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LM5071 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM5071
Description  Power Over Ethernet PD Controller with Auxiliary Power Power Over Ethernet PD Controller with Auxiliary Power
PDF  18 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM5071 Datasheet(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
www.national.com
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