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      產品詳情
      • 產品名稱:CP2139

      • 產品型號:CP2139
      • 產品廠商:創智輝
      • 產品價格:0
      • 折扣價格:0
      • 產品文檔:
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      簡單介紹:
      The CP2139 series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM/PFM switching control circuit. With an external low-ON-resistance Nch Power MOS, this product is applicable to applications requiring high efficiency and high output current. The CP2139 series switches its opera
      詳情介紹:

      The CP2139 series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM/PFM switching control circuit. With an external low-ON-resistance Nch Power MOS, this product is applicable to applications requiring high efficiency and high output current. The CP2139 series switches its operation to the PFM control circuit whose duty ratio is 15 % with to the PWM/PFM switching control circuit under a light load and to prevent decline in the efficiency by IC operation current. 

      Features:

       Low voltage operation: Start-up is guaranteed from 0.9 V(IOUT =1 mA ) 

       Duty ratio: Built-in PWM/PFM switching control circuit 15 to 78 % . 

       oscillator frequency:1.0MHz 

       External parts: coil, diode, capacitor, and transistor 

       Output voltage range:<20V 

       Feedback voltage accuracy:±2% 

       Soft start function: 2 ms


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