IFX91041EJVXUMA1

IFX91041EJVXUMA1 is a monolithic integrated circuit that provides all active functions for a step-down (buck) switching voltage regulator, capable of driving up to 1.8A load current with excellent line and load regulation. This device is suited for use in industrial applications featuring protection functions such as current limitation and overtemperature shutdown. The switching frequency of 370KHz allows to use of small and inexpensive passive components. It features an enable function reducing the shut-down current consumption to <lt/>2uA. The voltage mode regulation scheme of this device provides a stable regulation loop maintained by small external compensation components. Besides the feedforward control path offers an excellent line transient rejection. The integrated soft-start feature limits the current peak as well as voltage overshot at start-up.

• 1.8A step down voltage regulator, integrated power transistor
• PWM regulation with feedforward, input voltage range from 4.75V to 45V
• 370KHz switching frequency, synchronization input
• Soft-start function, input undervoltage lockout
• Current transition rise/fall time is 50ns typical at (ICC=1A, VS = 6V to 40V, Tj = -40°C to +125°C)
• Charge pump current is 2mA typical at (VS = 12V; VBUO = VBDS = GND)
• Power stage on-resistance is 500mohm maximum at (VS = 6V to 40V, Tj = -40°C to +125°C)
• Current consumption, shut down mode is 2µA max at (VEN = 0.8V; Tj<lt/> 105°C; VS = 16V)
• Junction temperature range from -40°C to 125°C
• PG-DSO-8-27 package