主頁 電源管理 LED 驅(qū)動器 汽車 LED 驅(qū)動器

LM3421-Q1

正在供貨

具有串聯(lián) DIM FET 驅(qū)動器的汽車類 N 溝道恒流 LED 控制器

可提供此產(chǎn)品的更新版本

功能與比較器件相似
TPS92691-Q1 正在供貨 具有軌到軌電流感應(yīng)放大器的汽車類多拓?fù)?LED 驅(qū)動器 Multiple topology capabilities and integrated N-channel FET.

產(chǎn)品詳情

Number of channels 1 Topology Boost Controller, Buck-Boost Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 150 Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (min) (V) 3 Vout (max) (V) 72 Iout (max) (A) 5 Iq (typ) (mA) 2 Switching frequency (max) (kHz) 2000 Features Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown
Number of channels 1 Topology Boost Controller, Buck-Boost Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 150 Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (min) (V) 3 Vout (max) (V) 72 Iout (max) (A) 5 Iq (typ) (mA) 2 Switching frequency (max) (kHz) 2000 Features Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown
HTSSOP (PWP) 16 32 mm2 5 x 6.4
  • AEC Qualified for Automotive Applications
    • Device Temperature Grade 1: ?40°C ≤ TA ≤ 125°C (LM3421-Q1 and LM3423-Q1)
    • Device Temperature Grade 0: ?40°C ≤ TA ≤ 150°C (LM3421-Q0 and LM3423-Q0)
  • VIN Range From 4.5 V to 75 V
  • High-Side Adjustable Current Sense
  • 2-?, 1-A Peak MOSFET Gate Driver
  • Input Undervoltage and Output Overvoltage Protection
  • PWM and Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Zero Current Shutdown and Thermal Shutdown
  • LED Output Status Flag (LM3423-Q1 and LM3423-Q0 Only)
  • Fault Status Flag and Timer(LM3423-Q1 and LM3423-Q0 Only)
  • AEC Qualified for Automotive Applications
    • Device Temperature Grade 1: ?40°C ≤ TA ≤ 125°C (LM3421-Q1 and LM3423-Q1)
    • Device Temperature Grade 0: ?40°C ≤ TA ≤ 150°C (LM3421-Q0 and LM3423-Q0)
  • VIN Range From 4.5 V to 75 V
  • High-Side Adjustable Current Sense
  • 2-?, 1-A Peak MOSFET Gate Driver
  • Input Undervoltage and Output Overvoltage Protection
  • PWM and Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Zero Current Shutdown and Thermal Shutdown
  • LED Output Status Flag (LM3423-Q1 and LM3423-Q0 Only)
  • Fault Status Flag and Timer(LM3423-Q1 and LM3423-Q0 Only)

The LM3421-Q1 and LM3423-Q1 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421-Q1 and LM3423-Q1 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421-Q1 and LM3423-Q1 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

The LM3421-Q1 and LM3423-Q1 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421-Q1 and LM3423-Q1 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421-Q1 and LM3423-Q1 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.
下載 觀看帶字幕的視頻 視頻

您可能感興趣的相似產(chǎn)品

功能與比較器件相同，但引腳排列有所不同
TPS92692-Q1 正在供貨 具有擴頻頻率調(diào)制功能和內(nèi)部 PWM 發(fā)生器的高精度 LED 控制器 This product is a multi-topology low-side NFET LED controller with spread spectrum capability. It supports both analog and PWM dimming (with external P-FET).

技術(shù)文檔

star =有關(guān)此產(chǎn)品的 TI 精選熱門文檔
未找到結(jié)果。請清除搜索并重試。
查看全部 7
類型 標(biāo)題 下載最新的英語版本 日期
* 數(shù)據(jù)表 LM342x-Q1 N -Channel Controllers for Constant-Current LED Drivers 數(shù)據(jù)表 PDF | HTML 2019年 7月 30日
白皮書 LED Drivers for Automotive Exterior Applications (Rev. B) 2018年 3月 27日
應(yīng)用手冊 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日
EVM 用戶指南 LM3421 SEPIC LED Driver Evaluation Board for Automotive Applications (Rev. B) 2013年 5月 3日
EVM 用戶指南 AN-1907 LM3423 Buck-Boost Configuration Evaluation Board (Rev. A) 2013年 5月 1日
應(yīng)用手冊 AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 2013年 4月 23日
應(yīng)用手冊 Application Note 1656 Design Challenges of Switching LED Drivers (cn) 最新英語版本 (Rev.A) 2007年 10月 18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)題進入詳情頁面查看（如有）。

仿真模型

LM3421 PSpice Transient Model (Rev. B)

SNVMAB4B.ZIP (132 KB) - PSpice Model
下載
仿真模型

LM3421 TINA-TI Startup Reference Design

SNVMAS0.TSC (891 KB) - TINA-TI Reference Design
下載
仿真模型

LM3421 TINA-TI Steady Reference Design

SNVMAR9.TSC (895 KB) - TINA-TI Reference Design
下載
仿真模型

LM3421 TINA-TI Transient Spice Model

SNVMAS1.ZIP (25 KB) - TINA-TI Spice Model
下載
模擬工具

PSPICE-FOR-TI — PSpice? for TI 設(shè)計和仿真工具

PSpice? for TI 可提供幫助評估模擬電路功能的設(shè)計和仿真環(huán)境。此功能齊全的設(shè)計和仿真套件使用 Cadence? 的模擬分析引擎。PSpice for TI 可免費使用，包括業(yè)內(nèi)超大的模型庫之一，涵蓋我們的模擬和電源產(chǎn)品系列以及精選的模擬行為模型。

借助?PSpice for TI 的設(shè)計和仿真環(huán)境及其內(nèi)置的模型庫，您可對復(fù)雜的混合信號設(shè)計進行仿真。創(chuàng)建完整的終端設(shè)備設(shè)計和原型解決方案，然后再進行布局和制造，可縮短產(chǎn)品上市時間并降低開發(fā)成本。?

在?PSpice for TI 設(shè)計和仿真工具中，您可以搜索 TI (...)
發(fā)送申請
封裝 引腳 CAD 符號、封裝和 3D 模型
HTSSOP (PWP) 16 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

支持和培訓(xùn)

視頻