L3383 Datasheet, PDF (1/14 Pages) Unisonic Technologies – PFM CONTROLLED, STEP-UP DC/DC CONVERTERS (VARIABLE DUTY RATIO)

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 V_DD
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 V_OUT 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:V_IN O:V_OUT G:GND N: No Connection E: Chip Enable
xx: Output Voltage, refer to Marking Information.
L3383L-xx-AB3-R
(1)Packing Type
(1) R: Tape Reel
(2)Package Type
(2) AB3: SOT-89, AF5: SOT-25
(3)Output Voltage Code (3) xx: refer to Marking Information
(4)Lead Plating
(4) L: Lead Free Plating, Blank: Pb/Sn


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