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Product attributes Property Value
Manufacturer Monolithic Power Systems Inc.
Product Series
Packaging Tape & Reel (TR) |
Output Isolation Non-Isolated
Internal Switch(s) Yes
Voltage - Breakdown 500V
Topology Boost, Buck, Buck-Boost, Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) 5.3V ~ 5.6V
Duty Cycle -
Frequency - Switching -
Power (Watts) 4 W
Fault Protection Open Loop, Over Load, Over Temperature, Short Circuit
Control Features -
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Monolithic Power Systems MP155GS-Z is a non-isolated offline switcher supporting Boost, Buck, Buck-Boost, and Flyback topologies with an integrated power switch. It delivers up to 4 W with a 500V breakdown rating and operates from a Vcc supply of 5.3V to 5.6V. Protection includes open loop, over load, over temperature, and short circuit. Housed in an 8-SOIC package, it operates from -40°C to 125°C junction temperature.

  • Multi-topology support (Boost, Buck, Buck-Boost, Flyback) adds design flexibility.
  • Integrated switch reduces external component count.
  • 500V breakdown rating suits offline non-isolated applications.
  • Multiple fault protections (open loop, over load, over temperature, short circuit) improve reliability.
  • Compact 8-SOIC package for space-constrained designs.

Compact Non-Isolated Supplies

The MP155GS-Z supports Buck, Boost, Buck-Boost, and Flyback topologies in a non-isolated configuration, delivering up to 4 W for compact direct-coupled designs.

Bias & Housekeeping Rails

A 500V breakdown rating and 5.3V to 5.6V Vcc supply make this device suitable for offline bias rails in larger systems.

Smart Home & IoT Devices

Open loop, over load, over temperature, and short circuit protection support reliable operation in connected electronics.

Industrial Control Boards

The 8-SOIC package and -40°C to 125°C junction range enable use in space-constrained industrial control designs.

Q: What topologies does the MP155GS-Z support?
A: It supports Boost, Buck, Buck-Boost, and Flyback topologies in a non-isolated configuration.
Q: Is the power switch integrated?
A: Yes, an integrated switch is built in.
Q: What is the breakdown voltage?
A: The device features a 500V breakdown rating.
Q: What is the Vcc supply range?
A: The Vcc supply range is 5.3V to 5.6V.
Q: What power level does it support?
A: It delivers up to 4 W of output power.
Q: What protections are included?
A: Open loop, over load, over temperature, and short circuit protection.
Base Product Number : MP155GS-Z
4 W 500V Breakdown 8-SOIC AC-DC Boost Converter Buck Converter Buck-Boost Flyback MPS Non-Isolated Offline Switcher
Q: What topologies does the MP155GS-Z support?
A: It supports Boost, Buck, Buck-Boost, and Flyback topologies in a non-isolated configuration.
Q: Is the power switch integrated?
A: Yes, an integrated switch is built in.
Q: What is the breakdown voltage?
A: The device features a 500V breakdown rating.
Q: What is the Vcc supply range?
A: The Vcc supply range is 5.3V to 5.6V.
Q: What power level does it support?
A: It delivers up to 4 W of output power.
Q: What protections are included?
A: Open loop, over load, over temperature, and short circuit protection.