主頁 電源管理 AC/DC 和 DC/DC 轉(zhuǎn)換器（集成 FET）

LM34919C-Q1

正在供貨

汽車類 4.5V 至 50V 寬輸入電壓、600mA、2.6MHz 超小型恒定導(dǎo)通時間非同步降壓穩(wěn)壓器

可提供此產(chǎn)品的更新版本

功能與比較器件相同，但引腳排列有所不同
TPS560430-Q1 正在供貨 汽車級 4V 至 36V 0.6A 同步降壓 SIMPLE SWITCHER? 電源轉(zhuǎn)換器 PFM and PWM selectable options in an SOT-23 package.

產(chǎn)品詳情

Rating Automotive Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 50 Vin (min) (V) 4.5 Vout (max) (V) 45 Vout (min) (V) 2.5 Features Adjustable soft start, Enable, Power good Control mode Constant on-time (COT) Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 2600 Operating temperature range (°C) -40 to 125 Iq (typ) (μA) 2200 Duty cycle (max) (%) 99 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 50 Vin (min) (V) 4.5 Vout (max) (V) 45 Vout (min) (V) 2.5 Features Adjustable soft start, Enable, Power good Control mode Constant on-time (COT) Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 2600 Operating temperature range (°C) -40 to 125 Iq (typ) (μA) 2200 Duty cycle (max) (%) 99 Type Converter
DSBGA (YZR) 12 3.9375 mm2 2.25 x 1.75 WSON (DNT) 12 16 mm2 4 x 4
  • AEC-Q100 qualified (Tj = –40°C to 125°C)
  • Maximum Switching Frequency: 2.6 MHz
  • Input Voltage Range: 4.5 V to 50 V
  • Integrated N-Channel buck switch
  • Integrated Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant with
    Load Current and Input Voltage
  • Adjustable Output Voltage
  • Power Good Output
  • Enable Input
  • Valley Current Limit at 0.64 A Typical
  • Precision Internal Voltage Reference
  • Low IQ Shutdown (<10 μA)
  • Highly Efficient Operation
  • Thermal Shutdown
  • 12-Bump 2 mm × 2 mm DSBGA and 12-pin 4
    mm × 4 mm WSON Packages
  • AEC-Q100 qualified (Tj = –40°C to 125°C)
  • Maximum Switching Frequency: 2.6 MHz
  • Input Voltage Range: 4.5 V to 50 V
  • Integrated N-Channel buck switch
  • Integrated Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant with
    Load Current and Input Voltage
  • Adjustable Output Voltage
  • Power Good Output
  • Enable Input
  • Valley Current Limit at 0.64 A Typical
  • Precision Internal Voltage Reference
  • Low IQ Shutdown (<10 μA)
  • Highly Efficient Operation
  • Thermal Shutdown
  • 12-Bump 2 mm × 2 mm DSBGA and 12-pin 4
    mm × 4 mm WSON Packages

The LM34919C Step Down Switching Regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying 0.6 A to the load. This buck regulator contains an N-Channel Buck Switch and is available in DSBGA and WSON packages. The constant on-time feedback regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include: Power Good, enable, VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.

The LM34919C Step Down Switching Regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying 0.6 A to the load. This buck regulator contains an N-Channel Buck Switch and is available in DSBGA and WSON packages. The constant on-time feedback regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include: Power Good, enable, VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.
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類型 標(biāo)題 下載最新的英語版本 日期
* 數(shù)據(jù)表 LM34919C-Q1 Ultra Small 50V, 600mA Const On-Time Buck Switchg Reg 數(shù)據(jù)表 (Rev. A) 2013年 12月 12日
用戶指南 LM34919C Evaluation Board User's Guide 2013年 9月 3日

設(shè)計和開發(fā)

如需其他信息或資源，請點擊以下任一標(biāo)題進(jìn)入詳情頁面查看（如有）。

評估板

LM34919CQSDEVM — LM34919C-Q1 50V、600mA 寬輸入電壓恒定導(dǎo)通時間降壓開關(guān)穩(wěn)壓器評估模塊

The LM34919CQSDEVM evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 3.3V output over an input range of 4.5V to 50V. The circuit delivers load currents to 600 mA, with (...)

用戶指南: PDF
TI.com 上無現(xiàn)貨
評估板

LM34919CQTLEVM — LM34919C-Q1 50V、600 mA 寬輸入電壓恒定導(dǎo)通時間降壓開關(guān)穩(wěn)壓器評估模塊

The LM34919CQTLEVM evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 3.3V output over an input range of 4.5V to 50V. The circuit delivers load currents to 600 mA, with (...)

用戶指南: PDF
TI.com 上無現(xiàn)貨
仿真模型

LM34919C-Q1 PSpice Transient Model (Rev. A)

SNVM638A.ZIP (63 KB) - PSpice Model
下載
仿真模型

LM34919C-Q1 Unencrypted PSpice Transient Model (Rev. A)

SNVM979A.ZIP (3 KB) - PSpice Model
下載
參考設(shè)計

TIDA-00223 — 車用音頻 I2S 同軸 D 類放大器的參考設(shè)計

這款基于 I2S/TDM 的參考設(shè)計是光纖/模擬銅線的低成本易用型替代品，用于將汽車（聲音）控制面板連接到輸出級/功率放大器。它既支持 I2S，也支持 TDM，能夠?qū)?shù)字音頻信號傳輸至揚聲器的 16 個獨立通道（各通道的功率輸出均為 80W/4?）。它也支持采用單一屏蔽雙絞線 (STP) 或同軸電纜通過 I2C 與控制單元或處理器進(jìn)行雙向通信。此外，TIDA-00223 參考設(shè)計附帶電源，支持快速實施，并可滿足現(xiàn)代汽車對于保護和診斷功能的所有需求。
設(shè)計指南: PDF
原理圖: PDF
參考設(shè)計

TIDA-00098 — AptinaTM 汽車攝像機模塊

此參考設(shè)計是包含 Aptina 圖像傳感器和處理器以及 TI FPD-Link III 串行器的汽車攝像頭模塊解決方案。此模塊采用來自 Aptina 的 AR0132AT 1.2Mp 圖像傳感器、 AP0101AT 圖像信號處理器 (ISP) 以及來自德州儀器 (TI) 的 LM34919C、TPS62231 降壓穩(wěn)壓器和 DS90UB913A-Q1 FPD-Link III。該組合提供緊湊的雙板汽車攝像頭解決方案。僅需一根同軸電纜進(jìn)行攝像頭數(shù)據(jù)/控制信號傳輸和輸入電源。
測試報告: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
DSBGA (YZR) 12 Ultra Librarian
WSON (DNT) 12 Ultra Librarian

訂購和質(zhì)量

包含信息：
  • RoHS
  • REACH
  • 器件標(biāo)識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測
包含信息：
  • 制造廠地點
  • 封裝廠地點

推薦產(chǎn)品可能包含與 TI 此產(chǎn)品相關(guān)的參數(shù)、評估模塊或參考設(shè)計。

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