LM3431MHX National Semiconductor, LM3431MHX Datasheet - Page 4

• Manufacturer Part Number: LM3431MHX
• Description: 3-Channel Constant Current LED Driver with Integrated Boost Controller
• Manufacturer: National Semiconductor

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System
Linear Current Controller
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
apply over the junction temperature (TJ) range of -40°C to +125°C. Unless otherwise stated, V
limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ
= 25°C, and are provided for reference purposes only. (Note 5)
Voltages from the indicated
pins to SGND:
VIN
EN
DIM
MODE/F
REFIN
THM
DLY
SNSx
NDRVx
CFB
SC
AFB
ΔV
V
V
V
V
I
I
Symbol
VCC
NDRV_SK
NDRV_SC
OS_DELTA
OS_DELTA
OS_DELTA
OS_DELTA
V
REF
UVLO
V
I
I
I
V
REFIN
V
I
V
V
Q_SB
Q_SD
EN_ST
V
NDRV
SNS
I
REF
CC
EN
OS
OS
Q
/ ΔV
ILIM
IN
Parameter
Operating VIN Current (Note 6)
Standby mode VIN current
Shutdown mode VIN Current
VCC voltage
VCC current limit
UVLO threshold
hysteresis
Enable pin Standby threshold
Enable pin On threshold
hysteresis
Reference Voltage
REFIN input bias current
Line regulation
NDRVx drive voltage capability
NDRVx drive sink current
NDRVx drive source current
SNSx input bias current
SNSx amp offset voltage
SNSx amp offset voltage
Ch. To Ch. offset voltage mismatch
(Note 7)
Ch. To Ch. offset voltage mismatch
(Note 7)
Ch. To Ch. offset voltage mismatch
(Note 7)
Ch. To Ch. offset voltage mismatch
(Note 7)
Specifications in standard type are for TJ = 25°C only, and limits in boldface type
-0.3V to 37V
-0.3V to 10V
-0.3V to 40V
(Note 1)
-0.3V to 7V
-0.3V to 7V
-0.3V to 7V
-0.3V to 7V
-0.3V to 7V
-0.3V to 7V
-0.3V to 7V
-0.3V to 7V
-0.3V to 7V
Conditions
DIM = 5V
EN = 1V
EN = 0V, Vin = 36V
Iload = 25 mA, Vin = 5.5 to 36V
VIN rising, measured at VCC
EN rising
EN rising
IREF < 300 µA
REFIN = 300 mV
5.5V < VIN < 36V
INDRVx = 5 mA
NDRV
NDRV
SNSx = 300 mV
REFIN = 300 mV (LM3431)
REFIN = 300 mV (LM3431A)
REFIN = 300 mV, 25°C (LM3431)
REFIN = 300 mV, -40°C to +125°C
(LM3431)
REFIN = 300 mV, 25°C (LM3431A)
REFIN = 300 mV, -40°C to +125°C
(LM3431A)
4
X
X
= 0.9V
= 0.9V
Operating Ratings
CS
VCC
Storage Temperature
Soldering Dwell Time, Temp.
ESD Rating (Note 2)
Human Body Model
VIN
Junction Temp. Range
Thermal Resistance (θ
(Note 3)
TSSOP-28 (0.5W)
Power Dissipation (Note 4)
TSSOP-28
Infrared
Vapor Phase
JA
)
IN
= 12V. Minimum and Maximum
1.185 1.230 1.275
(Note 1)
4.80
2.45
Min
10
-5
-3
4
0.0001
4.36
0.28
0.75
Typ
115
4.0
3.7
2.5
3.7
15
72
14
15
20
5
6
-65°C to +150°C
-40°C to +125°C
20sec, 240°C
75sec, 219°C
4.5V to 36V
-0.3V to 7V
-0.3V to 7V
Max
4.85
5.24
4.50
2.55
165
5.5
3.5
23
80
20
30
+5
+3
8
6
4
32°C/W
3.1W
2 kV
Units
%/V
mA
mA
mA
mV
mA
mA
mV
mV
mV
mV
mV
mV
uA
nA
µA
V
V
V
V
V
V
V