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RT8509A

4.5A Boost DC/DC 轉換器

RT8509A
New

RT8509A 是用於為 TFT-LCD 供電的高性能 Boost 架構 DC/DC 轉換器，採用電流模式控制架構、工作頻率固定的 PWM 控制電路，集成了功率開關，具有高轉換效率和快速的瞬態回應特性。其輸入電壓範圍為 2.4V~14V，輸出電壓可用電阻分壓器進行設定，最高可達 24V。其最高峰值電流限制為 4.5A（最小值），還具有可調節的軟啟動、過壓保護和過溫保護等特性。其封裝為 WDFN-12L 5x5。

應用

  • GIP TFT-LCD 屏

主要規格

RT8509A
Status NRND
Vin (min) (V) 2.8
Vin (max) (V) 14
Vout (min) (V) 3.5
Vout (max) (V) 24
Output Adj. Method Resistor
Iq (typ) (mA) 5
SW Current Limit (typ) (A) 5
Freq (typ) (kHz) 1200
Freq (min) (kHz) 1000
Freq (max) (kHz) 1500
Ron (typ) (Ohm) 0.1
Features Adjustable Soft-Start;Current Mode Control;Enable Input;OCP;OVP;Stable with Ceramic Capacitor
Package Type WDFN5x5-12

關鍵特性

  • 效率可達 90%

  • 輸出電壓可調，最高可達 24V

  • 輸入電壓範圍：2.8V~14V

  • 輸入電壓欠壓閉鎖

  • 1.2MHz 固定工作頻率

  • 可調軟啟動

  • 輸出過壓保護

  • 過溫保護

  • WDFN 封裝

  • 符合 RoHS 規範，不含鹵素

Application Notes

Datasheet

DS8509A-00.pdf

Datasheet

DS8509A-00.pdf

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