UNISONIC TECHNOLOGIES CO., LTD

M7085

CMOS IC

www.unisonic.com.tw

1 of 8

Copyright © 2005 Unisonic Technologies Co., Ltd

QW-R502-092,A

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

protection with the use of an external sense resistor. The

cycle-by-cycle current limit threshold can be adjusted with a

external resistor.

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

MSOP-8

*Pb-free plating product number: M7085L

ORDERING INFORMATION

Order Number

Normal

Lead Free Plating

Package

Packing

M7085-SM1-R

M7085L-SM1-R

MSOP-8

Tape Reel

M7085-SM1-T

M7085L-SM1-T

MSOP-8

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