Datasheet LT3045-1 (Analog Devices) - 30

LT3045-1
TYPICAL APPLICATIONS Ultralow 1/f Noise Reference Buffer
VIN IN LT3045-1 6V ±5% 4.7µF 100µA – EN/UV + PGFB OUT VOUT = 5V IOUT(MAX) PG 500mA 1,2 6,7 OUTS LTC6655-5 VIOC SET GND ILIM 10µF 3,4,5 1k 30451 TA07 10µF 49.9k 4.7µF
Paralleling Multiple Devices Using ILIM (Current Monitor) to Cancel Ballast Resistor Drop
VIN IN LT3045-1 LT3045-1 IN 5V ±5% 10µF 100µA 100µA – – EN/UV VOUT = 3.3V EN/UV + IOUT(MAX) = 1A + PGFB PGFB OUT OUT PG 20mΩ PG OUTS 20mΩ OUTS VIOC SET GND ILIM 10µF 10µF ILIM GND SET VIOC RILIM 287Ω 287Ω 30451 TA08 1µF 16.5k N = NUMBER OF DEVICES IN PARALLEL RCDC RILIM = 150mA • kΩ/ILIM – RCDC • N RCDC = CABLE (BALLAST RESISTOR) DROP CANCELLATION RESISTOR 5Ω = 287Ω (FOR 500mA ILIM PER REGULATOR) RILIM = CURRENT LIMIT PROGRAMMING RESISTOR R R CDC = RBALLAST • 500/N BALLAST = BALLAST RESISTOR = 5Ω ILIM = OUTPUT CURRENT LIMIT 30451fa 30 For more information www.linear.com/LT3045-1 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