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LM5071 Scheda tecnica(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Il numero della parte LM5071
Spiegazioni elettronici  Power Over Ethernet PD Controller with Auxiliary Power Power Over Ethernet PD Controller with Auxiliary Power
PDF  18 Pages
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM5071 Scheda tecnica(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN ,RTN to VEE
-0.3V to 80V
RSIG to V
IN
-12V to 0V
AUX to V
EE
-0.3V to 57V
UVLO
-0.3V to 13V
RCLASS to V
EE
-0.3V to 7V
ARTN to RTN
-0.3V to 0.3V
V
CC, OUT to ARTN
-0.3V to 16V
All other inputs to ARTN
-0.3V to 7V
ESD Rating
Human Body Model
2000V
Lead Temperature (Note 2)
Wave (4 seconds)
Infrared (10 seconds)
Vapor Phase (75 seconds)
260˚C
240˚C
219˚C
Operating Ratings
V
IN voltage
1.8V to 60V
External voltage applied to V
CC
8.1V to 15V
Electrical Characteristics (Note 3)
Specifications in standard type face are for T
J= +25˚C and those in boldface type apply over the full operating junction tem-
perature range. Unless otherwise specified: V
IN = 48V, VCC = 10V, RT = 30.3k
Ω.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Powered Interface
IOS
Offset Current
V
IN < 10.0V
10
uA
VCLSS(ON)
Signature Resistor Disable /
Classification Current Turn On
V
IN with respect to VEE
10.0
11.5
12.5
V
VCLSS(OFF)
Classification Current Turn Off
V
IN with respect to VEE
23.5
25.0
26.5
V
Classification Voltage
With respect to V
EE
1.43
1.5
1.57
V
ICLASS
Supply Current During
Classification
V
IN =17V
0.5
1.5
mA
IDC
Supply Current During Normal
Operation
OUT floating
1
1.9
mA
UVLO Pin Reference Voltage
V
IN > 27V
1.95
2.00
2.05
V
UVLO Hysteresis Current
V
IN > UVLO
8.0
10
11.5
uA
Softstart Release
RTN falling with respect to V
EE
1.2
1.45
1.7
V
Softstart Release Hysteresis
RTN rising with respect to V
EE
0.8
1.1
1.3
V
RDS(ON)
PowerFET Resistance
I = 350mA,
V
IN = 48V
1
2.2
Ω
ILEAK
SMPS Bias Current
V
EE = 0V, VIN = RTN = 57V
100
uA
AUX Pin Threshold
AUX pin rising with respect to
V
EE
2.4
2.5
2.65
V
AUX Pin Threshold Hysteresis
AUX pin falling with respect to
V
EE
0.4
0.5
0.6
V
ZAUX
AUX Pin Input Impedance
AUX = 0.5V
350
k
Ω
I
INRUSH
Inrush Current Limit
V
EE = 0V, RTN = 3.0V
70
100
130
mA
ILIM
DC Current Limit
V
EE = 0V, RTN = 3.0V,
Temp = 0˚C to 85˚C
350
390
420
mA
ILIM
DC Current Limit
V
EE = 0V, RTN = 3.0V,
Temp = -40˚C to 125˚C
325
390
420
mA
Startup Regulator
VinMin
Operational VIN Input Voltage
AUX = 5V
9.5
V
VccReg
V
CC Regulation
Open ckt
7.5
7.8
8.1
V
V
CC Current Limit
(Note 4)
15
20
mA
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