LM3466_12 Datasheet, PDF (3/13 Pages) Texas Instruments – Smart Linear LED Driver for Multi-Channel LED Systems

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the Texas Instruments Sales Office/
Distributors for availability and specifications.
VIN, ILED to GND
COMM to GND
SEN, SRC, VEQ to GND
ESD Rating
-0.3V to 75V
-0.3V to 7V
-0.3V to 5V
Human Body Model
Storage Temperature Range
Junction Temperature (T_J)
Operating Ratings
Supply Voltage Range (VIN)
Junction Temperature Range (T_J)
Thermal Resistance (θ_JC)
±2 kV
−65°C to + 150°C
+ 150°C
6V to 70V
−40°C to + 125°C
12.8 °C/W
Electrical Characteristics Specification with standard type are for T_A = T_J = +25°C only; limits in boldface type
apply over the full Operating Junction Temperature (T_J) range. Minimum and Maximum are guaranteed through test, design or
statistical correlation. Typical values represent the most likely parametric norm at T_J = +25°C, and are provided for reference
purposes only. Unless otherwise stated, the following conditions apply: V_IN = 48V.
Symbol
Parameter
Conditions
Min
Typ
Max Units
V_{IN -UVLO-UPPER}
VIN pin under-voltage lockout
(UVLO) upper threshold
V_IN increasing
4.06
4.78
5.30
V
V_{IN -UVLO-HYS}
I_IN
V_SEN
VIN pin UVLO hysteresis
Operating current to the VIN pin
The SEN pin voltage regulation
V_IN decreasing
V_EQ = 200 mV
197.1
195.6
0.52
V
550
640
µA
200 201.0 mV
200 201.5 mV
I_SEN
I_LED-OFF
R_DS(on)
SEN pin bias current out
ILED pin off current
Integrated power MOSFET on-
resistance
V_SEN = 0V
V_ILED = 70V
I_ILED = 300 mA
9.77
10.5 11.23 µA
0.1
0.6
µA
0.5
1.2
Ω
V_SRC-OPEN
I_LIMIT
COMM_ILOW
COMM_VHIGH
T_SD
SRC pin open circuit threshold
Current Limit
COMM pin pull-low current
COMM pin pull-high voltage
Thermal Shutdown
V_SEN = V_SRC, V_COMM = 0V
V_SEN = V_SRC = 0V, V_ILED = 3V
V_COMM = 5V
COMM pin to ground through a 10
kΩ
25
1.75
31
37
mV
2.06
2.35
A
34
54
µA
6.0
V
150
°C
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Note 3: θ_JC measurements are performed in general accordance with Mil-Std 883B, Method 1012.1 and utilize the copper heat sink technique. Copper Heat Sink
@ 18°C with an ambient temperature @ 22°C.
3
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