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RT8280

3A, 24V, 3MHz 降壓型 DC/DC 轉換器

RT8280
New

RT8280為支援高壓輸入的降壓轉換器，可支援輸入電壓範圍從4.5V至24V，最大輸出電流至3A。其電流模式的操作提供快速的暫態回應與簡易的迴路穩定架構，此外並提供了逐週期形式的限流機制與熱關斷保護功能。操作于關機模式時，只有25μA的低電流消耗。RT8280採用SOP-8(裸露焊盤)的封裝規格。

應用

  • DSL Modem for ADSL2+ Standard
  • Distributed Power Systems
  • Pre-Regulator for Linear Regulators

主要規格

RT8280
Status NRND
Vin (min) (V) 4.5
Vin (max) (V) 24
Number of Outputs 1
Vout (min) (V) 0.8
Vout (max) (V) 15
Output Adj. Method Resistor
Iout (max) (A) 3
Current Limit (typ) (A) 5
Freq (typ) (kHz) 2200
Freq (min) (kHz) 220
Freq (max) (kHz) 3000
Ext Sync No
Ron_HS (typ) (mOhm) 110
Iq (typ) (mA) 0.8
Features Adjustable Frequency;Current Mode Control;Enable Input;Force PWM;OCP;OTP;Stable with Ceramic Capacitor;UVP
Package Type PSOP-8

關鍵特性

  • 輸入電壓範圍 : 4.5V 至 24V

  • 可調輸出電壓範圍 : 0.8V 至 15V

  • 3A 輸出電流

  • 25μA 的低關機電流

  • 操作頻率于2.2Mhz時，效率高達 90%

  • 可操作頻率範圍: 220kHz至3MHz

  • 內部的緩啟動設計

  • 可採用低ESR的陶瓷電容做為輸出電容

  • 熱關斷保護

  • 逐週期的電流限制機制

  • 符合RoHS規範與無鹵特性

Datasheet

Caption Name

Videos

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Datasheet

Caption Name

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