UNI SONI C TECHNOLOGI ES CO., LTD

UC3383

CMOS IC

www.unisonic.com.tw

1 of 14

Copyright © 2018 Unisonic Technologies Co., Ltd.

QW-R502-032.L

PFM CON T ROLLED, ST EP-U P

DC/DC CON V ERT ERS

(V ARI ABLE DU T Y RAT I O)



DESCRI PT I ON

The UTC UC3383 Series are PFM step-up DC/DC switching converter.

The UTC UC3383 can support both large and small currents. It

automatically switches duty ratio (45%/75%) when it senses changes in

load.

Both built-in and external transistor types include 5-pin and 3-pin

packages, which are provided with either a CE (chip enable) function that

function (separated power and voltage detect pins).



FEAT U RES

* Output Voltage Range: 2.0V~7.0V in 0.1V Increments

* Operating (Start-up) Voltage Range: 0.9V~10V

* Highly Accurate: Set-up Voltage ±2.5%

* Maximum Oscillator Frequency (Max Fosc1): 180kHz (±15%)

* Variable Duty Ratio: 45%/75% (±5%)

* Both Switching Transistor Built-in and External Types are Available



RDERI N G I N FORM AT I ON

Ordering Number

Pin Assignment

Lead Free

Halogen Free

Package

1

2

3

4

5

Packing

UC3383L-xx-AB3-R

UC3383G-xx-AB3-R

SOT-89

Lx

-

-

Tape Reel

UC3383L-xx-AF5-R

UC3383G-xx-AF5-R

SOT-25

CE

NC

Lx

Tape Reel

Note:

Pin Assignment: NC: No Connection

CE: Chip Enable

xx: Output Voltage, refer to Marking Information.