LM25180QNGURQ1 Description

The LM25180QNGURQ1 is a primary-side regulated(PSR) fly back 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 fly back 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. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 65-Vpower MOSFET provides output power up to 7 W with enhanced headroom for line transients.
LM25180QNGURQ1 Features

AEC-Q100-qualified for automotive applications
-Device temperature grade 1: –40°C to 125°C ambienttemperature range
Designed for reliable and rugged applications
-Wide input voltage range of 4.5 V to42 V
-Robust solution withonly one component crossing the isolation barrier
-±1.5% total output regulationaccuracy
-Optional VOUT temperaturecompensation
-6-ms internal or programmable soft start
-InputUVLO and thermal shutdown protection
-Hiccup-mode overcurrent faultprotection
-–40°C to +150°C junction temperaturerange
LM25180QNGURQ1 Applications

Automotive body electronics
Automotive power train systems
Isolated bias power rails
Portable electronics
Mobile phones