AG体育

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MP1430,1.22V反饋電壓、3A負載單片集成DC-DC高效降壓轉換芯片

MP1430】1.22V反饋電壓、3A負載單片集成DC-DC高效降壓轉換芯片

  • MP1430 所屬品牌:MPS
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MP1430 詳細介紹
相關商品: MP1482 RT8272 RT8270 TP3320 TP3322 TP3321 TP3325 TP3323 AP1509 FP6291 MP1488

MP1430】1.22V反饋電壓、3A負載單片集成DC-DC高效降壓轉換芯片,MP1430工作電壓為(6V~28V),操作頻率高達385KHz,使得可選取比較小的電感電容與之配合即達到小的紋波輸出;MP1430具有外圍元件少,可以連續輸出電流達到3A,具有過溫/過流和短路保護。另外通過對反饋電阻的調整,MP1430輸出電壓可任意調節,還有可通過一個外部電阻調整過流保護點,輸出短路時可自動也降低操作頻率使輸出功率變小;MP1430AG体育可廣泛用于各種設備的電池電壓轉換和電源變換電路,如便攜DVD,LCD,車載電器,路由器,數碼相框,機頂盒,網絡交換機等。

MP1430 引腳定義
1. MP1430--BS:High-Side Gate Drive Boost Input. BS supplies the drive for the high-side N-Channel MOSFET switch. Connect a 10nF or greater capacitor from SW to BS to power the high side switch. ;
2. IMP1430--N :Power Input. IN supplies the power to the IC, as well as the step-down converter switches. Drive IN with a 6V to 28V power source. Bypass IN to GND with a suitably large capacitor to eliminate
noise on the input to the IC;
3. MP1430--SW :Power Switching Output. SW is the switching node that supplies power to the output. Connect the output LC filter from SW to the output load. Note that a capacitor is required from SW to BS ;
to power the high-side switch.
4. MP1430--Ground. (Note: Connect the exposed pad on backside to Pin 4). ;
5. MP1430--FB:Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a resistive voltage divider from the output voltage. The feedback threshold is 1.222V;
6. MP1430--COMP:Compensation Node. COMP is used to compensate the regulation control loop. Connect a series RC network from COMP to GND to compensate the regulation control loop. In some cases, an additional capacitor from COMP to GND is required.
7.MP1430--EN:Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high to turn on the regulator, drive EN low to turn it off. An Under Voltage Lockout (UVLO) function can be implemented by the addition of a resistor divider from VIN to GND. For complete low current shutdown its needs to be less than 0.7V. For automatic startup, leave EN unconnected
8.MP1430--SS:Soft-Start Control Input. SS controls the soft-start period. Connect a capacitor from SS to GND to set the soft-start period. A 0.1µF capacitor sets the soft-start period to 10ms. To disable the
AG体育 soft-start feature, leave SS unconnected.


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