LM5574Q is an Automotive Grade product that is AEC-Q100 grade 1 qualified (−40°C to + 125°C operating junction temperature)
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Integrated 75V, 750mΩ N-channel MOSFET
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Ultra-wide input voltage range from 6V to 75V
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Adjustable output voltage as low as 1.225V
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1.5% feedback reference accuracy
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Operating frequency adjustable between 50kHz and 500kHz with single resistor
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Master or slave frequency synchronization
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Adjustable soft-start
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Emulated current mode control architecture
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Wide bandwidth error amplifier
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Built-in protection
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Automotive Grade product datasheet that is AEC-Q100 grade 0 qualified is available upon request
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(−40°C to + 150°C operating junction temperature)
General Description
The LM5574 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. More...
The LM5574 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 - 75V, the LM5574 delivers 0.5A
of continuous output current with an integrated 750mΩ 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 500kHz 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 LM5574 guarantees robustness with cycle-by-cycle current
limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package. The
LM5574 is supported by the full suite of WEBENCH On-Line design tools.
RoHS Compliance Information
