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L3383-36-AB3-R

PFM CONTROLLED, STEP-UP DC/DC CONVERTERS (VARIABLE DUTY RATIO)

Unisonic Technologies 

UNISONIC TECHNOLOGIES CO., LTD

L3383

CMOS IC

PFM CONTROLLED, STEP-UP

DC/DC CONVERTERS

(VARIABLE DUTY RATIO)

DESCRIPTION

The UTC L3383 Series are PFM step-up DC/DC switching

converter. The UTC L3383 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 reduces power consumption during shut-down mode, or a VDD

pin function (separated power and voltage detect pins).

FEATURES

* 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

* 5-lead package offer Chip Enable or independent VOUT pin option.

1

2

3

5

4

SOT-25

1

SOT-89

*Pb-free plating product number: L3383L

ORDERING INFORMATION

Order Number

Normal

Lead Free Plating

Package

Pin Assignment

123 4 5

Packing

L3383-xx-AB3-R

L3383L-xx-AB3-R

SOT-89 G O I - - Tape Reel

L3383-xx-AF5-R

L3383L-xx-AF5-R

SOT-25 E O N G I Tape Reel

Note: Pin Assignment: I:VIN O:VOUT G:GND N: No Connection E: Chip Enable

xx: Output Voltage, refer to Marking Information.

L3383L-xx-AB3-R

(1)Packing Type

(2)Package Type

(3)Output Voltage Code

(4)Lead Plating

(1) R: Tape Reel

(2) AB3: SOT-89, AF5: SOT-25

(3) xx: refer to Marking Information

(4) L: Lead Free Plating, Blank: Pb/Sn

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Copyright © 2005 Unisonic Technologies Co., Ltd.

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