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CAT4109, CAV4109
Table 3. ELECTRICAL OPERATING CHARACTERISTICS (Min and Max values are over recommended operating conditions
unless specified otherwise. Typical values are at V DD = 5.0 V, T AMB = 25 ° C.)
Symbol
Name
Conditions
Min
Typ
Max
Units
DC CHARACTERISTICS
I DD1
I DD2
I DD3
I DD4
I SHDN
I LKG
Supply Current Outputs Off
Supply Current Outputs Off
Supply Current Outputs On
Supply Current Outputs On
Shutdown Current
LED Output Leakage
V LED = 5 V, R SET = 24.9 k W
V LED = 5 V, R SET = 5.23 k W
V LED = 0.5 V, R SET = 24.9 k W
V LED = 0.5 V, R SET = 5.23 k W
V OE = 0 V
V LED = 5 V, Outputs Off
? 1
2
4
2
4
5
10
5
10
1
1
mA
mA
mA
mA
m A
m A
R OE
V OE_IH
V OE_IL
V PWM_IH
V PWM_IL
OE Pull ? down Resistance
OE Logic High Level
OE Logic Low Level
PWMx Logic High Level
PWMx Logic Low Level
140
1.3
0.7 x V DD
190
250
0.4
0.3 x V DD
k W
V
V
I IL
V RSETx
Logic Input Leakage Current (PWMx)
RSETx Regulated Voltage
V PWMx = V DD or GND
? 5
1.17
0
1.2
5
1.23
m A
V
T SD
T HYS
Thermal Shutdown
Thermal Hysteresis
150
20
° C
° C
I LED /I RSET
RSET to LED Current Gain Ratio
100 mA LED Current
400
V UVLO
Undervoltage Lockout (UVLO)
Threshold
1.8
V
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
Table 4. RECOMMENDED TIMING (Min and Max values are over recommended operating conditions unless specified otherwise.
Typical values are at V DD = 5.0 V, T AMB = 25 ° C.)
Symbol
t PS
t P1
t P2
t R
t F
Name
Turn ? On time, OE rising to I LED from Shutdown
Turn ? On time, OE or PWMx rising to I LED
Turn ? Off time, OE or PWMx falling to I LED
LED rise time
LED fall time
Conditions
I LED = 100 mA
I LED = 100 mA
I LED = 100 mA
I LED = 100 mA
I LED = 100 mA
Min
Typ
1.4
600
300
300
300
Max
Units
m s
ns
ns
ns
ns
t LO
t HI
OE low time
OE high time
1
5
m s
m s
t PWRDWN
OE low time to shutdown delay
4
8
ms
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