CAT4106 Datasheet, PDF (3/15 Pages) ON Semiconductor – 6 W Quad Channel DC/DC LED Driver with Diagnostics

CAT4106
T_LEDSETUP
EN/PWM
SHUTDOWN
T_HI
100% BRIGHTNESS
T_LO
DIMMING
LED CURRENT
T_PWRDWN
POWERDOWN SHUTDOWN
DEVICE
QUIESCENT CURRENT
Figure 2. CAT4106 EN/PWM Timing
Table 4. ELECTRICAL OPERATING CHARACTERISTICS
VIN = 5 V, VL (inductor drive voltage) = 12 V, T_AMB = 25°C (over recommended operating conditions unless specified otherwise)
Symbol
Description
Conditions
Min
Typ
Max
Units
I_Q
VIN Operating Current
Switching
Not Switching
Switching
Not Switching
(I_LED = 30 mA)
(I_LED = 30 mA)
(I_LED = 60 mA)
(I_LED = 60 mA)
2.5
3.5
mA
2.0
3.0
3.4
4.4
2.9
3.9
I_SD
VIN input shutdown Current
EN/PWM
V_IH
Logic High Threshold
V_IL
Logic Low Threshold
R_EN
Internal Pull−Down Resistor
V_EN = 0 V
Device Enable Level
Disable/PWM Level
1
mA
0.8
1.3
V
0.4
0.7
V
100
200
300
kW
V_UVLO
T_SD
T_HYS
V_RSET
I_LED/I_RSET
V_DO
DI_LED
I_LED−OFF
V_VFMAX
V_VFMIN
V_CTRL
I_CTRL
I_FAULT
Undervoltage lockout (UVLO)
Thermal Shutdown Threshold
Thermal Hysteresis
RSET regulation voltage
RSET to LED Current gain ratio
LED Channel Dropout Voltage
LED Channel Matching
LED Channel leakage
O/C Detect voltage threshold
S/C Detect voltage threshold
CTRL pin voltage accuracy
CTRL pin maximum load
Pull−down Drive Current
Open Drain Leakage Current
VIN pin voltage
10 mA < I_RSET < 2 mA
30 mA LED current
I_LED = 175 mA
0.5 V < V_LED < 5 V
Channel is Off
Offset to Lowest LED output
FAULT is Active (0.1 V bias)
FAULT is Inactive
2.0
V
150
_C
20
_C
1.17
1.20
1.23
V
100
0.5
V
−5
±1
+5
%
1
mA
1.15
1.20
1.25
V
1.15
1.20
1.25
V
− 0.1
0
+ 0.1
V
25
mA
1
2
mA
1
mA
V_FB
I_FB
F_SW
I_SWMAX
R_SW
DC_MAX
DC_MIN
I_SWLEAK
OVP_SW
FB Pin control voltage
FB pin input leakage current
SW Pin
Switching Frequency
Switch Pin Current Limit
Switch Pin On−resistance
Maximum Duty Cycle
Minimum Duty Cycle
Switch Leakage Current
Over Voltage Protection Detect
Normal switching
mode regulation
I_SW = 500 mA
Prior to Current Limiting
Prior to Pulse−Skipping
V_SW = 20 V
Enters Low Power mode
285
300
315
mV
1
mA
0.7
1.0
1.3
MHz
0.8
1.0
A
1.0
W
96
%
5
%
5
mA
40
V
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