Datasheet LTC3633 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Dual Channel 3A, 15V Monolithic Synchronous Step-Down Regulator |
| Pages / Page | 28 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. TJ = 25°C, VIN = 12V, fSW = 1MHz, L … |
| File Format / Size | PDF / 411 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. TJ = 25°C, VIN = 12V, fSW = 1MHz, L = 1µH unless. otherwise noted
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LTC3633
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, VIN = 12V, fSW = 1MHz, L = 1µH unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Forced Continuous Mode Burst Mode Operation Operation Efficiency vs Load Current
100 100 100 VOUT = 1.8V VOUT = 1.8V Burst Mode 90 90 90 OPERATION 80 80 80 FORCED 70 70 70 CONTINUOUS OPERATION 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 VIN = 4V 20 VIN = 4V 20 10 VIN = 8V VIN = 8V V V 10 10 OUT = 5V IN = 12V VIN = 12V VOUT = 3.3V 0 0 0 1 10 100 1000 10000 1 10 100 1000 10000 1 10 100 1000 10000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3633 G01 3633 G02 3633 G03
Efficiency vs Input Voltage Reference Voltage Efficiency vs Load Current Burst Mode Operation vs Temperature
100 100 0.605 VOUT = 1.2V VOUT = 1.8V 90 95 80 0.603 90 70 85 60 0.601 50 80 (V) V FB 40 0.599 EFFICIENCY (%) EFFICIENCY (%) 75 30 V 70 I IN = 4V LOAD = 10mA 20 V I 0.597 IN = 8V LOAD = 100mA V 65 I IN = 12V LOAD = 1A 10 V I IN = 15V LOAD = 3A 0 60 0.595 0.1 1 10 100 1000 10000 4 6 8 10 12 14 16 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) INPUT VOLTAGE (V) TEMPERATURE (°C) 3633 G04 3633 G05 3633 G06
Oscillator Frequency Oscillator Internal Set Frequency Load Regulation vs Temperature vs Temperature
1.6 10 2.6 Burst Mode OPERATION RT = INTVCC FORCED CONTINUOUS 8 2.4 1.2 6 4 2.2 (%) 0.8 2 OUT/V 0 2.0 OUT 0.4 –2 ∆V 1.8 –4 FREQUENCY (MHz) 0.0 FREQUENCY VARIATION (%) –6 1.6 –8 –0.4 –10 1.4 0 0.5 1 1.5 2 2.5 3 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 ILOAD (A) TEMPERATURE (°C) TEMPERATURE (°C) 3633 G07 3633 G08 3633 G09 3633fd For more information www.linear.com/LTC3633 5 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 Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, VIN = 12V, fSW = 1MHz, L = 1µH unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Forced Continuous Mode Burst Mode Operation Operation Efficiency vs Load Current
100 100 100 VOUT = 1.8V VOUT = 1.8V Burst Mode 90 90 90 OPERATION 80 80 80 FORCED 70 70 70 CONTINUOUS OPERATION 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 VIN = 4V 20 VIN = 4V 20 10 VIN = 8V VIN = 8V V V 10 10 OUT = 5V IN = 12V VIN = 12V VOUT = 3.3V 0 0 0 1 10 100 1000 10000 1 10 100 1000 10000 1 10 100 1000 10000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3633 G01 3633 G02 3633 G03
Efficiency vs Input Voltage Reference Voltage Efficiency vs Load Current Burst Mode Operation vs Temperature
100 100 0.605 VOUT = 1.2V VOUT = 1.8V 90 95 80 0.603 90 70 85 60 0.601 50 80 (V) V FB 40 0.599 EFFICIENCY (%) EFFICIENCY (%) 75 30 V 70 I IN = 4V LOAD = 10mA 20 V I 0.597 IN = 8V LOAD = 100mA V 65 I IN = 12V LOAD = 1A 10 V I IN = 15V LOAD = 3A 0 60 0.595 0.1 1 10 100 1000 10000 4 6 8 10 12 14 16 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) INPUT VOLTAGE (V) TEMPERATURE (°C) 3633 G04 3633 G05 3633 G06
Oscillator Frequency Oscillator Internal Set Frequency Load Regulation vs Temperature vs Temperature
1.6 10 2.6 Burst Mode OPERATION RT = INTVCC FORCED CONTINUOUS 8 2.4 1.2 6 4 2.2 (%) 0.8 2 OUT/V 0 2.0 OUT 0.4 –2 ∆V 1.8 –4 FREQUENCY (MHz) 0.0 FREQUENCY VARIATION (%) –6 1.6 –8 –0.4 –10 1.4 0 0.5 1 1.5 2 2.5 3 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 ILOAD (A) TEMPERATURE (°C) TEMPERATURE (°C) 3633 G07 3633 G08 3633 G09 3633fd For more information www.linear.com/LTC3633 5 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 Typical Application Related Parts
