LMR14050SQDPRTQ1

The LMR14050-Q1 device is a 40V, 5A step-down regulator with an integrated high-side metal-oxide-semiconductor field-effect transistor (MOSFET). The device features a wide input voltage range from 4V to 40V, making it suitable for regulating unregulated power supplies in a variety of applications from industrial to automotive. The regulator has a quiescent current of 40μA in sleep mode, making it ideal for battery-powered systems. It also has an ultra-low current of 1μA in shutdown mode, further extending battery life. The regulator has a wide adjustable switching frequency range, which allows for optimization of efficiency or external component size. Internal loop compensation means that users do not have to undertake the tedious task of designing loop compensation components and can minimize the number of external components of the device. The precision enable input simplifies regulator control and system power sequencing. In addition, the device also incorporates a variety of protection features: cycle-by-cycle current limit protection, thermal sensing and thermal shutdown protection for excessive power dissipation, and output overvoltage protection. The LMR14050-Q1 comes in an 8-pin HSOIC package with an exposed pad for low thermal resistance.

Applications

• Automotive battery regulation
• Industrial power supplies
• Telecom and data communication systems
• General-purpose wide input voltage regulation

Key features

• Qualified to AEC-Q100 with the following results:
• Device temperature grade 1: ambient operating temperature range of -40°C to 125°C
• Device HBM ESD classification level H1C
• Device CDM ESD classification level C4A
• Input voltage range: 4V to 40V
• 5A continuous output current
• 40μA ultra-low quiescent operating current
• 90mΩ high-side MOSFET
• Minimum on-time: 75ns
• Current-mode control
• Adjustable switching frequency range: 200kHz to 2.5MHz
• Synchronizable to external clock frequency
• Spread spectrum option for reduced EMI
• Internal compensation for ease of use
• High duty cycle operation support
• Precision enable pin
• Shutdown current: 1μA
• External soft-start
• Thermal protection, overvoltage protection, and short-circuit protection
• 8-pin thermally enhanced HSOIC PowerPAD package