MP020A-5 – OFFLINE, PRIMARY-SIDE REGULATOR W/ CC/CV CONTROL AND 700V MOSFET
PIN FUNCTIONS
SOIC8-7A
Pin #
Name Description
Supply. The IC begins functioning when VCC charges to the on threshold (VCCH) through
an internal high-voltage current source. When VCC falls below the off threshold (VCCL),
the internal high-voltage current source turns on to charge VCC. Connect a 0.1µF
decoupling ceramic capacitor for most applications.
1
VCC
2, 5, 6
3
GND
FB
Ground.
Feedback. FB provides the output reference voltage and detects the falling voltage
edges to determine the operation mode (CV mode or CC mode).
Output cable compensation. Connect a 1μF ceramic capacitor as a low pass filter. The
upper resistor of the resistor divider connected to FB adjusts the compensation voltage.
4
8
CP
DRAIN Internal MOSFET drain. DRAIN is the input for the high-voltage start-up current source.
MP020A-5 Rev. 1.0
6/23/2017
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