Texas Instruments LM5149-Q1

Description

The LM5149-Q1 is a 80-V, ultra-low IQ synchronous buck DC/DC controller for high-current, single-output applications. The controller uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The LM5149-Q1 can be set up in dualphase mode with accurate current sharing for highcurrent applications. The device can operate with VIN as low as 3.5 V, at nearly 100% duty cycle if needed.

Features

• AEC-Q100 qualified for automotive applications:– Device temperature grade 1: –40°C to +125°Cambient operating temperature
• Functional Safety-Capable– Documentation available to aid functional safetysystem design
• Two integrated EMI mitigation mechanisms– Active EMI Filter for enhanced EMIperformance at lower frequencies– Selectable dual random spread spectrum(DRSS) for enhanced EMI performance acrosslow and high-frequency bands– EMI reduced by an average of 25 dBµV– Reduces the external differential-mode inputfilter size by 50% and lowers systems cost

Typical applications

• Automotive electronic systems
• High-voltage battery-operated systems
• Infotainment systems, instrument clusters, ADAS
• Body electronics

More information

• Datasheet
• IC product information