Datasheet LTC3539, LTC3539-2 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters |
| Pages / Page | 14 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted). … |
| File Format / Size | PDF / 194 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted). Efficiency vs Load Current and. VIN, VOUT = 5V
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LTC3539/LTC3539-2
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted) Efficiency vs Load Current and VIN, VOUT = 5V No Load Input Current vs VIN Maximum Output Current vs VIN
100 1000 200 2000 V L = 2.2µH OUT = 1.8V 90 180 V 1800 OUT = 2.5V 80 160 VOUT = 3.3V 1600 V 100 OUT = 5V POWER LOSS (mW) 70 EFFICIENCY 140 1400 60 120 1200 50 10 100 (mA) 1000 I OUT 40 POWER LOSS 80 800 EFFICIENCY (%) 30 60 600 INPUT CURRENT (µA) 1 V 20 40 400 OUT = 1.8V V V IN = 2.4V OUT = 2.5V 10 VIN = 3.6V 20 200 VOUT = 3.3V V V IN = 4.2V OUT = 5V 0 0.1 0 0 0.1 1 10 100 1000 0 1 2 3 4 5 0.7 1.1 1.5 1.9 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 LOAD CURRENT (mA) VIN (V) VIN (V) 3539 G03 3539 G04 3539 G05
Minimum Load Resistance During Burst Mode Threshold Current Burst Mode Threshold Current Start-Up vs VIN vs VIN; VOUT = 1.8V vs VIN; VOUT = 2.5V
10000 50 50 VOUT = 3.3V COUT = 44µF fSW = 1MHz COUT = 44µF 45 45 40 40 1000 35 35 fSW = 1MHz 30 LEAVE BURST 30 ANCE (Ω) LEAVE BURST 100 25 25 20 20 fSW = 2MHz LOAD RESIST LOAD CURRENT (mA) 15 f LOAD CURRENT (mA) 15 10 SW = 2MHz 10 10 ENTER BURST ENTER BURST 5 5 0.1 0 0 0.65 0.75 0.85 0.95 1.05 1.15 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 VIN (V) VIN (V) VIN (V) 3539 G06 3539 G07a 3539 G07b
Burst Mode Threshold Current Burst Mode Threshold Current vs V vs V Normalized Current Limit vs V IN; VOUT = 3.3V IN; VOUT = 5V OUT
60 100 1.10 COUT = 44µF COUT = 44µF 90 50 1.05 80 70 40 1.00 LEAVE BURST 60 fSW = 1MHz 30 50 0.95 fSW = 1MHz fSW = 2MHz LEAVE BURST 40 20 0.90 LOAD CURRENT (mA) LOAD CURRENT (mA) 30 ENTER BURST f 10 20 SW = 2MHz NORMALIZED CURRENT LIMIT (A) 0.85 10 ENTER BURST 0 0 0.80 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 0.7 1.1 1.5 1.9 2.3 2.7 3.1 3.5 3.9 4.3 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 V V V IN (V) IN (V) OUT (V) 3539 G07c 3539 G07d 3539 G08 35392fc 4 For more information www.linear.com/3539/3539-2 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted) Efficiency vs Load Current and VIN, VOUT = 5V No Load Input Current vs VIN Maximum Output Current vs VIN
100 1000 200 2000 V L = 2.2µH OUT = 1.8V 90 180 V 1800 OUT = 2.5V 80 160 VOUT = 3.3V 1600 V 100 OUT = 5V POWER LOSS (mW) 70 EFFICIENCY 140 1400 60 120 1200 50 10 100 (mA) 1000 I OUT 40 POWER LOSS 80 800 EFFICIENCY (%) 30 60 600 INPUT CURRENT (µA) 1 V 20 40 400 OUT = 1.8V V V IN = 2.4V OUT = 2.5V 10 VIN = 3.6V 20 200 VOUT = 3.3V V V IN = 4.2V OUT = 5V 0 0.1 0 0 0.1 1 10 100 1000 0 1 2 3 4 5 0.7 1.1 1.5 1.9 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 LOAD CURRENT (mA) VIN (V) VIN (V) 3539 G03 3539 G04 3539 G05
Minimum Load Resistance During Burst Mode Threshold Current Burst Mode Threshold Current Start-Up vs VIN vs VIN; VOUT = 1.8V vs VIN; VOUT = 2.5V
10000 50 50 VOUT = 3.3V COUT = 44µF fSW = 1MHz COUT = 44µF 45 45 40 40 1000 35 35 fSW = 1MHz 30 LEAVE BURST 30 ANCE (Ω) LEAVE BURST 100 25 25 20 20 fSW = 2MHz LOAD RESIST LOAD CURRENT (mA) 15 f LOAD CURRENT (mA) 15 10 SW = 2MHz 10 10 ENTER BURST ENTER BURST 5 5 0.1 0 0 0.65 0.75 0.85 0.95 1.05 1.15 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 VIN (V) VIN (V) VIN (V) 3539 G06 3539 G07a 3539 G07b
Burst Mode Threshold Current Burst Mode Threshold Current vs V vs V Normalized Current Limit vs V IN; VOUT = 3.3V IN; VOUT = 5V OUT
60 100 1.10 COUT = 44µF COUT = 44µF 90 50 1.05 80 70 40 1.00 LEAVE BURST 60 fSW = 1MHz 30 50 0.95 fSW = 1MHz fSW = 2MHz LEAVE BURST 40 20 0.90 LOAD CURRENT (mA) LOAD CURRENT (mA) 30 ENTER BURST f 10 20 SW = 2MHz NORMALIZED CURRENT LIMIT (A) 0.85 10 ENTER BURST 0 0 0.80 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 0.7 1.1 1.5 1.9 2.3 2.7 3.1 3.5 3.9 4.3 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 V V V IN (V) IN (V) OUT (V) 3539 G07c 3539 G07d 3539 G08 35392fc 4 For more information www.linear.com/3539/3539-2 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts
