Datasheet LTC3309A (Analog Devices) - 5

LTC3309A
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 (C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3309A G01 3309A G02 3309A 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) 3309A G04 3309A G05 3309A 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) 3309A G07 3309A G08 3309A 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