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SC417 Datasheet(PDF) 10 Page - Semtech Corporation |
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SC417 Datasheet(HTML) 10 Page - Semtech Corporation |
10 / 30 page SC417/SC427 10 Ultrasonic Powersave Mode — No Load (SC417) Time (10μs/div) (50mV/div) (10V/div) (10V/div) (5V/div) V IN = 12V, V OUT = 1.05V, I OUT = 0A, V LDO = V 5V = EN/PSV= ENL = 5V 1.073V Δ V ~ 29mV 1.044V f=26.22kHz Forced Continuous Mode — No Load Time (2μs/div) (50mV/div) (10V/div) (10V/div) (5V/div) V IN = 12V, V OUT = 1.05V, I OUT = 0A, V LDO = V 5V = ENL = 5V, EN/PSV= float 1.078V Δ V ~ 30mV 1.048V f=227.4kHz Time (100μs/div) Enabled Loaded Output — Full Scale (50mV/div) (10V/div) (5V/div) V IN = 12V, V OUT = 1.05V, I OUT = 1A, V LDO = V 5V = ENL = 5V. EN/PSV= 5V 1.05V 0V ΔV/ΔT ~ 1.4V/ms Enabled Loaded Output — Power Good True (500mV/div) (10V/div) (5V/div) V IN = 12V, V OUT = 1.05V, I OUT = 1A, V LDO = V 5V = ENL = 5V. EN/PSV= 5V Time (400μs/div) 1.05V 0V ~2ms Typical Characteristics (continued) Characteristics in this section are based on using the Typical Application Circuit on page 2 (SC417/SC427). Powersave Mode — No Load (SC427) Time (10ms/div) (50mV/div) (5V/div) V IN = 12V, V OUT = 1.05V, I OUT = 0A, V LDO = V 5V = EN/PSV= ENL = 5V Time (400μs/div) Self-Biased Start-Up — Power Good True (10V/div) (2V/div) (5V/div) V IN = 0V to 12V step, V OUT = 1.05V, I OUT = 0A, V LDO = V 5V = EN/PSV= ENL = 5V 1.05V 0V ΔV/ΔT ~ 1.4 V/ms (500mV/div) |
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