Texas Instruments LM25180
The LM25180 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 42 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation. The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier.| Part No. | LM25180 |
|---|---|
| Datasheet | LM25180 Download |
| Manufacturer |  Texas Instruments |
| Description | PSR Flyback DC/DC Converter |
| Buy | Stock & Price |
FEATURES
2APPLICATIONS
●1 Designed for reliable and rugged applications – Wide input voltage range of 4.5 V to 42 V with operation down to 3.5 V after start-up – Robust solution with only one component crossing the isolation barrier – ±1.5% total output regulation accuracy – Optional VOUT temperature compensation – 6-ms internal or programmable soft start – Input UVLO and thermal shutdown protection – Hiccup-mode overcurrent fault protection – –40°C to +150°C junction temperature range● Integration reduces solution size and cost – Integrated 65-V, 0.4-Ω power MOSFET – No opto-coupler or transformer auxiliary winding required for VOUT regulation – Internal loop compensation
● High-efficiency PSR flyback operation – Quasi-resonant MOSFET turn-off in BCM – Low input quiescent current – External bias option for improved efficiency – Single- and multi-output implementations
● Ultra-low conducted and radiated EMI signatures – Soft switching avoids diode reverse recovery – Optimized for CIS...
