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M7085

UTC
Part Number M7085
Manufacturer UTC
Description PFM STEP-DOWN DC-DC CONTROLLER
Published Apr 10, 2007
Detailed Description www.DataSheet4U.com UNISONIC TECHNOLOGIES CO., LTD M7085 PFM STEP-DOWN DC-DC CONTROLLER DESCRIPTION The UTC M7085 step-...
Datasheet PDF File M7085 PDF File

M7085
M7085

Overview
www.
DataSheet4U.
com 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 www.
unisonic.
com.
tw Copyright © 2005 Unisonic Technologies Co.
, Ltd 1 of 8 QW-R502-092,A M7085 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.
, LTD www.
unisonic.
com.
tw 2 of 8 QW-R502-092,A M7085 BLOCK DIAGRAM VIN 8 Internal Regulator CMOS IC Internal 6V PMOS BUFFER...


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