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The RTQ2820A is a high-performance, synchronous step-down converter that can deliver up to 20A output current with a wide input supply voltage range of 3.5V to 17V. The device integrates low RDS(ON) power MOSFETs, an accurate 0.6V ± 1% reference over the full operating junction temperature range, and an integrated diode for the bootstrap circuit, offering a very compact solution.
The RTQ2820A adopts Advanced Constant-On-Time (ACOT®) control architecture that provides excellent transient performance and reduces the count of external components. In steady states, the ACOT® can operate at nearly constant switching frequency over line, load and output voltage ranges, making the EMI filter design easier.
The device offers a variety of functions to provide more design flexibility. The selectable switching frequency, current limit level, PWM operation modes make the RTQ2820A easy-to-use over wide application range. An independent enable control input pin and power-good indicator are also provided for easy sequence control. The device provides a programmable soft-start-up by an external capacitor connected to the SS/TR pin to control the inrush current during start-up.
The RTQ2820A provides complete protection functions including input undervoltage lockout, output undervoltage protection, output overvoltage protection, overcurrent protection, and thermal shutdown. The RTQ2820A is available in a thermally enhanced WQFN-21TL 3x4 (FC) package.
The recommended junction temperature range is -40°C to 150°C.
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  • 宽输入电压范围2.7V至17V，外部3.3V VCC偏置3.5V至17V，内部VCC偏置
  • 输出电压从0.6V至5.5V
  • 0.6V ± 0.5%电压参考，在0°C至70°C结温范围内
  • 0.6V ± 1%电压参考，在-40°C至150°C结温范围内
  • ACOT® 控制，提供卓越的瞬态性能
  • 陶瓷输出电容稳定
  • 轻载时可选择FCCM或PSM操作
  • 可选择的操作开关频率（600KHz/800KHz/1MHz）
  • 非锁存的OCP、UVP、UVLO和OTP故障，OVP锁存关闭
  • 差分远程感应电压，提高输出精度
  • 电源良好指示器
  • 使能控制
  • 可编程软启动时间，默认1ms
  • 可编程谷值电流限制水平
  • 预偏置输出的单调启动
  • 输出电压跟踪
  • 小型21T-Lead WQFN（3x4）（FC）封装
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服务器、存储和网络设备 电信基础设施 点负载（POL）电源模块 高密度直流-直流转换器
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