Datasheet LTC3315A (Analog Devices) - 5
| Fabricante | Analog Devices |
| Descripción | Dual 5V, 2A Synchronous Step-Down DC/DCs in 2mm × 2mm LQFN |
| Páginas / Página | 22 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.3V, unless … |
| Formato / tamaño de archivo | PDF / 1.6 Mb |
| Idioma del documento | Inglés |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.3V, unless otherwise noted. VIN Quiescent Current vs
Versión de texto del documento
LTC3315A
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.3V, unless otherwise noted. VIN Quiescent Current vs VIN Quiescent Current vs VIN Shutdown Quiescent Current Temperature, All Modes, Not Temperature, Burst Mode, vs Temperature Sleeping Sleeping
10.0 3.0 100.0 VIN = 5.5V V 9.0 IN = 5.5V V 2.8 IN = 3.3V VIN = 3.3V 90.0 8.0 2.6 VIN = 2.25V BOTH BUCKS ENABLED 7.0 2.4 80.0 2.2 6.0 2.0 70.0 (µA) 5.0 (mA) (µA) BOTH BUCKS ENABLED I VIN 1.8 4.0 I VIN ONE BUCK ENABLED I VIN 60.0 1.6 3.0 1.4 50.0 2.0 1.2 VIN = 5.5V 40.0 1.0 VIN = 3.3V ONE BUCK ENABLED 1.0 VIN = 2.25V 0 0.8 30.0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3315ab G7 3315ab G08 3315ab G09
Minimum On Time vs Minimum On Time vs VIN Temperature UVLO Threshold vs Temperature
70 70 2.4 150°C VIN = 2.25V UVLO RISING 25°C 60 VIN = 3.3V 60 UVLO FALLING –50°C VIN = 5.5V 2.3 50 50 2.2 40 40 (V) 2.1 30 30 V IN 2.0 20 MINIMUM ON TIME (ns) 20 MINIMUM ON TIME (ns) 10 10 1.9 0 0 1.8 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 VIN (V) TEMPERATURE (°C) TEMPERATURE (°C) 3315ab G10 3315ab G11 3315 G12
Efficiency vs ILOAD Syncing, EN Threshold vs Temperature Current Limit vs Temperature Forced Continuous
420 3.4 100 EN RISING PMOS VIN = 3.3V 410 EN FALLING 3.3 NMOS 90 VOUT = 1.2V 400 3.2 80 390 70 3.1 380 60 3.0 (mV) 370 50 V EN 2.9 360 40 2.8 EFFICIENCY (%) 350 30 340 2.7 CURRENT OUT OF SW PIN (A) 20 330 2.6 10 320 2.5 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 1m 10m 100m 1 2 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (A) 3315ab G13 3315ab G14 1MHz, L = 1.5µH, DCR = 33mΩ 2MHz, L = 880nH, DCR = 19mΩ 3MHz, L = 560nH, DCR = 16mΩ 3315ab G15 Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.3V, unless otherwise noted. VIN Quiescent Current vs VIN Quiescent Current vs VIN Shutdown Quiescent Current Temperature, All Modes, Not Temperature, Burst Mode, vs Temperature Sleeping Sleeping
10.0 3.0 100.0 VIN = 5.5V V 9.0 IN = 5.5V V 2.8 IN = 3.3V VIN = 3.3V 90.0 8.0 2.6 VIN = 2.25V BOTH BUCKS ENABLED 7.0 2.4 80.0 2.2 6.0 2.0 70.0 (µA) 5.0 (mA) (µA) BOTH BUCKS ENABLED I VIN 1.8 4.0 I VIN ONE BUCK ENABLED I VIN 60.0 1.6 3.0 1.4 50.0 2.0 1.2 VIN = 5.5V 40.0 1.0 VIN = 3.3V ONE BUCK ENABLED 1.0 VIN = 2.25V 0 0.8 30.0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3315ab G7 3315ab G08 3315ab G09
Minimum On Time vs Minimum On Time vs VIN Temperature UVLO Threshold vs Temperature
70 70 2.4 150°C VIN = 2.25V UVLO RISING 25°C 60 VIN = 3.3V 60 UVLO FALLING –50°C VIN = 5.5V 2.3 50 50 2.2 40 40 (V) 2.1 30 30 V IN 2.0 20 MINIMUM ON TIME (ns) 20 MINIMUM ON TIME (ns) 10 10 1.9 0 0 1.8 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 VIN (V) TEMPERATURE (°C) TEMPERATURE (°C) 3315ab G10 3315ab G11 3315 G12
Efficiency vs ILOAD Syncing, EN Threshold vs Temperature Current Limit vs Temperature Forced Continuous
420 3.4 100 EN RISING PMOS VIN = 3.3V 410 EN FALLING 3.3 NMOS 90 VOUT = 1.2V 400 3.2 80 390 70 3.1 380 60 3.0 (mV) 370 50 V EN 2.9 360 40 2.8 EFFICIENCY (%) 350 30 340 2.7 CURRENT OUT OF SW PIN (A) 20 330 2.6 10 320 2.5 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 1m 10m 100m 1 2 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (A) 3315ab G13 3315ab G14 1MHz, L = 1.5µH, DCR = 33mΩ 2MHz, L = 880nH, DCR = 19mΩ 3MHz, L = 560nH, DCR = 16mΩ 3315ab G15 Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts