LM5005

現行

7-75V 大範圍 Vin、2.5A 電流模式非同步降壓穩壓器

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2.5 Vin (min) (V) 7 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Features Enable, Frequency synchronization, Over Current Protection Control mode current mode Vout (min) (V) 1.23 Vout (max) (V) 70 Iq (typ) (µA) 3000 Duty cycle (max) (%) 99
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2.5 Vin (min) (V) 7 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Features Enable, Frequency synchronization, Over Current Protection Control mode current mode Vout (min) (V) 1.23 Vout (max) (V) 70 Iq (typ) (µA) 3000 Duty cycle (max) (%) 99
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • High-Efficiency DC-DC Buck Converter
    • Wide Input Voltage Range From 7 V to 75 V
    • Adjustable Output Voltage as Low as 1.225 V
    • Output Current as High as 2.5 A
    • Junction Temperature Range –40°C to 125°C
  • Integrated 75-V, 160-mΩ Buck MOSFET
  • Meets EN55022 and CISPR 22 EMI Standards
  • ±1.5% Feedback Voltage Accuracy
  • Emulated Peak Current-Mode Control
    • Ultra-Fast Line and Load Transient Response
  • Switching Frequency From 50 kHz to 500 kHz
  • Master or Slave Frequency Synchronization Input
  • 80-ns Minimum PWM ON Time For Low VOUT
  • Monotonic Start-up into Prebiased Output
  • Internal High-Voltage VCC Bias Supply Regulator
  • Auxiliary Bias Supply Option to VCC
  • Configurable Soft Start With Tracking
  • Precision Standby and Shutdown Input
    • Programmable Input UVLO With Hysteresis
  • Remote Shutdown and Standby Control
  • Cycle-by-Cycle Overcurrent Protection
  • VCC and Gate Drive UVLO Protection
  • Thermal Shutdown Protection With Hysteresis
  • Thermally-Enhanced 20-Pin HTSSOP Package
  • High-Efficiency DC-DC Buck Converter
    • Wide Input Voltage Range From 7 V to 75 V
    • Adjustable Output Voltage as Low as 1.225 V
    • Output Current as High as 2.5 A
    • Junction Temperature Range –40°C to 125°C
  • Integrated 75-V, 160-mΩ Buck MOSFET
  • Meets EN55022 and CISPR 22 EMI Standards
  • ±1.5% Feedback Voltage Accuracy
  • Emulated Peak Current-Mode Control
    • Ultra-Fast Line and Load Transient Response
  • Switching Frequency From 50 kHz to 500 kHz
  • Master or Slave Frequency Synchronization Input
  • 80-ns Minimum PWM ON Time For Low VOUT
  • Monotonic Start-up into Prebiased Output
  • Internal High-Voltage VCC Bias Supply Regulator
  • Auxiliary Bias Supply Option to VCC
  • Configurable Soft Start With Tracking
  • Precision Standby and Shutdown Input
    • Programmable Input UVLO With Hysteresis
  • Remote Shutdown and Standby Control
  • Cycle-by-Cycle Overcurrent Protection
  • VCC and Gate Drive UVLO Protection
  • Thermal Shutdown Protection With Hysteresis
  • Thermally-Enhanced 20-Pin HTSSOP Package

The LM5005 high-voltage buck converter features all of the functions necessary to implement an efficient high-voltage switching regulator with a minimum number of external components. This easy-to-use converter operates over an input voltage range from 7 V to 75 V and delivers a maximum output current of 2.5 A. The control loop architecture is based upon current-mode control using an emulated current ramp for high noise immunity. Current-mode control provides inherent line feed-forward, cycle-by-cycle overcurrent protection and straightforward loop compensation. The use of an emulated control ramp reduces noise sensitivity of the PWM circuit, allowing reliable control of small duty cycles necessary in high input voltage applications.

The switching frequency is resistor-programmable from 50 kHz to 500 kHz. To reduce EMI, an oscillator synchronization pin allows multiple LM5005 regulators to self-synchronize or be synchronized to an external clock signal. Additional protection features include configurable soft start, external power supply tracking, thermal shutdown with automatic recovery, and remote shutdown capability.

The LM5005 is available in an 20-pin HTSSOP package with an exposed pad that is soldered to the PCB to achieve a low junction-to-board thermal impedance. To create a custom regulator design, use the LM5005 with WEBENCH® Power Designer.

The LM5005 high-voltage buck converter features all of the functions necessary to implement an efficient high-voltage switching regulator with a minimum number of external components. This easy-to-use converter operates over an input voltage range from 7 V to 75 V and delivers a maximum output current of 2.5 A. The control loop architecture is based upon current-mode control using an emulated current ramp for high noise immunity. Current-mode control provides inherent line feed-forward, cycle-by-cycle overcurrent protection and straightforward loop compensation. The use of an emulated control ramp reduces noise sensitivity of the PWM circuit, allowing reliable control of small duty cycles necessary in high input voltage applications.

The switching frequency is resistor-programmable from 50 kHz to 500 kHz. To reduce EMI, an oscillator synchronization pin allows multiple LM5005 regulators to self-synchronize or be synchronized to an external clock signal. Additional protection features include configurable soft start, external power supply tracking, thermal shutdown with automatic recovery, and remote shutdown capability.

The LM5005 is available in an 20-pin HTSSOP package with an exposed pad that is soldered to the PCB to achieve a low junction-to-board thermal impedance. To create a custom regulator design, use the LM5005 with WEBENCH® Power Designer.

下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件,然後再試一次。
檢視所有 3
類型 標題 日期
* Data sheet LM5005 75-V, 2.5-A Step-Down Switching Regulator With Wide Input Voltage Range datasheet (Rev. E) PDF | HTML 2016年 11月 11日
White paper Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 2018年 7月 3日
EVM User's guide AN-1748 LM5005 Evaluation Board (Rev. A) 2013年 4月 30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

LM5005EVAL — 寬輸入電壓 2.5A 降壓穩壓器評估模組

LM5005 High Voltage 2.5 Amp Buck Regulator

使用指南: PDF
TI.com 無法提供
模擬型號

LM5005 PSpice Transient Model

SNVMAB6.ZIP (256 KB) - PSpice Model
模擬型號

LM5005 Unencrypted PSpice Transient Model

SNVMAL0.ZIP (4 KB) - PSpice Model
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTSSOP (PWP) 20 Ultra Librarian

訂購與品質

內含資訊:
  • RoHS
  • REACH
  • 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
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

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