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LR18115

UNISONIC TECHNOLOGIES
Part Number LR18115
Manufacturer UNISONIC TECHNOLOGIES
Description 1.6X LINEAR FAN DRIVER
Published Jan 28, 2016
Detailed Description UNISONIC TECHNOLOGIES CO., LTD LR18115 LINEAR INTEGRATED CIRCUIT 1.6X LINEAR FAN DRIVER WITH VOUT FULLY ON CONTROL ...
Datasheet PDF File LR18115 PDF File

LR18115
LR18115

Overview
UNISONIC TECHNOLOGIES CO.
, LTD LR18115 LINEAR INTEGRATED CIRCUIT 1.
6X LINEAR FAN DRIVER WITH VOUT FULLY ON CONTROL  DESCRIPTION The UTC LR18115 is a low output resistance 1.
6X positive voltage linear fan driver with very low dropout voltage at up to 500mA.
The UTC LR18115 consists of an error amplifier, output stage, voltage divider, over temperature protection, current limiting scheme and Fully Control logic.
VOUT voltage follows the 1.
6 times of VSET voltage until it reaches VIN voltage.
The VSET voltage must be larger than 1V to guarantee VOUT 1.
6 times of VSET.
When given low, VOUT can be fully turned on by FON pin.
Good regulation over variation in line, load and temperature is also provided by UTC LR18115.
 FEATURES * VOUT Follows 1.
6 Times of VSET * 0.
3Ω Output Resistance @ 0.
5A * Over Temperature Protection * Current Limiting Protection * FON Pin to Turn VOUT Fully On  ORDERING INFORMATION Ordering Number LR18115G-S08-R Package SOP-8 Packing Tape Reel  MARKING www.
unisonic.
com.
tw Copyright © 2015 Unisonic Technologies Co.
, Ltd 1 of 5 QW-R102-039.
F LR18115  PIN CONFIGURATION FON 1 VIN 2 VOUT 3 VSET 4 LINEAR INTEGRATED CIRCUIT 8 GND 7 GND 6 GND 5 GND  PIN DESCRIPTION PIN NO.
1 2 3 4 5~8 NAME FON VIN VOUT VSET GND DESCRIPTION FON Input.
Pulling the regulator fully on when this pin below 0.
4V.
Internally pulled high.
Supply Input.
This pin is output voltage of regulator.
Its voltage is 1.
6 times of VSET.
This pin sets output voltage.
Its voltage must be larger than 1V to guarantee VOUT 1.
6 times of VSET.
Common Ground.
Use all four pins on SOP-8 device for heat sinking.
 BLOCK DIAGRAM VIN FON VOUT FULLY ON LOGIC THERMAL SHUTDOWN CURRENT LIMIT VSET R1=0.
6xR2 VOUT R1 R2 GND UNISONIC TECHNOLOGIES CO.
, LTD www.
unisonic.
com.
tw 2 of 5 QW-R102-039.
E LR18115 LINEAR INTEGRATED CIRCUIT  ABSOLUTE MAXIMUM RATING (TA＝25°C, unless otherwise specified ) PARAMETER SYMBOL RATINGS UNIT Supply Input Voltage VIN -0.
3 ~ +7 V FO...


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