Datasheet LTC3633 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Dual Channel 3A, 15V Monolithic Synchronous Step-Down Regulator |
| 页数 / 页 | 28 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. TJ = 25°C, VIN = 12V, fSW = 1MHz, L … |
| 文件格式/大小 | PDF / 411 Kb |
| 文件语言 | 英语 |
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. Internal MOSFET RDS(ON) Quiescent Current vs VIN vs Temperature Burst Mode Operation Shutdown Current vs VIN
160 800 20 TOP SWITCH 140 700 18 16 120 600 14 100 500 12 (mΩ) 80 (µA) 400 (µA) 10 I Q I Q BOTTOM SWITCH R DS(ON) 60 300 8 6 40 200 TA = 90°C 4 20 100 TA = 25°C T 2 A = –40°C 0 0 0 –50 –25 0 25 50 75 100 125 4 6 8 10 12 14 16 4 6 8 10 12 14 16 TEMPERATURE (°C) VIN (V) VIN (V) 3633 G10 3633 G11 3633 G12
Valley Current Limit Track Pull-Up Current Switch Leakage vs Temperature vs Temperature vs Temperature
7000 2.494 3.9 2.0 MAIN SWITCH 6000 SYNCHRONOUS SWITCH 1.8 3.8 5000 1.6 3.7 4000 1.4 (µA) (A) 3.6 3000 I LIM 1.2 I TRACK 3.5 2000 1.0 LEAKAGE CURRENT (nA) 1000 3.4 0.8 0 3.3 0.6 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3633 G13 3633 G14 3633 G15
V2P5 Load Regulation Burst Mode Operation Load Step
2.506 V 2.504 SW OUT 10V/DIV AC-COUPLED 100mV/DIV 2.502 VOUT 50mV/DIV 2.500 V2P5(V) IL 2A/DIV 2.498 IL 1A/DIV 2.496 5µs/DIV 3633 G17 20µs/DIV 3633 G18 VOUT = 1.8V VOUT = 1.8V 2.494 ILOAD = 100mA ILOAD = 100mA to 3A 0 2 4 6 8 10 CITH = 220pF I R LOAD (mA) ITH = 13kΩ 3633 G16 3633fd 6 For more information www.linear.com/LTC3633 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. Internal MOSFET RDS(ON) Quiescent Current vs VIN vs Temperature Burst Mode Operation Shutdown Current vs VIN
160 800 20 TOP SWITCH 140 700 18 16 120 600 14 100 500 12 (mΩ) 80 (µA) 400 (µA) 10 I Q I Q BOTTOM SWITCH R DS(ON) 60 300 8 6 40 200 TA = 90°C 4 20 100 TA = 25°C T 2 A = –40°C 0 0 0 –50 –25 0 25 50 75 100 125 4 6 8 10 12 14 16 4 6 8 10 12 14 16 TEMPERATURE (°C) VIN (V) VIN (V) 3633 G10 3633 G11 3633 G12
Valley Current Limit Track Pull-Up Current Switch Leakage vs Temperature vs Temperature vs Temperature
7000 2.494 3.9 2.0 MAIN SWITCH 6000 SYNCHRONOUS SWITCH 1.8 3.8 5000 1.6 3.7 4000 1.4 (µA) (A) 3.6 3000 I LIM 1.2 I TRACK 3.5 2000 1.0 LEAKAGE CURRENT (nA) 1000 3.4 0.8 0 3.3 0.6 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3633 G13 3633 G14 3633 G15
V2P5 Load Regulation Burst Mode Operation Load Step
2.506 V 2.504 SW OUT 10V/DIV AC-COUPLED 100mV/DIV 2.502 VOUT 50mV/DIV 2.500 V2P5(V) IL 2A/DIV 2.498 IL 1A/DIV 2.496 5µs/DIV 3633 G17 20µs/DIV 3633 G18 VOUT = 1.8V VOUT = 1.8V 2.494 ILOAD = 100mA ILOAD = 100mA to 3A 0 2 4 6 8 10 CITH = 220pF I R LOAD (mA) ITH = 13kΩ 3633 G16 3633fd 6 For more information www.linear.com/LTC3633 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