LM25576MHX-NS

The LM25576 is an easy to use SIMPLE SWITCHER® buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 42V, the LM25576 delivers 3A of continuous output current with an integrated 170mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 1MHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM25576 guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a power enhanced TSSOP-20 package featuring an exposed die attach pad for thermal dissipation. The LM25576 is supported by the full suite of WEBENCH® On-Line design tools.

Applications

• Automotive
• Industrial

Key features

• LM25576Q is an Automotive Grade product that is AECQ100 grade 1 qualified (-40°C to + 125°C operating junction temperature) Integrated 42V, 170mΩ N-channel MOSFET
• Ultra-wide input voltage range from 6V to 42V
• Adjustable output voltage as low as 1.225V
• 1.5% feedback reference accuracy
• Operating frequency adjustable between 50kHz and 1MHz with single resistor
• Master or slave frequency synchronization
• Adjustable soft-start
• Emulated current mode control architecture
• Wide bandwidth error amplifier
• Built-in protection
• Automotive Grade product datasheet that is AEC-Q100 grade 0 qualified is available upon request. (-40°C to + 150°C operating junction temperature)