Datasheet LTM4622A (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | Dual Ultrathin 2A or Single 4A Step-Down DC/DC μModule Regulator |
| Seiten / Seite | 30 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency vs Load Current. at 5VIN. … |
| Revision | B |
| Dateiformat / Größe | PDF / 878 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency vs Load Current. at 5VIN. at 12VIN. at 16VIN. Burst Mode Efficiency,
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LTM4622A
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current at 5VIN at 12VIN at 16VIN
100 100 100 95 95 95 90 90 90 85 85 85 80 80 80 75 75 75 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 12V OUTPUT, 1.5MHz 70 70 8V OUTPUT, 1.5MHz 70 8V OUTPUT, 1.5MHz 5V OUTPUT, 1.5MHz 5V OUTPUT, 1.5MHz 65 3.3V OUTPUT, 1MHz 65 3.3V OUTPUT, 1MHz 65 3.3V OUTPUT, 1MHz 1.5V OUTPUT, 1MHz 1.5V OUTPUT, 1MHz 1.5V OUTPUT, 1MHz 60 60 60 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4622A G01 4622A G02 4622A G03
Burst Mode Efficiency, 12VIN, 1.5VOUT 1.5V Output Transient Response 3.3V Output Transient Response
100 90 LOAD STEP LOAD STEP 80 1A/DIV 1A/DIV 70 60 VOUT VOUT 50 AC-COUPLED AC-COUPLED 50mV/DIV 50mV/DIV 40 EFFICIENCY (%) 30 20 50µs/DIV 4622A G05 50µs/DIV 4622A G06 10 Burst Mode OPERATION V CMM IN = 12V, VOUT = 1.5V, fSW = 1MHz VIN = 12V, VOUT = 3.3V, fSW = 1MHz 0 OUTPUT CAPACITOR = 47µF ×1 CERAMIC OUTPUT CAPACITOR = 47µF ×1 CERAMIC 0.001 0.01 0.1 1 10 10pF FEED-FORWARD CAPACITOR 10pF FEED-FORWARD CAPACITOR LOAD CURRENT (mA) LOAD-STEP = 1A TO 2A (10A/μs) LOAD-STEP = 1A TO 2A (10A/μs) 4622A G04
5V Output Transient Response 8V Output Transient Response 12V Output Transient Response
LOAD STEP LOAD STEP LOAD STEP 1A/DIV 1A/DIV 1A/DIV VOUT VOUT VOUT AC-COUPLED AC-COUPLED AC-COUPLED 100mV/DIV 100mV/DIV 100mV/DIV 50µs/DIV 4622A G07 50µs/DIV 4622A G08 50µs/DIV 4622A G09 VIN = 12V, VOUT = 5V, fSW = 1MHz VIN = 12V, VOUT = 8V, fSW = 1.5MHz VIN = 16V, VOUT = 12V, fSW = 1.5MHz OUTPUT CAPACITOR = 47µF ×2 CERAMIC OUTPUT CAPACITOR = 47µF ×2 CERAMIC OUTPUT CAPACITOR = 47µF ×2 CERAMIC 10pF FEED-FORWARD CAPACITOR 10pF FEED-FORWARD CAPACITOR 10pF FEED-FORWARD CAPACITOR LOAD-STEP = 1A TO 2A (10A/μs) LOAD-STEP = 1A TO 2A (10A/μs) LOAD-STEP = 1A TO 2A (10A/μs) Rev B For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Safety Considerations Layout Checklist/Example Package Description Package Photos Design Resources Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current at 5VIN at 12VIN at 16VIN
100 100 100 95 95 95 90 90 90 85 85 85 80 80 80 75 75 75 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 12V OUTPUT, 1.5MHz 70 70 8V OUTPUT, 1.5MHz 70 8V OUTPUT, 1.5MHz 5V OUTPUT, 1.5MHz 5V OUTPUT, 1.5MHz 65 3.3V OUTPUT, 1MHz 65 3.3V OUTPUT, 1MHz 65 3.3V OUTPUT, 1MHz 1.5V OUTPUT, 1MHz 1.5V OUTPUT, 1MHz 1.5V OUTPUT, 1MHz 60 60 60 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4622A G01 4622A G02 4622A G03
Burst Mode Efficiency, 12VIN, 1.5VOUT 1.5V Output Transient Response 3.3V Output Transient Response
100 90 LOAD STEP LOAD STEP 80 1A/DIV 1A/DIV 70 60 VOUT VOUT 50 AC-COUPLED AC-COUPLED 50mV/DIV 50mV/DIV 40 EFFICIENCY (%) 30 20 50µs/DIV 4622A G05 50µs/DIV 4622A G06 10 Burst Mode OPERATION V CMM IN = 12V, VOUT = 1.5V, fSW = 1MHz VIN = 12V, VOUT = 3.3V, fSW = 1MHz 0 OUTPUT CAPACITOR = 47µF ×1 CERAMIC OUTPUT CAPACITOR = 47µF ×1 CERAMIC 0.001 0.01 0.1 1 10 10pF FEED-FORWARD CAPACITOR 10pF FEED-FORWARD CAPACITOR LOAD CURRENT (mA) LOAD-STEP = 1A TO 2A (10A/μs) LOAD-STEP = 1A TO 2A (10A/μs) 4622A G04
5V Output Transient Response 8V Output Transient Response 12V Output Transient Response
LOAD STEP LOAD STEP LOAD STEP 1A/DIV 1A/DIV 1A/DIV VOUT VOUT VOUT AC-COUPLED AC-COUPLED AC-COUPLED 100mV/DIV 100mV/DIV 100mV/DIV 50µs/DIV 4622A G07 50µs/DIV 4622A G08 50µs/DIV 4622A G09 VIN = 12V, VOUT = 5V, fSW = 1MHz VIN = 12V, VOUT = 8V, fSW = 1.5MHz VIN = 16V, VOUT = 12V, fSW = 1.5MHz OUTPUT CAPACITOR = 47µF ×2 CERAMIC OUTPUT CAPACITOR = 47µF ×2 CERAMIC OUTPUT CAPACITOR = 47µF ×2 CERAMIC 10pF FEED-FORWARD CAPACITOR 10pF FEED-FORWARD CAPACITOR 10pF FEED-FORWARD CAPACITOR LOAD-STEP = 1A TO 2A (10A/μs) LOAD-STEP = 1A TO 2A (10A/μs) LOAD-STEP = 1A TO 2A (10A/μs) Rev B For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Safety Considerations Layout Checklist/Example Package Description Package Photos Design Resources Related Parts