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RT7263A

3A, 21V, 500kHz 同步降压型 DC/DC 转换器

RT7263A
New

RT7263A为具有内部整合功率级MOSFET的同步降压型 DC/DC 转换器，可在宽输入电压范围内达到3A的连续电流输出并具有良好的负载与输入电压调节率。电流模式操作提供快速的瞬时响应与简易的回路稳定架构。对于错误情况的保护包括逐周期形式的限流机制与热关断保护功能。可调整的缓启动机制可有效降低输入电源在启动瞬间所产生的应力。RT7263A所需要的外部元件数极少，提供简便的应用方案。

应用

  • Distributive Power Systems
  • Battery Charger
  • DSL Modems
  • Pre-Regulator for Linear Regulators

主要规格

RT7263A
Status EOL
Vin (min) (V) 4.5
Vin (max) (V) 21
Number of Outputs 1
Vout (min) (V) 0.808
Vout (max) (V) 15
Output Adj. Method Resistor
Iout (max) (A) 3
Current Limit (typ) (A) 6.5
Freq (typ) (kHz) 500
Freq (min) (kHz) 300
Freq (max) (kHz) 2000
Ext Sync Yes
Ron_HS (typ) (mOhm) 120
Ron_LS (typ) (mOhm) 40
Iq (typ) (mA) 0.7
Features Adjustable Soft-Start;Current Mode Control;Enable Input;External Synchronization;Force PWM;Internal Compensation;OCP;OTP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type WDFN4x3-14;PSOP-8

关键特性

  • 宽输入电压范围: 4.5V 至 21V

  • 可调整输出范围0.808V 至 15V

  • 3A 输出电流

  • 120mΩ/40m&Omega 的内部功率 MOSFET 开关元件

  • 内建补偿机制减少额外的元件数

  • 500kHz恒定切换频率

  • 可由外部时序讯号同步操作范围300kHz至2MHz

  • 可调整的缓启动机制

  • 逐周期的电流限制机制

  • 热关断保护

  • 具有 SOP-8 (裸露焊盘)与WDFN-14L 的两种封装

  • 符合RoHS规范与无卤特性

Datasheet

DS7263A-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

DS7263A-01.pdf

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