LT8697

Electrical Specifications Subject to Change LT8697 USB 5V 2.5A Output, 42V Input Synchronous Buck with Cable Drop Compensation Features Wide Input Range: 5V to 42V n Low Dropout Under All Conditions: 450mV at 2.1A n Accurate 5V Output: ±1.3% Over Full Temperature Range n Programmable Cable Drop Compensation n Programmable Output Current Limit n Output Current Monitor n Dual Input Feedback Permits Regulation on Output of USB Switch n Forced Continuous Mode for Fast Load Step Response n High Efficiency Synchronous Operation at 2MHz: 93% Efficiency at 2.1A, 5VOUT from 12VIN 95% Efficiency at 0.9A, 5VOUT from 12VIN n Fast Minimum Switch-On Time: 70ns n Adjustable Output from 5.0V to 5.25V n Adjustable and Synchronizable: 300kHz to 2.2MHz n Small Thermally Enhanced 3mm × 5mm 24-Lead QFN Package n Description The LT®8697 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator designed to power 5V USB applications. A precise output voltage and programmable cable drop compensation maintain accurate 5V regulation at the USB socket at the end of a long cable. Forced continuous operation allows the LT8697 to sink current, further enhancing accurate 5V regulation during load transients. Accurate and programmable output current limit, a power good indicator pin and an output current monitor pin improve system reliability and safety, allow the user to implement latch-off or auto-retry functionality and can eliminate the need for a US...