Datasheet LTC3605 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 15V, 5A Synchronous Step-Down Regulator |
| Pages / Page | 22 / 4 — Typical perForMance characTerisTics TA = 25°C unless otherwise specified. … |
| File Format / Size | PDF / 341 Kb |
| Document Language | English |
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Quiescent Current vs VIN. Shutdown Current vs VIN
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LTC3605
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Quiescent Current vs VIN Shutdown Current vs VIN IINTVCC Current vs Frequency
2.18 14 25 MODE = 0V MODE = 3.3V 2.16 NO LOAD 13 NO LOAD 2.14 20 12 2.12 11 15 2.10 (mA) 10 2.08 9 I INTVCC 10 2.06 QUIESCENT CURRENT (mA) 2.04 SHUTDOWN CURRENT (µA) 8 5 2.02 7 2.00 6 0 0 3 6 9 12 15 0 3 6 9 12 15 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 VIN (V) VIN (V) FREQUENCY (MHz) 3605 G01 3605 G02 3605 G03
Load Step RDS(ON) vs Temperature Load Regulation (External ITH Compensation)
120 1.5 V V IN = 12V OUT V 50mV/DIV OUT = 1.2V 100 1.0 INTERNAL ITH f = 1MHz AC-COUPLED COMPENSATION TOP FET MODE = INTVCC (ITH = 3.3V) I 80 0.5 OUT 5A/DIV (mΩ) 60 0 BOTTOM FET R DS(ON) IL 40 NORMALIZED (%) –0.5 EXTERNAL ITH 5A/DIV COMPENSATION 20 –1.0 VIN = 12V 20µs/DIV 3605 G06 VOUT = 1.2V I 0 OUT = 0A TO 5A –1.5 –45 –20 5 30 55 80 105 130 0 1 2 3 4 5 6 7 TEMPERATURE (°C) IOUT (A) 3605 G04 3605 G05
Load Step (Internal ITH Compensation) Output Tracking Switching Frequency vs RT
4.5 4.0 3.5 VOUT 3.0 50mV/DIV VTRACK AC-COUPLED 2.5 VFB 2.0 IOUT 5A/DIV FREQUENCY (MHz) 1.5 1.0 VIN = 12V 20µs/DIV 3605 G07 VIN = 12V 500µs/DIV 3605 G08 V V 0.5 OUT = 3.3V OUT = 1.2V ITH = 3.3V 0 IOUT = 0A TO 5A 0 50 100 150 200 250 300 350 400 450 500 RT (kΩ) 3605 G09 3605fh 4 For more information www.linear.com/LTC3605 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Quiescent Current vs VIN Shutdown Current vs VIN IINTVCC Current vs Frequency
2.18 14 25 MODE = 0V MODE = 3.3V 2.16 NO LOAD 13 NO LOAD 2.14 20 12 2.12 11 15 2.10 (mA) 10 2.08 9 I INTVCC 10 2.06 QUIESCENT CURRENT (mA) 2.04 SHUTDOWN CURRENT (µA) 8 5 2.02 7 2.00 6 0 0 3 6 9 12 15 0 3 6 9 12 15 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 VIN (V) VIN (V) FREQUENCY (MHz) 3605 G01 3605 G02 3605 G03
Load Step RDS(ON) vs Temperature Load Regulation (External ITH Compensation)
120 1.5 V V IN = 12V OUT V 50mV/DIV OUT = 1.2V 100 1.0 INTERNAL ITH f = 1MHz AC-COUPLED COMPENSATION TOP FET MODE = INTVCC (ITH = 3.3V) I 80 0.5 OUT 5A/DIV (mΩ) 60 0 BOTTOM FET R DS(ON) IL 40 NORMALIZED (%) –0.5 EXTERNAL ITH 5A/DIV COMPENSATION 20 –1.0 VIN = 12V 20µs/DIV 3605 G06 VOUT = 1.2V I 0 OUT = 0A TO 5A –1.5 –45 –20 5 30 55 80 105 130 0 1 2 3 4 5 6 7 TEMPERATURE (°C) IOUT (A) 3605 G04 3605 G05
Load Step (Internal ITH Compensation) Output Tracking Switching Frequency vs RT
4.5 4.0 3.5 VOUT 3.0 50mV/DIV VTRACK AC-COUPLED 2.5 VFB 2.0 IOUT 5A/DIV FREQUENCY (MHz) 1.5 1.0 VIN = 12V 20µs/DIV 3605 G07 VIN = 12V 500µs/DIV 3605 G08 V V 0.5 OUT = 3.3V OUT = 1.2V ITH = 3.3V 0 IOUT = 0A TO 5A 0 50 100 150 200 250 300 350 400 450 500 RT (kΩ) 3605 G09 3605fh 4 For more information www.linear.com/LTC3605 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts
