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L3383 Datasheet(PDF) 1 Page - Unisonic Technologies |
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L3383 Datasheet(HTML) 1 Page - Unisonic Technologies |
1 / 14 page UNISONIC TECHNOLOGIES CO., LTD L3383 CMOS IC www.unisonic.com.tw 1 of 14 Copyright © 2005 Unisonic Technologies Co., Ltd. QW-R502-032,E 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 SOT-89 SOT-25 4 5 3 2 1 *Pb-free plating product number: L3383L ORDERING INFORMATION Order Number Pin Assignment Normal Lead Free Plating Package 12 3 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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