Datasheet LT1083, LT1084, LT1085 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | 7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators |
| Pages / Page | 22 / 9 — Typical perForMance characTerisTics. LT1085. Ripple Rejection. Ripple … |
| File Format / Size | PDF / 293 Kb |
| Document Language | English |
Typical perForMance characTerisTics. LT1085. Ripple Rejection. Ripple Rejection vs Current. Maximum Power Dissipation*. LT1083
Model Line for this Datasheet
Text Version of Document
LT1083/LT1084/LT1085
Typical perForMance characTerisTics LT1085 LT1085 LT1085 Ripple Rejection Ripple Rejection vs Current Maximum Power Dissipation*
100 100 50 VRIPPLE ≤ 3VP-P VRIPPLE 90 ≤ 0.5VP-P 90 80 (V 80 f 40 IN – VOUT) ≥ 3V R = 120Hz 70 V 70 RIPPLE ≤ 3VP-P LT1085MK 60 60 30 (VIN – VOUT) ≥ VDROPOUT fR = 20kHz 50 50 VRIPPLE ≤ 0.5VP-P 40 40 POWER (W) 20 30 LT1085CT 30 RIPPLE REJECTION (dB) RIPPLE REJECTION (dB) 20 CADJ = 200µF AT FREQUENCIES < 60Hz 20 VOUT = 5V 10 C C 10 ADJ = 25µF AT FREQUENCIES > 60Hz ADJ = 25µF I LT1085CK OUT = 3A 10 COUT = 25µF 0 0 0 10 100 1k 10k 100k 0 0.5 1.0 1.5 2.0 2.5 3.0 50 60 70 80 90 100 110 120 130 140 150 FREQUENCY (Hz) OUTPUT CURRENT (A) CASE TEMPERATURE (°C) 1083/4/5 ADJ G19 * AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE 1083/4/5 ADJ G20 LT1083/4/5 ADJ G21
LT1083 LT1084 LT1085 Load Transient Response Load Transient Response Load Transient Response
0.6 0.6 0.3 0.4 0.4 CADJ = 0 0.2 CADJ = 0 C 0.2 ADJ = 0 CADJ = 1µF 0.2 CADJ = 1µF 0.1 CADJ = 1µF 0 0 0 DEVIATION (V) –0.2 –0.2 –0.1 OUTPUT VOLTAGE CIN = 1µF DEVIATION (V) DEVIATION (V) C OUTPUT VOLTAGE CIN = 1µF OUTPUT VOLTAGE –0.4 OUT = 10µF TANTALUM –0.4 –0.2 CIN = 1µF COUT = 10µF TANTALUM COUT = 10µF TANTALUM 8 –0.6 –0.3 VOUT=10V 6 V 6 3 IN=13V 4 PRELOAD=100mA 4 VOUT=10V 2 VOUT=10V V V IN=13V IN=13V 2 2 PRELOAD=100mA 1 PRELOAD=100mA LOAD CURRENT (A) 0 0 LOAD CURRENT (A) LOAD CURRENT (A) 0 0 50 100 0 50 100 0 50 100 TIME (µs) TIME (µs) TIME (µs) 1083/4/5 ADJ G22 1083/4/5 ADJ G23 1083/4/5 ADJ G24
LT1083 LT1084 LT1085 Line Transient Response Line Transient Response Line Transient Response
150 60 60 100 CADJ = 0 40 CADJ = 0 40 CADJ = 0 50 CADJ = 1µF 20 CADJ = 1µF 20 CADJ = 1µF 0 0 0 –50 –20 –20 OUTPUT VOLTAGE DEVIATION (mV) OUTPUT VOLTAGE DEVIATION (mV) –100 –40 OUTPUT VOLTAGE DEVIATION (mV) –40 VOUT = 10V V V –150 –60 OUT = 10V OUT = 10V IIN = 0.2A I –60 IN = 0.2A IIN = 0.2A 14 CIN = 1µF TANTALUM 14 CIN = 1µF TANTALUM 14 CIN = 1µF TANTALUM COUT = 10µF TANTALUM COUT = 10µF TANTALUM COUT = 10µF TANTALUM 13 13 13 INPUT 12 INPUT 12 INPUT 12 DEVIATION (V) DEVIATION (V) DEVIATION (V) 0 100 200 0 100 200 0 100 200 TIME (µs) TIME (µs) TIME (µs) 1083/4/5 ADJ G25 1083/4/5 ADJ G26 1083/4/5 ADJ G27 108345fh For more information www.linear.com/LT1083 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Applications Information Typical Application Package Description Revision History Typical Applications Related Parts
