CAT4109 Datasheet, PDF (3/12 Pages) ON Semiconductor – 3-Channel Constant-Current RGB LED Driver with Individual PWM Dimming

CAT4109
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
R_OE
V_{OE_IH}
V_{OE_IL}
Supply Current Outputs Off
Supply Current Outputs Off
Supply Current Outputs On
Supply Current Outputs On
Shutdown Current
LED Output Leakage
OE Pull−down Resistance
OE Logic High Level
OE Logic Low Level
V_LED = 5 V, R_SET = 24.9 kW
V_LED = 5 V, R_SET = 5.23 kW
V_LED = 0.5 V, R_SET = 24.9 kW
V_LED = 0.5 V, R_SET = 5.23 kW
V_OE = 0 V
V_LED = 5 V, Outputs Off
2
5
mA
4
10
mA
2
5
mA
4
10
mA
1
mA
−1
1
mA
140
190
250
kW
1.3
V
0.4
V_{PWM_IH} PWMx Logic High Level
V_{PWM_IL} PWMx Logic Low Level
0.7 x V_DD
V
0.3 x V_DD
I_IL
V_RSETx
T_SD
T_HYS
I_LED/I_RSET
V_UVLO
Logic Input Leakage Current (PWMx)
RSETx Regulated Voltage
Thermal Shutdown
Thermal Hysteresis
RSET to LED Current Gain Ratio
Undervoltage Lockout (UVLO)
Threshold
V_PWMx = V_DD or GND
100 mA LED Current
−5
0
5
mA
1.17
1.2
1.23
V
150
°C
20
°C
400
1.8
V
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
Name
Conditions
Min
Typ
Max
Units
t_PS
Turn−On time, OE rising to I_LED from Shutdown I_LED = 100 mA
t_P1
Turn−On time, OE or PWMx rising to I_LED
I_LED = 100 mA
t_P2
Turn−Off time, OE or PWMx falling to I_LED
I_LED = 100 mA
t_R
LED rise time
I_LED = 100 mA
1.4
ms
600
ns
300
ns
300
ns
t_F
t_LO
t_HI
t_PWRDWN
LED fall time
OE low time
OE high time
OE low time to shutdown delay
I_LED = 100 mA
300
ns
1
ms
5
ms
4
8
ms
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