lm5071mtx-80 National Semiconductor Corporation, lm5071mtx-80 Datasheet - Page 6

• Manufacturer Part Number: lm5071mtx-80
• Description: Power Over Ethernet Pd Controller With Auxiliary Power Interface
• Manufacturer: National Semiconductor Corporation

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Thermal Shutdown
Tsd
Thermal Shutdown
Hysteresis
Thermal Resistance
θ
JA
Electrical Characteristics
Specifications in standard type face are for T
perature range. Unless otherwise specified: V
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. The absolute maximum rating of V
is derated to (-0.3V to 76V) at -40˚C.
Note 2: For detailed information on soldering the plastic TSSOP package, refer to the Packaging Databook available from National Semiconductor.
Note 3: Min and Max limits are 100% production tested at 25 ˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical
Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 4: Device thermal limitations may limit usable range.
Note 5: Specification applies to the oscillator frequency. The operational frequency of the LM5071-50 devices is divided by two.
Note 6: The Vcc regulator requires an external source whenever the Vin pin is below 13V with respect to RTN. An external load on Vcc increases this startup voltage
requirement.
Symbol
Junction to Ambient
Thermal Shutdown Temp.
Parameter
(Note 3) (Continued)
J
IN
= +25˚C and those in boldface type apply over the full operating junction tem-
= 48V, V
MT Package
CC
= 10V, RT = 30.3kΩ.
6
Conditions
Min
Typ
165
125
25
Max
IN
, RTN to V
Units
˚C/W
˚C
˚C
EE