MP161 – INTEGRATED POWER SOLUTION FOR HOME/INDUSTRIAL AUTOMATION
PIN FUNCTIONS
SOIC-16
Pin #
Name
Description
1
2
INB
INA
Logic input for relay driver – channel B.
Logic input for relay driver – channel A.
Logic input for standby mode control. Set STBY to the low-level input for normal
operation. Set STBY to the high-level input for standby operation.
3
STBY
4, 14
5
GND
VO
Ground.
Low-dropout linear regulator output.
No connection.
6, 7, 12
NC
Drain of the internal 700V MOSFET. DRAIN is also the input of the high-voltage
current source.
8
9
DRAIN
VCC
FB
Power supply for the 700V switching regulator. VCC acts as the feedback input
when the internal fixed output is enabled or in standby mode.
Feedback input for the 700V switching regulator. Connect external resistors to FB
to implement the adjustable output. Otherwise, the internal fixed output is enabled.
10
11
13
SOURCE Source of the internal 700V MOSFET.
Low-dropout linear regulator input. VIN is the power supply for the standby control
and relay driver circuit.
VIN
15
16
OUTA
OUTB
Relay driver output – channel A.
Relay driver output – channel B.
MP161 Rev. 1.0
8/4/2017
www.MonolithicPower.com
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13
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