UNI SONI C TECHNOLOGI ES CO., LTD

UC2844/45

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

1 of 6

Copyright © 2016 Unisonic Technologies Co., Ltd

QW-R103-051.C

H I GH PERFORM AN CE

CU RREN T M ODE PWM

CON T ROLLERS

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DESCRI PT I ON

The UTC UC2844/2845 are high performance fixed frequency

current mode controllers that specifically designed for Off-Line and

DC to DC converter applications with minimal external parts count.

The differences between UC2844 and UC2845 are the

maximum duty cycle ranges and under-voltage lockout thresholds.

The UC2844 ideally suited to off-line applications with UVLO

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FEAT U RES

* Operation output switching frequency up to 500 kHz

* Output deadtime adjustable from 50% to 70%

* Automatic feed forward compensation

* Latching PWM for cycle-by-cycle current limiting

* High current totem pole output

* Internally trimmed reference with under voltage lockout

* UVLO with hysteresis

* Low startup and operating current

SOP-8

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ORDERI N G I N FORM AT I ON

Ordering Number

Package

Packing

UC2844G-S08-R

SOP-8

Tape Reel

UC2845G-S08-R

SOP-8

Tape Reel

(1) R: Tape Reel

(2) S08: SOP-8

(3) G: Halogen Free and Lead Free

UC2844G-S08-R

(1)Packing Type

(2)Package Type

(3)Green Package

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M ARK I N G

UC2844

UC2845