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LT3697 Datasheet(PDF) 9 Page - Analog Devices |
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LT3697 Datasheet(HTML) 9 Page - Analog Devices |
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9 / 40 page  LT8698S/LT8698S-1 9 Rev. A For more information www.analog.com TYPICAL PERFORMANCE CHARACTERISTICS Switching Frequency vs Load Current Switch Rising Edge TA = 25°C, VIN = 12V unless otherwise noted. Soft-Start vs Time Start-Up/Dropout Minimum VIN for Full Frequency Regulation @ 2MHz with 400mΩ Cable Drop Compensation Load Transient Response Through Cable Load Transient Response Through Cable Output Current Limit Transient USB5V (Feedback) Shorted to Ground Transient Start–Up / Dropout VBUS VIN IBUS = 0A 10ms/DIV 2V/DIV 8698S G22 400mΩ CABLE COMP L = XAL5030–222 RSEN = 10mΩ VIN @ IBUS = 2.5A VIN @ IBUS = 1A VBUS @ IBUS = 2.5A VBUS @ IBUS = 1A TEMPERATURE (°C) –50 –25 0 25 50 75 100 125 150 5.0 5.5 6.0 6.5 7.0 7.5 8.0 Cable Drop Comp Regulation @ 2MHz with 400mΩ Minimum VIN for Full Frequency 8698S G23 VBUS VLOAD IBUS 25mA/µs FRONT PAGE CIRCUIT CABLE = 3m AWG24 CLOAD = 0µF 40µs/DIV 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Through Cable Load Transient Response 8698S G24 VBUS VLOAD IBUS 25mA/µs FRONT PAGE CIRCUIT CABLE = 3m AWG CLOAD = 0µF 40µs/DIV 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Through Cable Load Transient Response 8698S G25 Output Current Limit Transient VBUS OVERLOAD APPLIED VBUS OVERLOAD RELEASED 1ms/DIV VBUS 2V/DIV IBUS 1A/DIV 8698S G26 RSEN = 10m RCDC = 0 FB Shorted to Ground VBUS VUSB5V FRONT PAGE CIRCUIT IBUS = 1A 10µs/DIV 1V/DIV 8698S G27 SYNC/MODE = FLOAT SYNC/MODE = LOW IBUS CURRENT (A) 0 0.5 1 1.5 2 2.5 0 0.40 0.80 1.20 1.60 2.00 2.40 vs Load Current Switching Frequency 8698S G19 Switch Rising Edge VIN = 12V IBUS = 2A 1ns/DIV VSW 2V/DIV 8698S G20 Soft–Start vs Time 200µs/DIV VBUS 1V/DIV 8698S G21 IBUS = 0A |
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