UNISONIC TECHNOLOGIES CO., LTD

US2651

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 6

Copyright © 2014 Unisonic Technologies Co., Ltd

QW-R502-B23.b

HIGH PRECISION LOW COST

MCM POWER SWITCH



DESCRIPTION

The UTC US2651 is a high performance, high precision and low

cost PWM Power switch for non-isolated buck application. It

combines a dedicated current mode PWM controller and error

amplifier for low component count. UTC US2651 use UTC

proprietary frequency shuffling technique for EMI performance. And

oscillator with frequency-reduction control is implemented.

The UTC US2651 has soft start control and protection function,

such as Cycle-by-Cycle current limiting, Over Loading Protection,

OVP, and UVLO.



FEATURES

* Power on soft-start

* Load compensation

* Built-in error amplifier

* Oscillator of fixed frequency with frequency-reduction control

* Frequency shuffling for EMI improvement

* Built-in Leading Edge Blanking (LEB)

* Cycle-by-Cycle current limiting

* Over loading protection

* Output short-circuit protection

DIP-8

SOP-8



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

US2651L-D08-T

US2651G-D08-T

DIP-8

Tube

-

US2651G-S08-R

SOP-8

Tape Reel

US2651L-D08-T

(1)Packing Type

(2)Package Type

(1) T: Tube, R: Tape Reel

(2) D08: DIP-8, S08: SOP-8

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

(3)Green Package