The LM5160DNTT is a synchronous Step-down Converter with integrated high-side and low-side MOSFETs. The 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 frequency. 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 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.
● Integrated high and low side switches - No Schottky diode required
● Constant on-time control - No external loop compensation and fast transient response
● Nearly constant switching frequency
● Programmable soft-start time
● Pre-biased startup
● Peak current limiting protection
● Adjustable input UVLO and hysteresis
● Thermal shutdown protection
● ±1% Feedback voltage reference
● Green product and no Sb/Br
