供应国产外置MOS升压IC/ME2109替代LY8355/LY1029/CH1001/AM3309/SX1315

 

 Description：
The ME2109 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 ME2109 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.
Feature：
l Low voltage operation: Start-up is guaranteed from
0.9 V(IOUT =1 mA )
l Duty ratio: Built-in PWM/PFM switching control
circuit 15 to 78 % .
l oscillator frequency：300KHz
l External parts: coil, diode, capacitor, and transistor
l Output voltage range: 1.5V ~6.5 V
l Output voltage accuracy：±2%
l Soft start function: 2 ms.
l PACKAGE：SOT-23-5

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