Datasheet LTC3315B (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 / 1.8 Mb |
| Idioma del documento | Inglés |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.3V, unless otherwise noted. VIN Quiescent Current vs
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Versión de texto del documento
LTC3315B
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.3V, unless otherwise noted. VIN Quiescent Current vs V IN Quiescent Current vs IN Quiescent Current vs VIN Shutdown Quiescent Current Temperature, All Modes, Not Temperature, All Modes, Not Temperature, Burst Mode, vs Temperature Sleeping Sleeping
10.0 3.4 100.0 VIN = 5.5V V 9.0 IN = 5.5V V 3.2 IN = 3.3V V 3.0 IN = 3.3V 90.0 8.0 VIN = 2.25V 2.8 7.0 2.6 80.0 BOTH BUCKS ENABLED 6.0 2.4 70.0 (µA) 5.0 2.2 (mA) (µA) BOTH BUCKS ENABLED I VIN 2.0 ONE BUCK ENABLED 4.0 I VIN I VIN 60.0 1.8 3.0 1.6 50.0 2.0 1.4 V 1.2 IN = 5.5V 40.0 1.0 V ONE BUCK ENABLED IN = 3.3V 1.0 V 0 IN = 2.25V 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) 3315B G07 3315B G08 3315B 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) 3315B G10 3315B G11 3315B G12
Efficiency vs ILOAD Syncing, Syncing EN Threshold vs Temperature Current Limit vs Temperature Forced Continuous
420 3.4 100 EN RISING PMOS 410 V EN FALLING 3.3 NMOS IN = 3.3V 90 VOUT = 1.8V 400 3.2 80 390 3.1 70 380 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) 3315B G13 3315B G14 3315B G15 3MHz 640nH DCR = 31mΩ 6MHz 330nH DCR = 21mΩ 10MHz 240nH DCR = 16mΩ 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 V IN Quiescent Current vs IN Quiescent Current vs VIN Shutdown Quiescent Current Temperature, All Modes, Not Temperature, All Modes, Not Temperature, Burst Mode, vs Temperature Sleeping Sleeping
10.0 3.4 100.0 VIN = 5.5V V 9.0 IN = 5.5V V 3.2 IN = 3.3V V 3.0 IN = 3.3V 90.0 8.0 VIN = 2.25V 2.8 7.0 2.6 80.0 BOTH BUCKS ENABLED 6.0 2.4 70.0 (µA) 5.0 2.2 (mA) (µA) BOTH BUCKS ENABLED I VIN 2.0 ONE BUCK ENABLED 4.0 I VIN I VIN 60.0 1.8 3.0 1.6 50.0 2.0 1.4 V 1.2 IN = 5.5V 40.0 1.0 V ONE BUCK ENABLED IN = 3.3V 1.0 V 0 IN = 2.25V 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) 3315B G07 3315B G08 3315B 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) 3315B G10 3315B G11 3315B G12
Efficiency vs ILOAD Syncing, Syncing EN Threshold vs Temperature Current Limit vs Temperature Forced Continuous
420 3.4 100 EN RISING PMOS 410 V EN FALLING 3.3 NMOS IN = 3.3V 90 VOUT = 1.8V 400 3.2 80 390 3.1 70 380 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) 3315B G13 3315B G14 3315B G15 3MHz 640nH DCR = 31mΩ 6MHz 330nH DCR = 21mΩ 10MHz 240nH DCR = 16mΩ 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