LTC4274
27
4274fd
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
REVISION HISTORY
REV
DATE DESCRIPTION
PAGE NUMBER
A 4/11
Revised entire data sheet.
1 to 28
B
6/11
Added separate t
LIM
entry and revised t
CUT
and t
DIS
entries in the Electrical Characteristics section.
Revised curves G17, G19 and G21 in the Typical Performance Characteristics section.
Revised the AUTO pin description in the Pin Functions section.
Minor text edits in the Operating Modes, Current Limit, I
LIM
Foldback and MOSFET Fault Detection sections of the
Applications Information section.
Replaced Figure 16.
Replaced the Typical Application and revised the Related Parts.
5
9
13
18, 20, 21
23
28
C
9/11
Changed 48 Supply Voltage to Main PoE Supply Voltage.
3
Changed GATE typ voltage to 12V.
3, 12, 20
Revised V
ILD
text under Digital Interface.
4
Added (mA) to Class Compliance axis title.
7
Figure number reference corrected.
18
Revised power supply voltage figures under Power Supplies and Bypassing.
22
Specified SMAJ58A for Zener diode.
28
D
01/12 Revisied MAX value for V
ILD
I
2
C input low voltage
Clarified AUTO Pin mode relationship to Reset pin
4
16
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