The LM5160-Q1 is a 65-V,
2-A synchronous step-down converter with integrated
high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop
compensation and supports high step-down ratios with fast transient response. An internal feedback
amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The
on-time varies inversely with input voltage resulting in nearly constant switching
Peak and valley current limit circuits protect against overload conditions. The
undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage
threshold and hysteresis. The LM5160-Q1 is programmed through the FPWM pin to operate in continuous
conduction mode (CCM) from no load to full load or to automatically switch to discontinuous
conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports
multiple-output and isolated Fly-Buck applications using a coupled inductor.
The LM5160-Q1 is qualified to automotive AEC-Q100 grade 1 and is
available in 14-pin HTSSOP package with 0.65-mm pin pitch.
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