selectable auto mode or forced PWM operation
  • Adjustable frequency range: 350 kHz to 2.2 MHz
  • Synchronizable to external clock
  • Internal compensation
  • Power-good flag
  • Precision enable to program system UVLO
  • Flexible soft-start features:
    • Start-up into pre-biased load
    • Fixed or adjustable soft-start time
    • Output voltage tracking
  • Cycle-by-cycle current limiting
  • Short-circuit protection with hiccup mode
  • Create a custom design with the WEBENCH® power designer using LM73605 or LM73606

The LM73605 and LM73606 family of devices are easy-to-use synchronous step-down DC/DC converters capable of driving up to 5 A or 6 A of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605 and LM73606 provide 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 to an external clock, 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 improves efficiency over the entire load range. Protection features include thermal shutdown, cycle-by-cycle current limiting, and short-circuit protection. The devices are pin-to-pin compatible for easy current scaling. The new product, LM61460-Q1, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See the device comparison table to compare specifications. Start a Webench design with LM61460-Q1. Use the LMZM33606 module for faster time to market.

The LM73605 and LM73606 family of devices are easy-to-use synchronous step-down DC/DC converters capable of driving up to 5 A or 6 A of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605 and LM73606 provide 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 to an external clock, 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 improves efficiency over the entire load range. Protection features include thermal shutdown, cycle-by-cycle current limiting, and short-circuit protection. The devices are pin-to-pin compatible for easy current scaling. The new product, LM61460-Q1, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See the device comparison table to compare specifications. Start a Webench design with LM61460-Q1. Use the LMZM33606 module for faster time to market.
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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LM73605/LM73606 3.5-V to 36-V, 5-A or 6-A Synchronous Step-Down Voltage Converter 数据表 (Rev. A) PDF | HTML 2017-7-21
功能安全信息 LM73605 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2022-7-12
应用手册 适用于可编程逻辑控制器系统的降压转换器电源解决方案 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2021-8-12
选择指南 Buck Converter Quick Reference Guide (Rev. B) 2021-4-8
技术文章 How to add hysteresis to a DC/DC converter PDF | HTML 2018-11-12
技术文章 Effects of IC package on EMI performance PDF | HTML 2018-5-22
技术文章 Vary the output voltage in an inverting buck-boost topology PDF | HTML 2017-10-12
应用手册 Designing High Performance, Low-EMI, Automotive Power Supplies 2017-9-30

设计与开发

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评估板

LM73605EVM-5V-2MHZ — LM73605 同步降压转换器评估模块

LM73605EVM-5V-2MHZ 评估模块 (EVM) 是一个经全面封装测试的电路，用于评估 LM73605 同步降压转换器。此 EVM 在 6V 至 36V 输入电压范围内运行，且可在高达 5A 的负载电流下提供 5V 的输出电压。
用户指南: PDF
支持的产品和硬件
有库存
限制：
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无货
评估板

LM73605EVM-5V-400K — LM73605 同步降压转换器评估模块

LM73605EVM-5V-400K 评估模块 (EVM) 是一个经全面封装测试的电路，用于评估 LM73605 同步降压转换器。此 EVM 在 6V 至 36V 输入电压范围内运行，且可在高达 5A 的负载电流下提供 5V 的输出电压。

用户指南: PDF
支持的产品和硬件
有库存
限制：
??asset.out-of-stock-ti_zh_CN??
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仿真模型

LM73605 Inverting and non-inverting PSpice Transient Model

SNVMBD7.ZIP (955 KB) - PSpice 模型
支持的产品和硬件
仿真模型

LM73605 TINA-TI Transient Reference Design

SNVMBE0.TSC (2316 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

LM73605 TINA-TI Transient Spice Model

SNVMBE1.ZIP (79 KB) - TINA-TI Spice 模型
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仿真模型

LM73605 Unencrypted PSpice Transient Model

SNVJ003.ZIP (9 KB) - SPICE 模型
支持的产品和硬件
仿真模型

TINA-TI Enable Hysteresis Schematic

SNVMBL7.ZIP (4 KB) - TINA-TI 参考设计
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计算工具

SNVR524 — LM73605 Quickstart Tool

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参考设计

TIDA-010011 — 适用于保护继电器处理器模块的高效电源架构参考设计

该参考设计展示了各种电源架构，这些架构可为需要 >1A 负载电流和高效率的应用处理器模块生成多个电压轨。所需的电源通过来自背板的 5V、12V 或 24V 直流输入生成。电源通过带集成 FET 的直流/直流转换器生成并且使用带集成电感器的电源模块以减小尺寸。此设计采用 HotRod™ 封装类型，适用于需要低 EMI 的应用，也非常适合设计时间受限的应用。其他功能包括 DDR 端接稳压器、输入电源 OR-ing、电压时序控制、过载保护电子保险丝以及电压和负载电流监控。该设计可以用于处理器、数字信号处理器和现场可编程门阵列。该设计已依照 CISPR22 标准针对辐射发射进行了测试，符合 A (...)
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参考设计

TIDA-01458 — 用于超声连续波脉冲发生器的低噪声固定压差 ±2.5 至 ±12-VOUT 3A 电源参考设计

此参考设计允许数字化可编程电源通过 24V 总线为连续波 (CW) 模式的超声波发射电路供电。在用户软件控制下，有两个可调节输出（±2.5V 至 ±12V）。这些输出可提供高达 2A 且纹波和噪声极低的正负稳压器输出。通过并联更多稳压器，电源可扩展至最高 3A 输出电流。电源还可与外部时钟同步。
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
WQFN (RNP) 30 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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