LMR33640

現行

採用 SOIC-8 封裝的 SIMPLE SWITCHER® 3.8V 至 36V、4A 降壓轉換器

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3.8 Vin (max) (V) 36 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 1000 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 24 Iq (typ) (µA) 24 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3.8 Vin (max) (V) 36 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 1000 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 24 Iq (typ) (µA) 24 Duty cycle (max) (%) 98
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • Input voltage range: 3.8 V to 36 V
    • Output voltage range: 1 V to 24 V
    • Peak-current mode control
    • Junction temperature range: –40°C to +125°C
    • Ease-of-use SOIC package
  • Well-suited for scalable industrial power supplies
    • Pin compatible with:
    • 400-kHz and 1-MHz frequency
    • Integrated compensation helps reduce solution size, cost, and design complexity
  • High-efficiency solution
    • Peak efficiency > 95%
    • Low shutdown quiescent current of 5 µA
    • Low operating quiescent current of 24 µA
  • Flexible system interface
    • Power-good flag and precision enable
  • Create a custom design using the LMR33640 with the WEBENCH Power Designer
  • Use TPSM53604 module for faster time to market
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • Input voltage range: 3.8 V to 36 V
    • Output voltage range: 1 V to 24 V
    • Peak-current mode control
    • Junction temperature range: –40°C to +125°C
    • Ease-of-use SOIC package
  • Well-suited for scalable industrial power supplies
    • Pin compatible with:
    • 400-kHz and 1-MHz frequency
    • Integrated compensation helps reduce solution size, cost, and design complexity
  • High-efficiency solution
    • Peak efficiency > 95%
    • Low shutdown quiescent current of 5 µA
    • Low operating quiescent current of 24 µA
  • Flexible system interface
    • Power-good flag and precision enable
  • Create a custom design using the LMR33640 with the WEBENCH Power Designer
  • Use TPSM53604 module for faster time to market

The LMR33640 SIMPLE SWITCHER regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33640 drives up to 4 A of load current from an input of up to 36 V. The LMR33640 provides high light-load efficiency and output accuracy. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR33640 automatically folds back frequency at light load to improve efficiency. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. 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 LMR33640 is pin-to-pin compatible with the LMR33610, LMR33620, LMR33630 (36 V, 1 A/2, A/3 A), LMR36510 (65 V, 1 A), and LMR36520 (65 V, 2 A), completing the family of scalable SIMPLE SWITCHER power supplies. This minimizes the cost and effort associated with board layout modifications. The LMR33640 is available in an 8-pin HSOIC package.

The LMR33640 SIMPLE SWITCHER regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33640 drives up to 4 A of load current from an input of up to 36 V. The LMR33640 provides high light-load efficiency and output accuracy. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR33640 automatically folds back frequency at light load to improve efficiency. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. 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 LMR33640 is pin-to-pin compatible with the LMR33610, LMR33620, LMR33630 (36 V, 1 A/2, A/3 A), LMR36510 (65 V, 1 A), and LMR36520 (65 V, 2 A), completing the family of scalable SIMPLE SWITCHER power supplies. This minimizes the cost and effort associated with board layout modifications. The LMR33640 is available in an 8-pin HSOIC package.

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TPSM63604 現行 36-V 輸入、16-V 輸出、4-A 同步降壓 DC-DC 電源模組 Save board space, simplify design, and speed up time to market with an integrated-inductor power module.

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類型 標題 日期
* Data sheet LMR33640 SIMPLE SWITCHER 3.8-V to 36-V, 4-A Synchronous Step-down Converter datasheet (Rev. C) PDF | HTML 2020年 11月 24日
Functional safety information LMR336x0 Functional Safety, FIT Rate, FMD and Pin FMA (Rev. B) PDF | HTML 2024年 3月 20日
Application note Working with Inverting Buck-Boost Converters (Rev. B) PDF | HTML 2022年 10月 18日
Technical article 3 tips when designing a power stage for servo and AC drives PDF | HTML 2019年 11月 20日
EVM User's guide LMR33640EVM User's Guide 2019年 11月 1日
Technical article How to increase system reliability and simplify design using DC/DC converters PDF | HTML 2016年 6月 13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

LMR33640EVM — 3.8-V 至 36-V、4-A 降壓轉換器評估模組

The LMR33640 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR33640ADDA synchronous step-down converer.
使用指南: PDF
TI.com 無法提供
模擬型號

LMR33640A PSpice Unencrypted Transient Model

SNVMBV0.ZIP (175 KB) - PSpice Model
模擬型號

LMR33640D PSpice Unencrypted Transient Model

SNVMBV1.ZIP (172 KB) - PSpice Model
計算工具

SNVR484 LMR336x0 Component Calculator

支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
LMR33620 具超低 EMI 的 SIMPLE SWITCHER® 3.8V 至 36V、2A 同步降壓轉換器 LMR33620-Q1 3.8-V 至 36-V、2-A 同步降壓轉換器 LMR33630 具有超低 EMI 的 SIMPLE SWITCHER® 3.8V 至 36V、3A 同步降壓轉換器 LMR33630-Q1 3.8V 至 36V、3A 同步降壓轉換器 LMR33640 採用 SOIC-8 封裝的 SIMPLE SWITCHER® 3.8V 至 36V、4A 降壓轉換器 LMR36015 4.2V 至 60V、1.5A、超小型同步降壓轉換器 LMR36015-Q1 4.2V 至 60V、1.5A、超小型同步降壓轉換器
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HSOIC (DDA) 8 Ultra Librarian

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內含資訊:
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  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
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