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LTC3890HGN-1#PBF

  • 描述:输出类别: 晶体管驱动器 拓扑结构: 美元 输出配置: 阳性的 开关频率: 105千赫兹~835千赫兹、350千赫兹~535千赫兹 供应商设备包装: 28-SSOP
  • 品牌: 模拟器件公司 (Analog)
  • 交期:5-7 工作日
渠道:
  • 自营
  • 得捷
  • 贸泽

起订量: 1

数量 单价 合计
1+ 93.21612 93.21612
10+ 85.64729 856.47293
25+ 82.09392 2052.34815
100+ 72.33266 7233.26690
250+ 69.07553 17268.88425
  • 库存: 0
  • 单价: ¥93.21612
  • 数量:
    - +
  • 总计: ¥93.22
在线询价

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规格参数

  • 部件状态 可供货
  • 输出类别 晶体管驱动器
  • 功能 降压
  • 输出配置 阳性的
  • 拓扑结构 美元
  • 同步整流装置 Yes
  • 串口 -
  • 安装类别 表面安装
  • 时钟同步
  • 输出数量 two
  • 制造厂商 模拟器件公司 (Analog)
  • 输出阶段 two
  • 最大占空比 99%
  • 工作温度 -40摄氏度~150摄氏度(TJ)
  • 包装/外壳 28-SSOP(0.154“,3.90毫米宽)
  • 供应商设备包装 28-SSOP
  • 控制功能特性 启用、频率控制、电源良好、软启动、跟踪
  • 开关频率 105千赫兹~835千赫兹、350千赫兹~535千赫兹
  • 电源电压 (Vcc/Vdd) 4伏~60伏

LTC3890HGN-1#PBF 产品详情

The LTC3890HGN-1 is a high performance dual step-down switching regulator DC/DC controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. Power loss and noise due to the ESR of the input capacitor are minimized by operating the two controller output stages out-of-phase.

The 50μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3890HGN-1 features a precision 0.8V reference and power good output indicators. A wide 4V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries.

Independent TRACK/SS pins for each controller ramp the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous conduction mode at light loads. For a leaded package version (28-lead Narrow SSOP), see the LTC3890-1 data sheet.

LTC3890HGN-1 LTC3890-1LTC3890-2 LTC3890-3Adjustable Current LimitLimitYes No Yes NoCLKOUT/PHASMD forMultiphase OperationYes No YesNoNumber of PGoodOutputs2 1 2 1OVP – Bottom GateCrowbarYesYesNoNoCurrent Limit FoldbackYesYes No NoLight Load Operationwhen Synced to ExternalClockForced ContinuousForced ContinuousPulse SkippingPulse SkippingSENSE Pins CommonMode RangeCommon Mode < 0.5VRequires VFB < 0.65VCommon Mode < 0.5VRequires VFB < 0.65VNot Dependant onVFB. Easy to make anon-synchronousBoost or SEPICNot Dependant onVFB. Easy to make anon-synchronousBoost or SEPICPackage 5 × 5 QFN-32SSOP-28 5 × 5 QFN-32 SSOP-28

Feature

  • Wide VIN Range: 4V to 60V (65V Abs Max)
  • Low Operating IQ: 50μA (One Channel On)
  • Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V
  • RSENSE or DCR Current Sensing
  • Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads
  • Selectable Current Limit
  • Very Low Dropout Operation: 99% Duty Cycle
  • Adjustable Output Voltage Soft-Start or Tracking
  • Power Good Output Voltage Monitors
  • Output Overvoltage Protection
  • Low Shutdown IQ : < 14μA
  • Internal LDO Powers Gate Drive from VIN or EXTVCC
  • No Current Foldback During Start-Up
  • Small Low Profile (0.75mm) 5mm × 5mm QFN Package

Applications

  • Automotive Always-On Systems
  • Battery Operated Digital Devices
  • Distributed DC Power Systems


(Picture: Pinout)


LTC3890HGN-1#PBF所属分类:DC - DC开关控制器,LTC3890HGN-1#PBF 由 模拟器件公司 (Analog) 设计生产,可通过久芯网进行购买。LTC3890HGN-1#PBF价格参考¥93.216123,你可以下载 LTC3890HGN-1#PBF中文资料、PDF数据手册、Datasheet数据手册功能说明书,可查询LTC3890HGN-1#PBF规格参数、现货库存、封装信息等信息!

模拟器件公司 (Analog)

模拟器件公司 (Analog)

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