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RT8105A

5V/12V 同步降压型 DC/DC PWM 控制器

RT8105A
New

RT8105A为内建MOSFET闸极驱动的 同步降压型 DC/DC PWM 控制器，具备5V/12V的供应电源，300kHz的恒定切换频率并采用电压模式控制。据内部补偿的反饋控制回路可大幅减少转换器的设计复杂度。RT8105A提供 致能/关闭 功能以支持电源顺序控制的设计，并提供多项的错误防护功能以保护负载。此产品并采用无损耗的低端MOSFET RDS(ON)电流感测技术与可调整的阈值以达到过电流保护机制。其它特色包含内部缓开机以及VIN侦测功能。

应用

  • Graphic Card
  • Motherboard
  • IA Equipment
  • Telecomm Equipment
  • Mid-Power DC/DC Regulator

主要规格

RT8105A
Status NRND
Recommended Alternative  RT8120E/RT8120F
Vs (typ) (V) 12;5
Vin (min) (V) 5
Vin (max) (V) 12
Vout (min) (V) 0.8
Vout (max) (V) 5
Output Adj. Method Resistor
Accuracy (+/- %) 2
Freq (typ) (kHz) 300
Iq (typ) (mA) 4
Ext Sync No
Features Force PWM;OCP;OVP;SCP;UVP;Voltage Mode Control
Package Type SOP-8

关键特性

  • 5V 至 12V 供应电压

  • 内建非交迭式N-MOSFET 驱动器

  • 300kHz 恒定切换频率

  • 内建控制回路补偿

  • 致能/关闭 控制

  • 广范围0 至 100% 占空比

  • 低端MOSFET RDS(ON)电流感测

  • 具抗噪声的可调电流感测

  • 全时序电压过高保护

  • 快速瞬时响应

  • 内建缓开机

  • 符合RoHS规范与无卤特性

Datasheet

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Datasheet

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