LTC4267CGN-1#TRPBF Linear Technology, LTC4267CGN-1#TRPBF Datasheet - Page 3

• Manufacturer Part Number: LTC4267CGN-1#TRPBF
• Description: IC POE 802.3AF INTERFACE 16SSOP
• Manufacturer: Linear Technology

Specifications of LTC4267CGN-1#TRPBF

• Controller Type: Power over Ethernet Controller (POE)
• Interface: IEEE 802.3af
• Current - Supply: 3mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
V
V
I
I
I
ΔI
R
R
V
V
R
V
V
V
I
R
V
I
V
I
g
ΔV
ΔV
I
I
I
f
DC
DC
VPORTN_ON
PVCC_ON
VPORTN_CLASS
PG_LEAK
THSTART
FB
POUT_LEAK
LIM_HI
LIM_LO
OSC
CLAMP1mA
MARGIN
IH
IL
PG_OUT
SIGNATURE
INVALID
INPUT
m
PG _FALL
PG_RISE
ITHSHDN
FB
ON
CLASS
O(LINE)
O(LOAD)
ON(MIN)
ON(MAX)
PARAMETER
P
V
V
P
V
During Classifi cation
Current Accuracy
During Classifi cation
Signature Resistance
Invalid Signature Resistance
Signature Disable
High Level Input Voltage
Signature Disable
Low Level Input Voltage
Signature Disable, Input Resistance
Power Good Output Low Voltage
Power Good Trip Point
Power Good Leakage Current
On-Resistance
Shutdown Threshold (at I
Start-Up Current Source at I
Regulated Feedback Voltage
V
Error Amplifi er Transconductance
Output Voltage Line Regulation
Output Voltage Load Regulation
P
Input Current Limit, High Level
Input Current Limit, Low Level
Oscillator Frequency
Minimum Switch On Duty Cycle
Maximum Switch On Duty Cycle
Normal Operation
Start-Up
VCC
CLAMP1mA
PORTN
VCC
PORTN
FB
OUT
Input Current
Shunt Regulator Voltage
Supply Current
Leakage
Supply Current when ON
Supply Current
– V
TURNON
Margin
TH
/RUN)
TH
/RUN
CONDITIONS
I
with Respect to PGND
V
(Note 7)
V
P
V
SIGDISA Floating (Note 8)
10mA < I
(Note 9)
–1.5V ≤ V
IEEE 802.3af 2-Point Measurement (Notes 4, 5)
–1.5V ≤ V
V
(Notes 4, 5)
With Respect to V
High Level Invalidates Signature (Note 10)
With Respect to V
Low Level Enables Signature
With Respect to V
I = 1mA V
⎯ P ⎯ W ⎯ R ⎯ G ⎯ D Referenced to V
V
P
P
V
I = 300mA, V
V
P
V
Referenced to PGND, P
P
I
V
I
I
V
P
V
V
V
V
P
V
P
PVCC
TH
TH
TH
PORTN
ITH
VCC
PORTN
PORTP
PORTN
OUT
OUT
PORTN
PORTN
VCC
ITH
VCC
TURNOFF
PORTN
OUT
PORTN
PORTN
ITH
ITH
VCC
ITH
VCC
/RUN Pin Load = ±5μA (Note 11)
/RUN Sinking 5μA, P
/RUN Sourcing 5μA, P
A
/RUN – PGND = 1.3V
/RUN – PGND = 0V, P
/RUN – PGND = 1.3V, P
/RUN – PGND = 1.3V, V
/RUN – PGND = 1.3V, V
– PGND = V
– PGND = V
Falling
Rising
= 57V (Note 12)
= 1mA, V
– P
– P
– P
= 25°C. (Note 3)
= –48V, Voltage between V
, IEEE 802.3af 2-Point Measurement
= –48V, P
= –17.5V, P
= 0V, ⎯ P ⎯ W ⎯ R ⎯ G ⎯ D FET Off, V
to P
= 0V, Power MOSFET Off,
= –48V, P
= –48V, P
GND
GND
GND
CLASS
PORTN
PORTN
< P
PORTN
The
OUT
PORTN
VCC
= 8V (Note 11)
= 8V
= 8V
ITH
< 40mA, –12.5V ≤ V
≤ – 9.5V, P
≤ – 9.5V, SIGDISA and P
= –48V,
●
< V
TURNON
TURNON
OUT
OUT
OUT
/RUN = 0V, Voltage
PORTN
PORTN
PORTN
denotes the specifi cations which apply over the full operating
OUT
= –48V, Measured from
CLAMP
, ⎯ P ⎯ W ⎯ R ⎯ G ⎯ D , SIGDISA Floating
= –43V (Note 13, 14)
= –43V (Note 13, 14)
VCC
Tied to V
VCC
PORTN
– 100mV
+ 100mV
VCC
VCC
(Note 11)
OUT
– P
VCC
FB
FB
– P
– P
– P
– PGND = 0.8V,
– PGND = 0.8V,
PORTN
GND
Tied to V
GND
⎯ P ⎯ W ⎯ R ⎯ G ⎯ D
– P
PORTP
GND
GND
PORTN
GND
= 8V (Note 11)
= 8V (Note 11)
and P
, R
= 8V (Note 11)
= 8V
= 57V
PORTP
= 8V
CLASS
OUT
OUT
≤ –21V
Tied to
,
,
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
23.25
0.780
MIN
0.05
0.35
0.15
100
200
350
180
8.3
1.3
2.7
0.2
90
70
3
LTC4267-1
0.800
0.28
0.05
TYP
240
333
200
9.4
0.6
0.5
1.5
3.0
1.0
0.3
40
10
80
9
3
3
6
26.00
0.812
MAX
10.3
0.65
±3.5
11.8
0.45
0.45
350
500
150
450
205
240
0.5
1.7
3.3
1.6
0.4
90
57
50
90
3
1
2
8
mV/μA
mV/μA
UNITS
mV/V
μA/V
3
42671f
kHz
mA
mA
mA
mA
kΩ
kΩ
kΩ
μA
μA
μA
μA
nA
μA
%
%
%
Ω
Ω
V
V
V
V
V
V
V
V
V