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SC627A Datasheet(PDF) 6 Page - Semtech Corporation |
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SC627A Datasheet(HTML) 6 Page - Semtech Corporation |
6 / 24 page SC627A 6 Notes: (1) ΔV F is the voltage difference between any two LEDs. (2) Once tripped, flash output will remain disabled until FLEN pin is cycled or reset via serial interface. (3) Current matching equals ± [I BL(MAX) - I BL(MIN ] / [I BL(MAX) + I BL(MIN) ]. (4) Test voltage is V OUT = 4.0V — a relatively extreme LED voltage — to force a transition during test. Typically V OUT = 3.2V for white LEDs. (5) Dropout is defined as (V IN - V LDO1 ) when V LDO1 drops 100mV from nominal. Dropout does not apply to LDO2 since it has a maximum output voltage of 1.8V. (6) Guaranteed by design Parameter Symbol Conditions Min Typ Max Units I2C Interface (Continued) I/O Pin Capacitance C IN 10 pF I2C Timing Clock Frequency f SCL 400 440 kHz SCL Low Period(6) t LOW 1.3 μs SCL High Period(6) t HIGH 0.6 μs Data Hold Time(6) t HD_DAT 0μs Data Setup Time(6) t SU_DAT 100 μs Setup Time for Repeated START Condition(6) t SU_STA 0.6 μs Hold Time for Repeated START Condition(6) t HD_STA 0.6 μs Setup Time for STOP Condition(6) t SU_STO 0.6 μs Bus-Free Time Between STOP and START(6) t BUF 1.3 μs Interface Start-up Time(6) t EN Bus Start-up Time After EN Pin is Pulled High 1 ms Electrical Characteristics (continued) |
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