LM3489-Q1

正在供貨

具有使能引腳的汽車級 4.5V 至 35V、滯環非同步 PFET 降壓控制器

可提供此產品的更新版本

open-in-new 比較替代產品
功能與比較器件相同，但引腳排列有所不同
LM25141-Q1 正在供貨 具備展頻頻譜的汽車級 2.2MHz 低 IQ 同步降壓控制器 Improved EMI performance, efficiency and lower IQ.

產品詳情

Rating Automotive Topology Buck Controller Iout (max) (A) 10 Vin (max) (V) 35 Vin (min) (V) 4.5 Vout (max) (V) 35 Vout (min) (V) 1.239 Control mode Hysteretic Features Enable Operating temperature range (°C) -40 to 125 Iq (typ) (μA) 280 Duty cycle (max) (%) 100 Number of phases 1
Rating Automotive Topology Buck Controller Iout (max) (A) 10 Vin (max) (V) 35 Vin (min) (V) 4.5 Vout (max) (V) 35 Vout (min) (V) 1.239 Control mode Hysteretic Features Enable Operating temperature range (°C) -40 to 125 Iq (typ) (μA) 280 Duty cycle (max) (%) 100 Number of phases 1
VSSOP (DGK) 8 14.7 mm2 3 x 4.9
  • Qualified for Automotive Parts
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Easy-to-Use Control Methodology
  • No Control Loop Compensation Required
  • Wide 4.5-V to 35-V Input Range
  • 1.239 V to VIN Adjustable Output Range
  • High Efficiency: 93%
  • ±1.3% (±2% Over Temperature) Internal Reference
  • 100% Duty Cycle Operation
  • Maximum Operation Frequency > 1 MHz
  • Current Limit Protection
  • Dedicated Enable Pin (on if Unconnected)
  • Shutdown Mode Draws Only 7-μA Supply Current
  • 8-Pin VSSOP Package
  • Qualified for Automotive Parts
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Easy-to-Use Control Methodology
  • No Control Loop Compensation Required
  • Wide 4.5-V to 35-V Input Range
  • 1.239 V to VIN Adjustable Output Range
  • High Efficiency: 93%
  • ±1.3% (±2% Over Temperature) Internal Reference
  • 100% Duty Cycle Operation
  • Maximum Operation Frequency > 1 MHz
  • Current Limit Protection
  • Dedicated Enable Pin (on if Unconnected)
  • Shutdown Mode Draws Only 7-μA Supply Current
  • 8-Pin VSSOP Package

The LM3489 device is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost-effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated enable pin provides a shutdown mode drawing only 7 µA. Leaving the enable pin unconnected defaults to on.

Current limit protection can be implemented by measuring the voltage across the PFET’s RDS(ON), thus eliminating the need for a sense resistor. A sense resistor may be used to improve current limit accuracy if desired. The cycle-by-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.

The LM3489 device is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost-effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated enable pin provides a shutdown mode drawing only 7 µA. Leaving the enable pin unconnected defaults to on.

Current limit protection can be implemented by measuring the voltage across the PFET’s RDS(ON), thus eliminating the need for a sense resistor. A sense resistor may be used to improve current limit accuracy if desired. The cycle-by-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.
下載 觀看帶字幕的視頻 視頻

您可能感興趣的相似產品

open-in-new 比較替代產品
功能與比較器件相同，但引腳排列有所不同
LM61440-Q1 正在供貨 汽車 3V 至 36V、4A、低噪聲同步降壓轉換器 Next-generation 3-V to 36-V, 4-A, low-noise synchronous step-down converter.

技術文檔

star =有關此產品的 TI 精選熱門文檔
未找到結果。請清除搜索并重試。
查看全部 2
類型 標題 下載最新的英語版本 日期
* 數據表 LM3489x Hysteretic PFET Buck Controller With Enable Pin 數據表 (Rev. C) PDF | HTML 2016年 12月 16日
用戶指南 AN-1471 LM3489 Demonstration Board (Rev. A) 2013年 4月 25日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

評估板

LM3489EVAL — 具有使能端引腳的滯后 PFET 降壓控制器

The LM3489 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability (...)

用戶指南: PDF
TI.com 上無現貨
參考設計

TIDA-050012 — Power DUO 源 200W USB-C PD 參考設計

Power DUO 源 200W USB-C PD 參考設計是完整的 USB PD 源參考設計，支持用戶選擇他們的 USB PD 源電壓。
設計指南: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
VSSOP (DGK) 8 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 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
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

推薦產品可能包含與 TI 此產品相關的參數、評估模塊或參考設計。

支持和培訓

視頻