SC622A_09 Datasheet, PDF (6/23 Pages) Semtech Corporation – LED Light Management Unit Charge Pump, 400mA Flash LED,Dual LDOs,and I2C Interface

SC622A
Electrical Characteristics (continued)
Parameter
I²C Interface (continued)
I/O Pin Capacitance
I²C Timing
Clock Frequency
SCL Low Period⁽⁴⁾
SCL High Period⁽⁴⁾
Data Hold Time⁽⁴⁾
Data Setup Time⁽⁴⁾
Setup Time for Repeated
START Condition⁽⁴⁾
Hold Time for Repeated
START Condition⁽⁴⁾
Setup Time for STOP
Condition⁽⁴⁾
Bus-Free Time Between
STOP and START⁽⁴⁾
Symbol
C
IN
f
SCL
t
LOW
t
HIGH
t
HD_DAT
t
SU_DAT
t
SU_STA
t
HD_STA
t
SU_STO
t
BUF
Conditions
Min Typ Max Units
10
pF
400 440 kHz
1.3
μs
0.6
μs
0
μs
100
μs
0.6
μs
0.6
μs
0.6
μs
1.3
μs
Interface Start-up Time⁽⁴⁾
t
Bus Start-up Time After EN Pin is Pulled High
EN
1
ms
Notes:
(1) Once tripped, flash output will remain disabled until FLEN pin is cycled or reset via serial interface.
(2) Test voltage is V = 4.5V — a relatively extreme LED voltage — to force a transition during test. Typically V = 3.3V for the white LED at
OUT
OUT
100mA.
(3) Dropout is defined as (V -V ) whenV drops 100mV from nominal. Dropout does not apply to LDO2 since it has a maximum output voltage
IN LDO1
LDO1
of 1.8V.
(4) Guaranteed by design
6