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LM3414 датащи(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
номер детали LM3414
подробное описание детали  1A 60W* Common Anode Capable Constant Current Buck LED Driver Requires No External Current Sensing Resistor
PDF  20 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3414 датащи(HTML) 6 Page - National Semiconductor (TI)

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Electrical Characteristics V
IN = 24V unless otherwise indicated. Typical and limits appearing in plain type apply
for T
A=TJ= +25°C (Note 4). Limits appearing in boldface type apply over full Operating Temperature Range. Datasheet min/max
specification limits are obtained under device test mode and guaranteed by design, test, or statistical analysis.
LM3414
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
I
IN-DIM-HIGH
Operating Current
4.5V
≤ Vin ≤ 42V
R
IADJ = 3.125 kΩ
V
DIM = High
2.2
3.2
3.5
mA
I
IN-DIM-LOW
Standby Current
4.5V
≤ Vin ≤ 42V
R
IADJ = 3.125 kΩ
V
DIM = Low
0.8
1.15
1.4
mA
I
LX-OFF
LX Pin Current
Main Switch Turned OFF
V
LX = VIN = 42V
6
µA
LM3414HV
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
I
IN-DIM-HIGH
Operating Current
4.5V
≤ Vin ≤ 65V
R
IADJ = 3.125 kΩ
V
DIM = High
2.2
3.3
3.6
mA
I
IN-DIM-LOW
Standby Current
4.5V
≤ Vin ≤ 65V
R
IADJ = 3.125 kΩ
V
DIM = Low
0.8
1.2
1.45
mA
I
LX-OFF
LX Pin Current
Main Switch Turned OFF
V
LX = VIN= 65V
6.5
µA
LM3414/LM3414HV
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
I
LED
Average LED Current
R
IADJ = 3.125 kΩ
T
A = 25°C
0.97
1
1.03
A
R
IADJ = 3.125 kΩ
T
A = –40°C to 125°C
0.95
1
1.05
A
V
CC-UVLO
Vcc UVLO Threshold
V
CC Decreasing
3.60
3.75
3.90
V
V
CC-UVLO-HYS
Vcc UVLO Hysteresis
300
mV
V
IADJ
IADJ Pin voltage
1.230
1.255
1.280
V
V
DIM
DIM Pin Threshold
V
DIM Increasing
1.0
1.2
V
V
DIM-HYS
DIM Pin Hysteresis
100
mV
f
SW
Switching Frequency Range
250
500
1000
kHz
f
SW-TOL
Switching Frequency Tolerance
R
FS = 40 kΩ
420
500
580
kHz
t
ON-MIN
Minimum On-time
400
ns
INTERNAL VOLTAGE REGULATOR
V
CC
V
CC Regulator Output Voltage (Note
5)
C
VCC = 1µF, No Load to IVCC = 2mA
4.7
5.4
6.0
V
Vin = 4.5V, 2 mA Load
3.8
4.2
V
MAIN SWITCH
R
LX
Resistance Across LX and GND
Main Switch Turned ON
1.8
Ω
THERMAL PROTECTION
T
SD
Thermal Shutdown Temperature
T
J Rising
170
°C
www.national.com
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