M7085 Datasheet | Unisonic Technologies

.. UNISONIC TECHNOLOGIES CO., LTD M7085 PFM STEP-DOWN DC-DC CONTROLLER DESCRIPTION The UTC M7085 step-down DC-DC Controller is optimized for use with a power PMOSFET. It utilize a Pulse-Frequency Modulation (PFM) control scheme that implies high efficiency operation at light loads. There are two user-selectable over-current protection methods one provides over-current protection by taking advantage of the RDS(ON) of the P- Channel. The other provides accurate over-current protection with the use of an external sense resistor. The cycle-by-cycle current limit threshold can be adjusted with a external resistor. CMOS IC MSOP -8 - Pb-free plating product number: M7085L Features - High efficiency 90% and up is possible - Low dropout operation 100% duty cycle - Maximum operating frequency > 1MHz - Two methods of over-current protection - 4.5V ~ 35V wide input range - 1.24V ~ VIN adjustable output range ORDERING INFORMATION Order Number Normal Lead Free Plating M7085-SM1-R M7085L-SM1-R M7085-SM1-T M7085L-SM1-T Package MSOP-8 MSOP-8 Packing Tape Reel Tube M7085L-SM1-R (1)Packing Type (2)Package Type (3)Lead Plating (1) R: Tape Reel, T: Tube (2) SM1: MSOP-8 (3) L: Lead Free Plating , Blank: Pb/Sn .unisonic..tw Copyright © 2005 Unisonic Technologies Co., Ltd 1 of 8 QW-R502-092,A PIN CONFIGURATION ISENSE SGND NC FB CMOS IC 1 2 3 4 8 7 6 5 VIN PGATE PGND ADJ PIN DESCRIPTION PIN NO 1 2 3 4 5 6 7 8 PIN NAME ISENSE SGND NC FB ADJ PGND GATE VIN DESCRIPTION The over-current protection input pin that be connected to Drain node of the external PChannel. Signal ground. No connection. The feedback voltage input. The over-current protection input pin that adjust current limit threshold. Power ground. Driver pin to Gate of the external P-Channel. PGATE swings between VIN and VIN-5V. Power supply UNISONIC TECHNOLOGIES CO.,...