供应双路同步降压控制器TPS51123RGE

地区:广东 深圳
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深圳市广辉电子有限公司

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双路同步降压控制器,具有 Out-of-Audio 操作和用于笔记本电脑系统的 100mA LDO Pwr

说明

The TPS51123 is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The TPS51123 supports high efficiency, fast transient responses and provides a combined power-good signal. Out-of-Audio mode light-load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP control provides convenient and efficient operation. The part operates with supply input voltages ranging from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51123 is available in a 24-pin QFN package and is specified from -40°C to 85°C ambient temperature range.

特性

  • Wide-Input Voltage Range: 5.5 V to 28 V
  • Output Voltage Range: 2 V to 5.5 V
  • Built-in 100-mA 5-V/3.3-V LDO with Switches
  • Built-in 1% 2-V Reference Output
  • With/Without Out-of-Audio™ Mode Selectable
    Light-Load and PWM only Operation
  • Internal 1.6-ms Voltage Servo Softstart
  • Adaptive On-Time Control Architecture with Four
    Selectable Frequency Setting
  • 4500 ppm/°C RDS(on) Current Sensing
  • Built-In Output Discharge
  • Power Good Output
  • Built-in OVP/UVP/OCP
  • Thermal Shutdown (Non-latch)
  • 24-Pin QFN (RGE) Package
  • APPLICATIONS
    • Notebook Computers
    • I/O Supplies
    • System Power Supplies

Out-of-Audio, D-CAP are trademarks of Texas Instruments

参数

  TPS51120  TPS51123 TPS51124  TPS51125A  TPS51220  TPS51220A 
Topology Buck,D-CAP™ Mode   Buck,D-CAP™ Mode   Buck,D-CAP™ Mode   Buck,D-CAP™ Mode   Buck,D-CAP™ Mode   Buck,D-CAP™ Mode  
Vin(Min)(V) 4.5   5.5   3   5.5   4.5   4.5  
Vin(Max)(V) 28   28   28   28   28   32  
Vout(Min)(V) 1.05   2.0   0.76   2   1   1  
Vout(Max)(V) 5.5   5.5   5.5   5.5   12   12  
Regulated Outputs(#) 2   2   2   2   2   2  
Iout(Max)(A) 20   20   15   20   20   20  
Switching Frequency(Max)(kHz) 580   460   420   460   1000   1000  
Iq(Typ)(mA) 0.75   0.55   0.35   0.55   1.3   1.3  
Pin/Package 32QFN   24VQFN   24VQFN   24VQFN   32QFN   32QFN  
Thermal Shutdown Yes   Yes   Yes   Yes   Yes   Yes  
Vout2(Min)(V) 1.05   2.0   0.76   2   1   1  
Vout2(Max)(V) 5.5   5.5   5.5   5.5   12   12  
Iout2(A) 20   20   20   20   20   20  
Rating Catalog   Catalog   Catalog   Catalog   Catalog   Catalog  
Duty Cycle(Max)(%) 88   93   88   93   99   99  

型号/规格

TPS51123RGER,TPS51123RGE,TPS51123,51123

品牌/商标

TI