MAX17573ATG+

MAX17573ATG+ is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs that operates over a 4.5V to 60V input. The device features a peak-current-mode control architecture. An internal transconductance error amplifier produces an integrated error voltage at an internal node, which sets the duty cycle using a PWM comparator, a high-side current-sense amplifier, and a slope-compensation generator. At each rising edge of the clock, the high-side MOSFET turns on and remains on until either the appropriate or maximum duty cycle is reached or the peak current limit is detected. During the high-side MOSFET’s on-time, the inductor current ramps up. During the second half of the switching cycle, the high-side MOSFET turns off and the low-side MOSFET turns on. Typical applications are factory automation, aftermarket automotive, general point of load.

• Reduces external components and total cost
• No schottky-synchronous operation, auxiliary bootstrap supply (EXTVCC) for improved efficiency
• Internal loop compensation, all-ceramic capacitors, compact layout
• Reduces number of DC-DC regulators to stock, reduces power dissipation
• Adjustable output voltage range from 0.9V up to 90% of VIN
• 100kHz to 2.2MHz adjustable frequency with external clock synchronization
• PFM and DCM modes enable enhanced light-load efficiency, overtemperature protection
• Built-in hiccup mode overload protection, built-in output-voltage monitoring with active-low RESET
• Programmable EN/UVLO threshold, adjustable and monotonic start-up with prebiased output voltage
• 24L TQFN-EP 4mm x 5mm package, -40°C to +125°C temperature rating

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party