LT3045 TYPICAL APPLICATIONS12VIN to 3.3VOUT with 0.8µVRMS Integrated Noise LT3045 V IN IN 12V ±5% 4.7µF 100µA – EN/UV 200k + VOUT OUT 3.3V PG IOUT OUTS 200mA SET GND ILIM PGFB 10µF 453k 750Ω 4.7µF 33.2k 49.9k 3045 TA02 Low Noise CC/CV Lab Power SupplyUltralow Noise Current Source for RF Biasing Applications IN LT3045 V LT3045 IN IN VIN 1.8V to 20V 4.7µF 100µA 100µA 4.7µF ROUT = R1 + RLOAD – EN/UV EN/UV + VOUT(MAX): 15V R1 I PGFB OUT OUT: 200mA 1Ω OUT PGFB VOUT PG OUTS OUTS PG 10µF SET GND ILIM 10µF SET GND ILIM RLOAD 4.7µF R 0.47µF R IOUT SET 3045 TA03 RSET 2k 3045 TA04 OUTPUT CURRENT NOISE = 0.8µV V RMS/ROUT OUT(MAX) = 100μA • RSET INCREASE R1 (AND RSET) TO REDUCE CURRENT NOISE IOUT(MAX) = 150mA • kΩ RIOUT Rev. B 24 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts