Datasheet LTC3308A (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 5V, 4A Synchronous Step-Down Silent Switcher in 2mm x 2mm LQFN |
| Pages / Page | 24 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.3V, TA = 25°C, unless … |
| File Format / Size | PDF / 2.4 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.3V, TA = 25°C, unless otherwise noted. Feedback Voltage. Minimum On-Time
Model Line for this Datasheet
- LTC3308AEV#TRMPBF LTC3308AEV#TRPBF LTC3308AEV#WTRMPBF LTC3308AEV#WTRPBF LTC3308AHV#TRMPBF LTC3308AHV#TRPBF LTC3308AHV#WTRMPBF LTC3308AHV#WTRPBF LTC3308AIV#TRMPBF LTC3308AIV#TRPBF LTC3308AIV#WTRMPBF LTC3308AIV#WTRPBF LTC3308AJV#TRMPBF LTC3308AJV#TRPBF LTC3308AJV#WTRMPBF LTC3308AJV#WTRPBF LTC3308AMPV#TRMPBF LTC3308AMPV#TRPBF
Text Version of Document
LTC3308A
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.3V, TA = 25°C, unless otherwise noted. Feedback Voltage Minimum On-Time Minimum On-Time
505 60 60 504 50 50 503 502 40 40 501 TAGE (mV) 500 30 30 499 20 20 498 FEEDBACK VOL MINIMUM ON–TIME (ns) MINIMUM ON–TIME (ns) 497 10 150°C V 10 IN = 5.5V 496 25°C VIN = 3.3V –50°C VIN = 2.25V 495 0 0 –50 –25 0 25 50 75 100 125 150 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (ºC) INPUT VOLTAGE (V) TEMPERATURE (°C) 3308A G01 3308A G02 3308A G03
Switch On Resistance Switch On Resistance Default Switching Frequency
44 40 2.20 PMOS VIN = 3.3V 40 NMOS 2.16 35 36 2.12 32 30 2.08 28 2.04 (mΩ) 25 (mΩ) 24 PMOS NMOS 2.00 20 20 R DS(ON) R DS(ON) 1.96 T FREQUENCY (MHz) 16 15 AUL 1.92 12 DEF 1.88 10 8 1.84 4 5 1.80 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 50 75 100 125 150 2 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3308A G04 3308A G05 3308A G06
Default Switching Frequency Switching Frequency RT Switching Frequency
2.20 3.2 2.20 RT = 34.8 kΩ 2.16 3.0 2.16 2.8 2.12 2.12 2.6 2.08 2.08 2.4 2.04 2.2 2.04 2.00 2.0 2.00 1.96 1.8 T FREQUENCY (MHz) 1.96 1.6 AUL 1.92 FREQUENCY (MHz) FREQUENCY (MHz) 1.92 1.4 DEF 1.88 V 1.88 IN = 5.5V 1.2 VIN = 5.5V V 1.84 IN = 3.3V VIN = 3.3V 1.84 V 1.0 IN = 2.25V VIN = 2.25V 1.80 0.8 1.80 –50 –25 0 25 50 75 100 125 150 20 25 30 35 40 45 50 55 60 65 70 75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) RT (kΩ) TEMPERATURE (°C) 3308A G07 3308A G08 3308A G09 Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.3V, TA = 25°C, unless otherwise noted. Feedback Voltage Minimum On-Time Minimum On-Time
505 60 60 504 50 50 503 502 40 40 501 TAGE (mV) 500 30 30 499 20 20 498 FEEDBACK VOL MINIMUM ON–TIME (ns) MINIMUM ON–TIME (ns) 497 10 150°C V 10 IN = 5.5V 496 25°C VIN = 3.3V –50°C VIN = 2.25V 495 0 0 –50 –25 0 25 50 75 100 125 150 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (ºC) INPUT VOLTAGE (V) TEMPERATURE (°C) 3308A G01 3308A G02 3308A G03
Switch On Resistance Switch On Resistance Default Switching Frequency
44 40 2.20 PMOS VIN = 3.3V 40 NMOS 2.16 35 36 2.12 32 30 2.08 28 2.04 (mΩ) 25 (mΩ) 24 PMOS NMOS 2.00 20 20 R DS(ON) R DS(ON) 1.96 T FREQUENCY (MHz) 16 15 AUL 1.92 12 DEF 1.88 10 8 1.84 4 5 1.80 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 50 75 100 125 150 2 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3308A G04 3308A G05 3308A G06
Default Switching Frequency Switching Frequency RT Switching Frequency
2.20 3.2 2.20 RT = 34.8 kΩ 2.16 3.0 2.16 2.8 2.12 2.12 2.6 2.08 2.08 2.4 2.04 2.2 2.04 2.00 2.0 2.00 1.96 1.8 T FREQUENCY (MHz) 1.96 1.6 AUL 1.92 FREQUENCY (MHz) FREQUENCY (MHz) 1.92 1.4 DEF 1.88 V 1.88 IN = 5.5V 1.2 VIN = 5.5V V 1.84 IN = 3.3V VIN = 3.3V 1.84 V 1.0 IN = 2.25V VIN = 2.25V 1.80 0.8 1.80 –50 –25 0 25 50 75 100 125 150 20 25 30 35 40 45 50 55 60 65 70 75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) RT (kΩ) TEMPERATURE (°C) 3308A G07 3308A G08 3308A G09 Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
