L3012

UNISONIC TECHNOLOGIES CO., LTD L3012 LINEAR INTEGRATED CIRCUIT 1A HIGH POWER LED DRIVER WITH 4.5~40V INPUT  DESCRIPTION The UTC L3012 is a step-down PWM control LED driver with a built-in power Switch. It achieves 1A continuous output current in 4.5~40V input voltage range. It has high efficiency up to more than 96%, with the excellent current accuracy within ±1%.  FEATURES * 4.5~40V input voltage range * Maximum 1A output current * 0.15Ω built-in power MOSFET * 280kHz fixed frequency * Excellent constant current accuracy ±1% * Thermal shutdown * Cycle-by-cycle over current protection * PWM dimming function  ORDERING INFORMATION Ordering Number L3012G-S08-R Package SOP-8 Packing Tape Reel L3012G-S08-R (1)Packing Type (2)Package Type (3)Green Package (1) R: Tape Reel (2) S08: SOP-8 (3) G: Halogen Free and Lead Free  MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 5 QW-R125-025.D L3012  PIN CONFIGURATION SW 1 GND 2 SENSE 3 VIN 4 LINEAR INTEGRATED CIRCUIT 8 ADJ 7 VDD 6 PWM 5 COMP  PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN NAME SW GND SENSE VIN COMP PWM VDD ADJ DESCRIPTION Power Switch output. Ground. Current sense pin. Input supply voltage. Compensation pin, connects to external capacitor. PWM dimming pin. 5V LDO output Thermal compensation pin or linear dimming pin.  BLOCK DIAGRAM VIN SENSE 43 COMP 5 VDD 7 ADJ 8 PWM 6 + - Current setting PWM Control Internal reference Osc OSC S Q Vsense + R Current compara...