LTC4263 LINER [Linear Technology], LTC4263 Datasheet - Page 3

• Manufacturer Part Number: LTC4263
• Description: Single IEEE 802.3af Compliant PSE Controller with Internal Switch
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
SYMBOL
V
V
V
I
I
Power MOSFET
R
I
R
Current Control
I
I
I
I
I
Detection
I
V
R
R
R
Classifi cation
V
I
I
Power Management
V
I
AC Disconnect
R
I
f
temperature range, otherwise specifi cations are at T
relative to V
DD48
DD5
OUT_LEAK
CUT
LIM
FB
MIN
FAULT
DET
CLASS
TCLASS
PWRMGT
OSC
OSC
OVLO_OFF
OVLO_HYS
DD5
DET
CLASS
PWRMGT
ON
PU
DETMIN
DETMAX
OPEN
OSC
PARAMETER
OVLO Turn-Off Voltage
OVLO Hysteresis
V
V
V
V
On-Resistance
OUT Pin Leakage
OUT Pin Pull-Up Resistance to V
Overload Current Threshold
Short-Circuit Current Limit
Foldback Current Limit
DC Disconnect Current Threshold
High Speed Fault Current Limit
Detection Current
Detection Voltage Compliance
Minimum Valid Signature Resistance
Maximum Valid Signature Resistance
Open Circuit Threshold
Classifi cation Voltage
Classifi cation Current Compliance
Classifi cation Threshold Current
Power Management Pin Threshold
Power Management Pin Output Current
OSC Pin Input Impedance
OSC Pin Output Current
OSC Pin Frequency
SS
DD5
DD5
DD48
DD5
unless otherwise noted. (Notes 2, 5)
Supply Voltage
Internal Supply
Supply Current
Supply Current
DD48
A
= 25°C. V
CONDITIONS
V
Driven Externally
Driven Internally
V
Internal V
V
I = 350mA, Measured From OUT to V
V
0V ≤ (V
Class 0, Class 3, Class 4 (Note 6)
Class 2
Class 1
V
V
V
V
(Note 8)
First Point, V
Second Point, V
V
V
V
V
Class 0 – 1
Class 1 – 2
Class 2 – 3 (Note 9)
Class 0, Class 3, Class 4
Class 1
Class 2
2V ≤ (V
V
V
DD48
DD5
DD5
OUT
OUT
DD48
DD48
DD48
DD48
DD48
DD48
OUT
OSC
OSC
The
– V
– V
– V
– V
– V
– V
= V
– V
– V
– V
– V
– V
– V
– V
l
DD48
DD48
OSC
SS
SS
SS
SS
SS
SS
DD48
denotes the specifi cations which apply over the full operating
DD5
SS
OUT
OUT
OUT
OUT
SS
OUT
– V
= 5V
= 5V
= V
= 5V
= 2V
= 2V
– V
Increasing
– V
= 57V
DD48
, Open Port
, 0mA ≤ I
= 30V
= 0V (Note 7)
= 10V
SS
DD48
OUT
DD48
SS
) ≤ 3V
– V
) ≤ 5V
= 48V and V
– V
– V
OUT
CLASS
SS
OUT
= 10V
= 57V
≤ 50mA
= 3.5V
DD5
SS
not driven externally. All voltages are
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
–75.6
–19.6
–34.3
–140
15.5
27.5
16.5
13.5
21.5
0.98
MIN
360
355
165
405
405
110
500
235
160
500
175
103
0.2
4.5
4.3
5.2
5.5
66
95
30
55
–72.3
–18.8
–32.8
29.7
14.5
TYP
500
375
175
100
425
425
140
650
255
180
250
110
4.4
1.5
7.5
6.5
70
60
17
60
23
5
1
2
1
1
1
LTC4263
–17.9
–31.3
2000
MAX
18.5
20.5
15.5
24.5
1.02
640
395
185
105
445
445
120
180
800
275
200
–69
325
140
115
5.5
4.5
2.4
3.0
9.8
7.5
74
10
21
32
75
2
2
4
2
UNITS
4263fd
3
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
kΩ
kΩ
kΩ
kΩ
kΩ
μA
μA
μA
μA
μA
μA
μA
Hz
Ω
Ω
V
V
V
V
V
V
V