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Charge Pump for Backlight/Flash/RGB LEDs
with Safety Timer
ELECTRICAL CHARACTERISTICS (continued)
(V IN = V PIN = 3.6V, V DD = 1.8V, V GND = V PGND = 0V, temperature derating disabled, T A = -40°C to +85°C, typical values are at T A =
+25°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Input Voltage Mode Transition Hysteresis
150
mV
M_, S_, F_ Leakage in Shutdown
All LEDs off, FSH =
V DD
T A = +25°C
T A = +85°C
0.01
0.1
1
μA
OUT Pulldown Resistance in Shutdown
Maximum OUT Current
All LEDs off, FSH = V DD
V IN ≥ 3.2V, V OUT = 3.9V
1x mode (V IN - V OUT ) / I OUT
610
5
0.5
2.5
k Ω
mA
Open-Loop OUT Resistance
1.5x mode (1.5 x V IN - V OUT ) / I OUT
1.5
3.5
Ω
Switching Frequency
2x mode (2 x V IN - V OUT ) / I OUT
SDA = 111xxx00
2.0
1
2 9
4.1
MHz
S1, S2, S3 (RGB) Full-Scale Ramp Time
Logic-Input High Voltage
Logic-Input Low Voltage
SDA = 111xxx01
SDA = 111xxx10
SDA = 111xxx11
V DD = 1.6V to 5.5V
V DD = 1.6V to 5.5V
0.7 x V DD
2 18
2 19
2 20
0.3 x V DD
μs
V
V
Logic-Input Current
SDA Output Low Voltage
V IL = 0V or V IH =
5.5V
I SDA = 3mA
T A = +25°C
T A = +85°C
0.01
0.1
0.03
1
0.4
μA
V
I 2 C Clock Frequency
400
kHz
Bus-Free Time Between START and STOP
t BUF
1.3
μs
Hold Time Repeated START Condition
SCK Low Period
SCK High Period
Setup Time Repeated START Condition
SDA Hold Time
SDA Setup Time
Setup Time for STOP Condition
Thermal Shutdown
Thermal-Shutdown Hysteresis
t HD_STA
t LOW
t HIGH
t SU_STA
t HD_DAT
t SU_DAT
t SU_STO
0.6
1.3
0.6
0.6
0
100
0.6
0.1
0.2
0.2
0.1
-0.01
50
0.1
+160
20
μs
μs
μs
μs
μs
ns
μs
°C
°C
Note 1: All devices are 100% production tested at T A = +25°C. Limits over the operating temperature range are guaranteed
by design.
Note 2: LED current specification includes both accuracy and matching tolerance.
Note 3: Dropout voltage is defined as the M2 or F3 to GND voltage at which current into M2 or F3 drops 10% from the value at 0.2V.
All other current regulators are tested functionally by the accuracy test and guaranteed for low dropout by design.
_______________________________________________________________________________________
3
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