Monolithic Power Systems Inc. MP155GJ-P
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.86 | $0.86 |
| 15+ | $0.84 | $12.60 |
| 25+ | $0.82 | $20.50 |
| 50+ | $0.77 | $38.50 |
| 100+ | $0.68 | $68.00 |
| N+ | $0.14 | Price Inquiry |
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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 | SOT-23-5 Thin, TSOT-23-5 |
| Supplier Device Package | TSOT-23-5 |
| ROHS |
The MP155GJ-P from Monolithic Power Systems is a versatile offline converter controller that supports Boost, Buck, Buck-Boost, and Flyback topologies in a single device. It integrates a 500V switch and operates from a 5.3V to 5.6V Vcc supply, delivering up to 4 W. Housed in a compact TSOT-23-5 package, it includes open-loop, over-load, over-temperature, and short-circuit protection across a -40°C to 125°C junction range.
- Multi-topology flexibility (Boost, Buck, Buck-Boost, Flyback) simplifies BOM consolidation across designs.
- Integrated 500V switch reduces external component count and board space.
- Compact TSOT-23-5 package suits space-constrained offline supplies.
- Comprehensive protection set (open loop, over load, over temperature, short circuit) improves reliability.
- Wide -40°C to 125°C junction range supports demanding environments.
Compact Offline Bias Supplies
The MP155GJ-P's integrated 500V switch and multi-topology flexibility make it well suited to small offline bias supplies where a compact SOT-23-5 footprint is essential.
Non-Isolated Auxiliary Rails
Operating as a non-isolated Buck or Buck-Boost converter, it can generate low-power auxiliary rails directly from a rectified mains input with minimal external components.
Low-Power Flyback Designs
When isolation is required, the Flyback configuration supports up to 4 W, ideal for gate-drive or housekeeping supplies.
Boost Pre-Regulation
The Boost topology option enables step-up conversion for front-end regulation in space-constrained adapters.
Harsh Environment Electronics
With a -40°C to 125°C junction temperature range, it suits industrial controls and outdoor enclosures.
- Q: What switching topologies does the MP155GJ-P support?
- A: It supports Boost, Buck, Buck-Boost, and Flyback topologies in a single controller.
- Q: Is the power switch integrated?
- A: Yes, the MP155GJ-P integrates the switch with a 500V breakdown voltage rating.
- Q: What is the Vcc supply range?
- A: The IC operates from a 5.3V to 5.6V Vcc supply.
- Q: What power level is it rated for?
- 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.
- Q: What switching topologies does the MP155GJ-P support?
- A: It supports Boost, Buck, Buck-Boost, and Flyback topologies in a single controller.
- Q: Is the power switch integrated?
- A: Yes, the MP155GJ-P integrates the switch with a 500V breakdown voltage rating.
- Q: What is the Vcc supply range?
- A: The IC operates from a 5.3V to 5.6V Vcc supply.
- Q: What power level is it rated for?
- 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.

MP155GJ-P.pdf