UNISONIC TECHNOLOGIES CO., LTD

USR1101

Preliminary

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2013 Unisonic Technologies Co., Ltd

QW-R103-062.a

5V/12V SYNCHRONOUS

BUCK PWM DC-DC

CONTROLLER

DESCRIPTION

The UTC USR1101 is a high efficiency synchronous buck

PWM controller, with operating at fixed 300kHz frequency,

Internal soft-start, frequency compensation networks and

integrates all of the control, output adjustment, monitoring and

protection functions into a single package.

Adjustable over-current protection (OCP) monitors the voltage

buck PWM DC-DC controller.

FEATURES

* Operating with 5V or 12V supply voltage

* Drives all low cost N-channel MOSFETs

* PWM control mode

* 300kHz fixed frequency

* Internal soft-start

* Over-current fault monitor on MOSFET, no current sense

resistor required

* RoHS compliant and 100% lead (Pb)-free

SOP-8

ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

USR1101L-S08-R

USR1101G-S08-R

SOP-8

Tape Reel

USR1101L-S08-T

USR1101G-S08-T

SOP-8

Tube

Note: xx: Output Voltage, refer to Marking Information.

USR1101G-S08-R

(1)Packing Type

(2)Package Type

(3)Halogen Free

(1) R: Tape Reel, T: Tube

(2) S08: SOP-8

(3) G: Halogen Free, L: Lead Free