ADM00770

ADM00770 is a MIC2128 evaluation board for a constant-frequency synchronous buck controller with adaptive on-time control architecture. The MIC2128 operates over an input supply range of 4.5V to 75V. The output voltage is adjustable down to 0.6V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 270kHz to 800kHz.

• Input: 7V to 75V (optimized for 48V)
• Output: 5V at 5A
• Features soft-start (SS) time selection pin which allows the user to adjust output soft-start time
• Features an auxiliary bootstrap low-dropout (LDO)
• Can start up monotonically into a pre-biased output
• Features an open drain power good signal (PG) which signals when the output is in regulation
• Operates in discontinuous conduction mode during soft start at light loads
• 300kHz switching frequency (adjustable 270kHz to 800kHz)

Contents

MIC2128 evaluation board, Information sheet.

Warnings

The MIC2128 evaluation board does not have reverse polarity protection. Applying a negative voltage to the VVIN and GND terminals may damage the device. Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

90 Day Warranty only. After Expiration of Warranty returns must be processed via Microchip.