CAT4104 Datasheet, PDF (2/13 Pages) ON Semiconductor – 700 mA Quad Channel Constant Current LED Driver

CAT4104
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
VIN, RSET, EN/PWM Voltages
−0.3 to 6
V
LED1, LED2, LED3, LED4 Voltages
−0.3 to 25
V
Storage Temperature Range
−65 to +160
_C
Junction Temperature Range
−40 to +150
_C
Lead Temperature
300
_C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameter
Rating
Unit
VIN
3.0 to 5.5
V
Voltage applied to LED1 to LED4, outputs off
up to 25
V
Voltage applied to LED1 to LED4, outputs on
up to 6 (Note 2)
V
Ambient Temperature Range
−40 to +85
_C
I_LED per LED pin
10 to 175
mA
2. Keeping LEDx pin voltage below 6 V in operation is recommended to minimize thermal dissipation in the package.
NOTE: Typical application circuit with external components is shown on page 1.
Table 3. ELECTRICAL OPERATING CHARACTERISTICS (Min and Max values are over the recommended operating conditions
unless specified otherwise. Typical values are at VIN = 5.0 V, T_AMB = 25°C.)
Symbol
Name
Conditions
Min
Typ
Max Units
I_LED−ACC LED Current Accuracy
I_LED−DEV
LED Channel Matching
V_DOUT
V_RSET
I_Q
Dropout Voltage
RSET Pin Voltage
Quiescent Current
I_LEDNOM * I_LED
I_LEDNOM
±2
%
I_LED * I_LEDAVG
I_LEDAVG
(Note 3)
−5
±1
+5
%
I_LED = 175 mA
400
mV
1.17
1.2
1.23
V
No LED, RSET = Float
No LED, RSET = 770 W
0.6
mA
6
I_QSHDN
R_EN/PWM
V_HI
V_LO
Shutdown Current
EN/PWM Pin
− Internal pull−down resistance
− Logic High Level
− Logic Low Level
V_EN = 0 V
1
mA
200
kW
1.3
V
0.4
V
T_SD
Thermal Shutdown
150
°C
T_HYS
Thermal Hysteresis
20
°C
I_LED/I_RSET RSET to LED Current gain ratio
25 mA LED current
100
V_UVLO
Undervoltage lockout (UVLO) threshold
2.0
V
3. Min and Max values are tested for I_LED = 50 mA, VIN = 3.5 V, VLEDx = 0.4 V, T_AMB = 25°C.
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