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RT7263B

3A, 21V, 500kHz 同步降壓型 DC/DC 轉換器

RT7263B
New

RT7263B為具有內部整合功率級MOSFET的同步降壓型 DC/DC 轉換器，可在寬輸入電壓範圍內達到3A的連續電流輸出並具有良好的負載與輸入電壓調節率。電流模式操作提供快速的暫態回應與簡易的迴路穩定架構。對於錯誤情況的保護包括逐週期形式的限流機制與熱關斷保護功能。可調整的緩啟動機制可有效降低輸入電源在啟動瞬間所產生的應力。RT7263B所需要的外部元件數極少，提供簡便的應用方案。

應用

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

主要規格

RT7263B
Status EOL
Vin (min) (V) 4.5
Vin (max) (V) 21
Number of Outputs 1
Vout (min) (V) 0.603
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

關鍵特性

  • 寬輸入電壓範圍: 4.5V 至 21V

  • 可調整輸出範圍0.603V 至 15V

  • 3A 輸出電流

  • 120mΩ/40m&Omega 的內部功率 MOSFET 開關元件

  • 內建補償機制減少額外的元件數

  • 500kHz固定切換頻率

  • 可由外部時序訊號同步操作範圍300kHz至2MHz

  • 可調整的緩啟動機制

  • 逐週期的電流限制機制

  • 熱關斷保護

  • WDFN-14L 的封裝

  • 符合RoHS規範與無鹵特性

Datasheet

DS7263B-01.pdf

Videos

如何使用簡單工具對電源轉換器的穩定性進行測試評估?

Datasheet

DS7263B-01.pdf

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