LTC4258 LINER [Linear Technology], LTC4258 Datasheet - Page 2

• Manufacturer Part Number: LTC4258
• Description: Quad IEEE 802.3af Power over Ethernet Controller with Integrated Detection
• Manufacturer: LINER [Linear Technology]

ABSOLUTE AXI U RATI GS
temperature range, otherwise specifications are at T
(Note 5).
LTC4258
(Note 1)
Supply Voltages
Digital Pins
Analog Pins
Operating Ambient Temperature Range ...... 0 C to 70 C
Junction Temperature (Note 5) ............................ 150 C
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
ELECTRICAL CHARACTERISTICS
SYMBOL
Power Supplies
V
V
I
I
V
V
V
Detection
I
V
R
R
Classification
V
I
2
DD
EE
DET
CLASS
DD
EE
DDMIN
EEMINON
EEMINOFF
DET
CLASS
DETMIN
DETMAX
V
V
DGND to AGND (Note 2) .................................... 1V
SCL, SDAIN, SDAOUT, INT, AUTO, RESET
SHDN n , AD n ................. DGND – 0.3V to DGND + 5V
GATE n (Note 3) ................... V
DETECT n ...................... DGND –20V to DGND +0.3V
SENSE n ................................. V
OUT n .................................... V
OSCIN .......................... DGND – 0.3V to DGND + 5V
BYP Current ................................................. 0.1mA
DD
EE
to AGND ......................................... 0.3V to – 70V
to DGND .......................................... – 0.3V to 5V
PARAMETER
V
V
V
V
V
V
V
Detection Current
Detection Voltage Compliance
Minimum Valid Signature Resistance
Maximum Valid Signature Resistance
Classification Voltage
Classification Current Compliance
DD
EE
DD
EE
DD
EE
EE
Supply Voltage
Supply Current
UVLO Voltage (Turning On)
UVLO Voltage (Turning Off)
Supply Voltage
Supply Current
UVLO Voltage
W
W W
EE
EE
EE
– 0.3V to V
– 70V to V
– 0.3V to V
CONDITIONS
To Maintain IEEE Compliant Output (Note 6)
Normal Operation
During Classification Into Short (V
V
V
First Point, V
Second Point, V
Open Circuit, Measured at DETECT n Pin
0mA < I
Into Short (V
EE
EE
U
A
– AGND
– AGND
= 25 C. AGND = DGND = 0V, V
EE
EE
CLASS
EE
+ 12V
+ 70V
The
+ 1V
DETECT n
DETECT
< 31mA
DETECT n
denotes the specifications which apply over the full operating
= 0V)
= –10V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
= –3.5V
DETECT1
DETECT2
DETECT3
DETECT4
SDAOUT
SHDN1
SHDN2
RESET
SDAIN
DETECT n
DGND
BYP
SCL
AD3
AD2
AD1
AD0
V
INT
T
DD
JMAX
36-LEAD PLASTIC SSOP
10
11
12
13
14
15
16
17
18
DD
1
2
3
4
5
6
7
8
9
= 150 C,
= 0V)
GW PACKAGE
= 3.3V, V
TOP VIEW
JA
= 80 C/W
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
EE
NC
AUTO
OUT1
GATE1
SENSE1
OUT2
GATE2
SENSE2
V
OUT3
GATE3
SENSE3
OUT4
GATE4
SENSE4
AGND
SHDN4
SHDN3
= –48V unless otherwise noted
EE
–16.4
15.2
26.7
MIN
–48
235
145
55
3
U
TYP
–31
–28
–20
3.3
2.5
2.7
–2
17
29
LTC4258CGW
ORDER PART
W
NUMBER
MAX
–57
300
190
–23
–21
–5
85
19
33
75
4
5
UNITS
U
4258p
mA
mA
mA
mA
k
k
V
V
V
V
V
A
A
V
V