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CAT3636
Table 3. ELECTRICAL OPERATING CHARACTERISTICS
(over recommended operating conditions unless specified otherwise) VIN = 3.6 V, EN = High, T AMB = 25 ° C
Symbol
Name
Conditions
Min
Typ
Max
Units
I Q
I QSHDN
I LED ? ACC
I LED ? DEV
Quiescent Current
Shutdown Current
LED Current Accuracy
LED Channel Matching
1x mode, VIN = 4.2 V
1.33x mode, VIN = 3.3 V
1.5x mode, VIN = 2.8 V
2x mode, VIN = 2.5 V
V EN = 0 V
1 mA ≤ I LED ≤ 31 mA
I LED * I LEDAVG
1.5
2.8
3.7
3.8
± 3
± 1
1
mA
m A
%
%
I LEDAVG
R OUT
Output Resistance (open loop)
1x mode, I OUT = 100 mA
1.33x mode, I OUT = 100 mA
1.5x mode, I OUT = 100 mA
2x mode, I OUT = 100 mA
0.5
4.5
3.5
6
W
F OSC
I SC_MAX
Charge Pump Frequency
Output short circuit Current Limit
1.33x and 2x mode
1.5x mode
V OUT < 0.5 V
0.6
0.8
0.8
1.1
80
1.1
1.4
MHz
mA
LED TH
1x to 1.33x or 1.33x to 1.5x or 1.5x to 2x
Transition Thresholds at any LEDxx pin
150
mV
V HYS
T DF
I IN_MAX
1.33x to 1x Transition Hysteresis
Transition Filter Delay
Input Current Limit
V IN ? Highest LED V F
V OUT > 1 V
400
500
450
mV
m s
mA
R EN/DIM
V HI
V LO
T SD
T HYS
V UVLO
EN/DIM Pin
? Internal Pull ? down Resistor
? Logic High Level
? Logic Low Level
Thermal Shutdown
Thermal Hysteresis
Undervoltage lockout (UVLO) threshold
1.3
100
150
20
2
0.4
k W
V
V
° C
° C
V
Table 4. RECOMMENDED EN/SET TIMING (For 2.5 ≤ VIN ≤ 5.5 V, over full ambient temperature range ? 40 to +85 ° C.)
Symbol
T SETUP
T LO
T HI
Name
EN/SET setup from shutdown
EN/SET program low time
EN/SET program high time
Conditions
Min
10
0.2
0.2
Typ
Max
100 (Note 4)
100
100
Units
m s
m s
m s
T OFF
EN/SET low time to shutdown
1.5
ms
T DATADELAY
T RESETDELAY
EN/SET Delay to DATA
EN/SET Delay High to ADDRESS
500
2
1000
m s
ms
4. If the Max value is exceeded then the user should wait 2 ms before trying to program the device again.
Figure 2. EN/SET One Wire Addressable Timing Diagram
http://onsemi.com
3
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