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The RT8120J/K is a single-phase synchronous Buck PWM DC-DC controller designed to drive two N-MOSFET. It provides a highly accurate, adjustable output voltage precisely regulated to low voltage requirements with an internal 0.8V ±1% ( option for 0.6V ±1.5%) reference. The RT8120J/K uses a single feedback loop voltage mode PWM control for fast transient response. An oscillator with fixed frequency 300kHz reduces the external inductor and capacitor component size for saving space on PCB. The RT8120J/K provides fast transient response to satisfy high current output applications while minimizing external components. It is suitable for high performance graphic processors, DDR and VTT power. The RT8120J/K incorporates an externally compensated error amplifier and an internal soft-start and an output enable control function. The RT8120J/K is available in the SOP-8 and SOP-8 (Exposed Pad) packages.
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  • 输入电压范围：3V~13.2V
  • 内建自举二极管
  • 内建 0.8V±1% 或 0.6V± 参考电压源
  • 栅极驱动器具有直通保护和短脉冲消除功能
  • 300kHz 固定工作频率
  • 内置软启动
  • 利用 MOSFET RDS(ON) 进行过流保护
  • 使能/关机控制
  • 驱动两只 N-MOSFET
  • 占空比范围：0%~85%
  • 快速瞬态响应
  • 使用外加反馈补偿的电压模式控制架构
  • 共用 LGATE 实现过流阈值设定
  • 欠压保护
  • SOP-8 和 PSOP-8 封装
  • 符合 RoHS 规范，不含卤素
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使用 5V 或 12V 电源的显卡、主板等系统 图像卡 3.3V~12V 输入的 DC/DC 稳压器 低压分布式电源
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