聯系人：肖先生（業務）
手機：13632573531
電話：0755-26966170
QQ：573939828
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聯系人：林先生（技術）13530140537
QQ: 793105868
鄧先生：15986774905
QQ:65903949
電話：0755-26966170
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地址：深圳市寶安區西鄉僑鴻盛文化創意園寫字樓A棟614-616The 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
