Datasheet LT3083 (Analog Devices) - 8

LT3083
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Ripple Rejection, Dual Supply, Ripple Rejection, Dual Supply, Ripple Rejection, Single Supply VCONTROL Pin IN Pin
100 120 120 I 90 LOAD = 0.1A I 105 105 LOAD = 0.1A 80 I 90 I LOAD = 0.5A LOAD = 0.1A 90 70 60 75 75 ILOAD = 1.5A 50 I 60 60 LOAD = 0.5A ILOAD = 1.5A 40 I 45 45 LOAD = 1.5A 30 RIPPLE REJECTION (dB) C RIPPLE REJECTION (dB) 30 C RIPPLE REJECTION (dB) 30 C 20 OUT = 10µF CERAMIC OUT = 10µF CERAMIC OUT = 10µF CERAMIC CSET = 0.1µF CERAMIC CSET = 0.1µF CSET = 0.1µF 10 RIPPLE = 50mVP-P 15 VIN = VOUT(NOMINAL) + 1V 15 VIN = VOUT(NOMINAL) + 1V VIN – VCONTROL = VOUT(NOMINAL) + 2V VCONTROL = VOUT(NOMINAL) + 2V VCONTROL = VOUT(NOMINAL) + 2V 0 0 0 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) 3083 G25 3083 G26 3083 G27
Ripple Rejection (120Hz) Noise Spectral Density
80 1000 100 79 SPECTRAL DENSITY (pA/√ 78 ) REFERENCE CURRENT NOISE Hz 77 76 75 100 10 74 73 RIPPLE REJECTOIN (dB) V Hz IN = VCONTROL = VOUT(NOMINAL) + 2V ERROR AMPLIFIER NOISE 72 ) RIPPLE = 500mV SPECTRAL DENSITY (nV/√ P-P, ƒ = 120Hz 71 ILOAD = 0.5A CSET = 0.1µF, COUT = 10µF 70 10 1 –50 –25 0 25 50 75 100 125 150 10 100 1k 10k 100k TEMPERATURE (°C) FREQUENCY (Hz) 3083 G28 3083 G29
Output Voltage Noise Error Amplifier Gain and Phase
21 36 18 0 PHASE 15 –36 12 –72 9 –108 6 –144 VOUT 100µV/DIV 3 –180 GAIN (dB) 0 –216 GAIN –3 –252 –6 –288 –9 ILOAD = 0.5A –324 I –12 LOAD = 1.5A –360 ILOAD = 3A –15 –396 3083 G30 TIME 1ms/DIV 10 100 1k 10k 100k 1M VOUT = 1V, RSET = 20k FREQUENCY (Hz) CSET = 0.1µF, COUT = 10µF I 3083 G31 LOAD = 3A Rev. B 8 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts