ME2149 regulator equivalent, ultra-small package pwm/pfm switching control step-up switching regulator.
Low voltage operation: Start-up is guaranteed from 0.9V(IOUT =1 mA ) Duty ratio: Built-in PWM/PFM switching control circuit 15 to 78 % . oscillator frequency 1.0MHz Outpu.
requiring high efficiency and high output current. The ME2149 series switches its operation to the PFM control circuit w.
The ME2149 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 internal low-ON-resist.
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