Typical perForMance characTerisTics LT1085 LT1085 LT1085 Ripple Rejection Ripple Rejection vs Current Maximum Power Dissipation*
100 100 50 VRIPPLE ≤ 3VP-P VRIPPLE 90 ≤ 0.5VP-P 90 80 (V 80 f 40 IN – VOUT) ≥ 3V R = 120Hz 70 V 70 RIPPLE ≤ 3VP-P LT1085MK 60 60 30 (VIN – VOUT) ≥ VDROPOUT fR = 20kHz 50 50 VRIPPLE ≤ 0.5VP-P 40 40 POWER (W) 20 30 LT1085CT 30 RIPPLE REJECTION (dB) RIPPLE REJECTION (dB) 20 CADJ = 200µF AT FREQUENCIES < 60Hz 20 VOUT = 5V 10 C C 10 ADJ = 25µF AT FREQUENCIES > 60Hz ADJ = 25µF I LT1085CK OUT = 3A 10 COUT = 25µF 0 0 0 10 100 1k 10k 100k 0 0.5 1.0 1.5 2.0 2.5 3.0 50 60 70 80 90 100 110 120 130 140 150 FREQUENCY (Hz) OUTPUT CURRENT (A) CASE TEMPERATURE (°C) 1083/4/5 ADJ G19 * AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE 1083/4/5 ADJ G20 LT1083/4/5 ADJ G21
LT1083 LT1084 LT1085 Load Transient Response Load Transient Response Load Transient Response
0.6 0.6 0.3 0.4 0.4 CADJ = 0 0.2 CADJ = 0 C 0.2 ADJ = 0 CADJ = 1µF 0.2 CADJ = 1µF 0.1 CADJ = 1µF 0 0 0 DEVIATION (V) –0.2 –0.2 –0.1 OUTPUT VOLTAGE CIN = 1µF DEVIATION (V) DEVIATION (V) C OUTPUT VOLTAGE CIN = 1µF OUTPUT VOLTAGE –0.4 OUT = 10µF TANTALUM –0.4 –0.2 CIN = 1µF COUT = 10µF TANTALUM COUT = 10µF TANTALUM 8 –0.6 –0.3 VOUT=10V 6 V 6 3 IN=13V 4 PRELOAD=100mA 4 VOUT=10V 2 VOUT=10V V V IN=13V IN=13V 2 2 PRELOAD=100mA 1 PRELOAD=100mA LOAD CURRENT (A) 0 0 LOAD CURRENT (A) LOAD CURRENT (A) 0 0 50 100 0 50 100 0 50 100 TIME (µs) TIME (µs) TIME (µs) 1083/4/5 ADJ G22 1083/4/5 ADJ G23 1083/4/5 ADJ G24
LT1083 LT1084 LT1085 Line Transient Response Line Transient Response Line Transient Response
150 60 60 100 CADJ = 0 40 CADJ = 0 40 CADJ = 0 50 CADJ = 1µF 20 CADJ = 1µF 20 CADJ = 1µF 0 0 0 –50 –20 –20 OUTPUT VOLTAGE DEVIATION (mV) OUTPUT VOLTAGE DEVIATION (mV) –100 –40 OUTPUT VOLTAGE DEVIATION (mV) –40 VOUT = 10V V V –150 –60 OUT = 10V OUT = 10V IIN = 0.2A I –60 IN = 0.2A IIN = 0.2A 14 CIN = 1µF TANTALUM 14 CIN = 1µF TANTALUM 14 CIN = 1µF TANTALUM COUT = 10µF TANTALUM COUT = 10µF TANTALUM COUT = 10µF TANTALUM 13 13 13 INPUT 12 INPUT 12 INPUT 12 DEVIATION (V) DEVIATION (V) DEVIATION (V) 0 100 200 0 100 200 0 100 200 TIME (µs) TIME (µs) TIME (µs) 1083/4/5 ADJ G25 1083/4/5 ADJ G26 1083/4/5 ADJ G27 108345fh For more information www.linear.com/LT1083 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Applications Information Typical Application Package Description Revision History Typical Applications Related Parts
