Datasheet LTC3614 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | 4A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter |
| Seiten / Seite | 30 / 5 — Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN unless … |
| Dateiformat / Größe | PDF / 808 Kb |
| Dokumentensprache | Englisch |
Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN unless otherwise noted. Efficiency vs Load Current
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LTC3614
Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Burst Mode Operation (VMODE = 0V) Burst Mode Operation (VMODE = 0V) Efficiency vs Load Current
100 100 100 VOUT = 1.8V VOUT = 1.2V VOUT = 1.8V 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 20 20 VIN = 2.5V VIN = 2.5V Burst Mode OPERATION 10 VIN = 3.3V 10 VIN = 3.3V 10 PULSE-SKIPPING V V FORCED CONTINUOUS 0 IN = 5V 0 IN = 5V 0 1 10 100 1000 10000 1 10 100 1000 10000 1 10 100 1000 10000 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3614 G01 3614 G02 3614 G03
Efficiency vs Input Voltage Efficiency vs Frequency Burst Mode Operation Burst Mode Operation Load Regulation (VMODE = 0V) (VMODE = 0V), IOUT = 2A (VOUT = 1.8V)
100 95 1.5 VOUT = 1.8V VIN = 3.3V FORCED CONTINUOUS MODE 94 VOUT = 1.8V 1.3 PULSE-SKIPPING MODE 90 93 INTERNAL Burst Mode OPERATION 92 1.1 80 91 0.9 90 70 0.7 89 88 60 ERROR (%) 0.5 87 EFFICIENCY (%) EFFICIENCY (%) V OUT 0.3 50 86 85 0.1 I 150nH 40 OUT = 6mA 84 IOUT = 600mA 330nH –0.1 I 83 OUT = 2A 470nH 30 82 –0.3 2.5 3 3.5 4 4.5 5 5.5 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 1000 2000 3000 4000 INPUT VOLTAGE (V) FREQUENCY (MHz) OUTPUT CURRENT (mA) 3614 G04 3614 G05 3614 G06
Line Regulation Burst Mode Operation Pulse-Skipping Mode Operation
0.3 0.2 V V 0.1 OUT OUT 20mV/DIV 20mV/DIV 0 ERROR (%) V OUT –0.1 –0.2 I I L L 1A/DIV 1A/DIV –0.32.20 2.75 3.30 3.85 4.40 4.95 5.50 20µs/DIV 3614 G08 VOUT = 1.8V 20µs/DIV 3614 G09 VOUT = 1.8V INPUT VOLTAGE (V) IOUT = 150mA IOUT = 150mA VMODE = 0V VMODE = 3.3V 3614 G07 3614fc For more information www.linear.com/LTC3614 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Applications Information Package Description Typical Application Related Parts
Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Burst Mode Operation (VMODE = 0V) Burst Mode Operation (VMODE = 0V) Efficiency vs Load Current
100 100 100 VOUT = 1.8V VOUT = 1.2V VOUT = 1.8V 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 20 20 VIN = 2.5V VIN = 2.5V Burst Mode OPERATION 10 VIN = 3.3V 10 VIN = 3.3V 10 PULSE-SKIPPING V V FORCED CONTINUOUS 0 IN = 5V 0 IN = 5V 0 1 10 100 1000 10000 1 10 100 1000 10000 1 10 100 1000 10000 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3614 G01 3614 G02 3614 G03
Efficiency vs Input Voltage Efficiency vs Frequency Burst Mode Operation Burst Mode Operation Load Regulation (VMODE = 0V) (VMODE = 0V), IOUT = 2A (VOUT = 1.8V)
100 95 1.5 VOUT = 1.8V VIN = 3.3V FORCED CONTINUOUS MODE 94 VOUT = 1.8V 1.3 PULSE-SKIPPING MODE 90 93 INTERNAL Burst Mode OPERATION 92 1.1 80 91 0.9 90 70 0.7 89 88 60 ERROR (%) 0.5 87 EFFICIENCY (%) EFFICIENCY (%) V OUT 0.3 50 86 85 0.1 I 150nH 40 OUT = 6mA 84 IOUT = 600mA 330nH –0.1 I 83 OUT = 2A 470nH 30 82 –0.3 2.5 3 3.5 4 4.5 5 5.5 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 1000 2000 3000 4000 INPUT VOLTAGE (V) FREQUENCY (MHz) OUTPUT CURRENT (mA) 3614 G04 3614 G05 3614 G06
Line Regulation Burst Mode Operation Pulse-Skipping Mode Operation
0.3 0.2 V V 0.1 OUT OUT 20mV/DIV 20mV/DIV 0 ERROR (%) V OUT –0.1 –0.2 I I L L 1A/DIV 1A/DIV –0.32.20 2.75 3.30 3.85 4.40 4.95 5.50 20µs/DIV 3614 G08 VOUT = 1.8V 20µs/DIV 3614 G09 VOUT = 1.8V INPUT VOLTAGE (V) IOUT = 150mA IOUT = 150mA VMODE = 0V VMODE = 3.3V 3614 G07 3614fc For more information www.linear.com/LTC3614 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Applications Information Package Description Typical Application Related Parts