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LM3489-Q1

正在供貨

具有使能引腳的汽車(chē)級(jí) 4.5V 至 35V、滯環(huán)非同步 PFET 降壓控制器

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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(chē)級(jí) 2.2MHz 低 IQ 同步降壓控制器 Improved EMI performance, efficiency and lower IQ.

產(chǎn)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 Duty cycle (max) (%) 100 Iq (typ) (A) 0.00028 Number of phases 1 Operating temperature range (°C) -40 to 125
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 Duty cycle (max) (%) 100 Iq (typ) (A) 0.00028 Number of phases 1 Operating temperature range (°C) -40 to 125
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.
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* 數(shù)據(jù)表 LM3489x Hysteretic PFET Buck Controller With Enable Pin 數(shù)據(jù)表 (Rev. C) PDF | HTML 2016年 12月 16日
EVM 用戶(hù)指南 AN-1471 LM3489 Demonstration Board (Rev. A) 2013年 4月 25日

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評(píng)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(hù)指南: PDF
TI.com 上無(wú)現(xiàn)貨
參考設(shè)計(jì)

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設(shè)計(jì)指南: PDF
原理圖: PDF
封裝 引腳 CAD 符號(hào)、封裝和 3D 模型
VSSOP (DGK) 8 Ultra Librarian

訂購(gòu)和質(zhì)量

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

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