CAT4106 Datasheet, PDF (2/15 Pages) ON Semiconductor – 6 W Quad Channel DC/DC LED Driver with Diagnostics

CAT4106
V_L
3 V to 24 V ^C2
4.7 mF
V_IN
3 V to 5.5 V ^C1
1 mF
L
D
47 mH
C3
10 mF/
50 V
VIN ^SW VFMAX
VFMIN
CAT4106
OFF... ON... DIM
EN/PWM
LED1
RSET
R2 ^{20 kW} _CTRL
LED2
LED3
LED4
FB _GND
FAULT
PGND
R1
R3
20 kW
R4 _R6
R5 _R7
V_IN
R8
LED Fault Detection
(open drain pull−down)
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameters
Ratings
Units
VIN, RSET, EN/PWM, CTRL, FB, FAULT
−0.3 V to 6
V
VFMIN, VFMAX
−0.3 V to 6
V
LED1, LED2, LED3, LED4
−0.3 V to 25
V
SW (internally clamped to 40 V)
50
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
VIN
Inductor Drive Voltage
LED String Forward Voltage per channel
Ambient Temperature Range
I_LED per LED pin
3. Typical application circuit with external components is shown above.
Range
3.0 to 5.5
3.0 to 24
up to 36
−40 to +85
10 to 175
Units
V
V
V
_C
mA
Table 3. RECOMMENDED EN/PWM TIMING
(For 3.0 ≤ VIN ≤ 5.5 V, over full ambient temperature range −40 to +85°C.)
Symbol
Name
Conditions
T_LEDSETUP
T_LO
T_HI
T_PWRDWN
T_LEDSET
LED setup time from shutdown
EN/PWM low time
EN/PWM high time
EN/PWM low time to shutdown delay
LED current settling time
I_LED = 100 mA
Min
Typ
Max
10
40
100
0.2
2000
0.2
8
0.2
Units
ms
ms
ms
ms
ms
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