LR18115 Datasheet | Unisonic Technologies

DESCRIPTION The UTC LR18115 is a low output resistance 1.6X positive voltage linear fan driver with very low dropout voltage at up to 500m A. 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 .unisonic..tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 5 QW-R102-039.F - PIN CONFIGURATION FON 1 VIN 2 VOUT VSET 4 LINEAR INTEGRATED CIRCUIT 8 GND 7 GND 6 GND 5 GND - PIN DESCRIPTION PIN NO. 1 2 3 5~8 NAME FON VIN VOUT VSET 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. mon Ground. Use all four pins on SOP-8 device for heat sinking. - BLOCK DIAGRAM VOUT FULLY ON LOGIC THERMAL...