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RT6222A/RT6222B

2.5A, 18V, 500kHz ACOT® 同步降压型转换器

RT6222A/RT6222B
New

RT6222A/B 为ACOT™ (Advanced Constant On-Time)操作模式之同步整流降压式直流转换器。 ACOTTM 操作可在少量组件的应用下提供快速的瞬时响应。具备低阻抗的内建MOSFET可在广输入电压范围4.3V至18V的操作下具有高效率的表现。RT6222A/B 可支持陶瓷电容的应用，输出电压可调范围为0.6V 至8V。

应用

  • 工业、商用的低功率电源系统
  • 计算机接口设备产品
  • 液晶屏幕于与电视
  • 绿能电器产品与相关应用装置
  • 高效能DSP、FPGA与ASIC等负载条件操作的应用

主要规格

RT6222A RT6222B
Status Active Active
Vin (min) (V) 4.3 4.3
Vin (max) (V) 18 18
Number of Outputs 1 1
Vout (min) (V) 0.6 0.6
Vout (max) (V) 8 8
Output Adj. Method Resistor Resistor
Iout (max) (A) 2.5 2.5
Current Limit (typ) (A) 3.4 3.4
Freq (typ) (kHz) 500 500
Ext Sync No No
Ron_HS (typ) (mOhm) 150 150
Ron_LS (typ) (mOhm) 90 90
Iq (typ) (mA) 0.5 0.5
Features ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;PSM;Stable with Ceramic Capacitor;UVP ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;Stable with Ceramic Capacitor;UVP
Package Type TSOT-26(FC) TSOT-26(FC)

关键特性

  • 4.3V 至18V 输入电压范围

  • 2.5A输出电流

  • 先进固定导通时间(ACOT)控制

  • 快速瞬时响应

  • 支持陶瓷电容

  • 效率高达95%

  • 500kHz固定频率

  • 可调输出电压范围0.6V 至 8V

  • 逐周期的限流限制机制

  • 输入低电压锁定

  • 打嗝模式的过低电压保护机制

  • 过热关机保护

  • 在轻载时的高效率节能模式

  • 轻载时低输出波纹

  • 高侧过流限制

  • 符合RoHS规范与无卤特性

Application Notes

Datasheet

DS6222AB-01.pdf

Videos

怎样使用简单工具对电源转换器的稳定性进行测试评估?

Datasheet

DS6222AB-01.pdf

RT6222AHGJ6F
Package Type:TSOT-26(FC)
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