LTC4267CDHC-3#PBF Linear Technology, LTC4267CDHC-3#PBF Datasheet - Page 3

• Manufacturer Part Number: LTC4267CDHC-3#PBF
• Description: IC POE 802.3AF W/REG 16-DFN
• Manufacturer: Linear Technology

Specifications of LTC4267CDHC-3#PBF

• 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-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
V
V
V
V
V
V
I
I
I
CLASS
∆I
R
R
V
V
R
V
V
V
I
R
V
I
V
I
g
∆V
∆V
I
VPORTN_ON
PVCC_ON
VPORTN_
PG_LEAK
THSTART
FB
POUT_LEAK
TURNON
TURNOFF
m
PORTN
HYST
CLAMP1mA
MARGIN
IH
IL
PG_OUT
PG _FALL
PG_RISE
ITHSHDN
FB
SIGNATURE
INVALID
INPUT
ON
CLASS
O(LINE)
O(LOAD)
PARAMETER
Supply Voltage
Maximum Operating Voltage
Signature Range
Classifi cation Range
UVLO Turn-On Voltage
UVLO Turn-Off Voltage
P
P
P
P
V
V
P
Normal Operation
Start-Up
V
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
VCC
VCC
VCC
VCC
CLAMP1mA
PORTN
VCC
PORTN
FB
OUT
Input Current
Turn-On Voltage
Turn-Off Voltage
Hysteresis
Shunt Regulator Voltage
Supply Current
Leakage
Supply Current when ON
Supply Current During
– V
TURNON
Margin
TH
/RUN)
TH
/RUN
CONDITIONS
Voltage with Respect to V
(Notes 4, 5, 6)
Voltage with Respect to PGND
Voltage with Respect to PGND
V
I
to PGND
V
(Note 7)
V
P
V
SIGDISA Floating (Note 8)
10mA < I
(Note 9)
–1.5V ≤ V
802.3af 2-Point Measurement (Notes 4, 5)
–1.5V ≤ V
V
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
PWRGD Referenced to V
V
(Note 11)
P
P
V
I = 300mA, V
to P
P
V
Referenced to PGND, P
P
I
V
I
I
V
PVCC
TH
TH
TH
TURNON
PORTN
ITH
VCC
PORTN
PORTP
PORTN
OUT
OUT
PORTN
VCC
ITH
VCC
TURNOFF
PORTN
/RUN Sourcing 5µA, P
/RUN Pin Load = ±5µA (Note 12)
/RUN Sinking 5µA, P
OUT
/RUN – PGND = 1.3V
/RUN – PGND = 0V, P
– PGND = V
– PGND = VT
= 1mA, V
Falling
Rising
– P
A
, IEEE 802.3af 2-Point Measurement (Notes
= 0V, Power MOSFET Off, P
= –48V, P
= –17.5V, P
= –48V, Voltage between V
= 0V, PWRGD FET Off, V
(Note 11)
= 25°C. (Note 3)
– V
GND
CLASS
< P
PORTN
PORTN
PORTN
TURNOFF
VCC
PORTN
= 8V (Note 12)
The
ITH
< 40mA, –12.5V ≤ V
≤ –9.5V, P
≤ – 9.5V, SIGDISA and P
= –48V,
TURNON
< V
OUT
/RUN = 0V, Voltage with Respect
PORTN
PORTN
PORTN
URNON
OUT
●
= –48V, Measured from V
CLAMP
, PWRGD, SIGDISA Floating
denotes the specifi cations which apply over the full operating
Tied to V
VCC
VCC
PORTN
VCC
+ 100mV
– 100mV
PORTP
VCC
OUT
(Note 12)
– P
– P
– P
– P
Tied to V
GND
GND
PWRGD
Pin
PORTP
GND
GND
OUT
PORTN
PORTN
= 8V (Note 12)
= 8V (Note 12)
= 8V (Note 12)
= 57V (Note 13)
, R
= 8V
= 57V
PORTP
CLASS
OUT
and P
≤ –21V
Tied to
PORTN
, IEEE
,
OUT
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
–12.5
–34.8
–29.3
23.25
0.780
–1.5
0.05
0.35
0.15
MIN
100
200
7.6
4.6
8.3
1.3
2.7
0.2
1
3
–30.5
0.800
LTC4267-3
0.28
0.05
TYP
–36
240
333
8.7
5.7
9.4
0.6
0.5
1.5
0.3
40
10
3
9
3
1
3
3
–37.2
–31.5
26.00
0.812
MAX
–9.5
10.3
0.65
±3.5
11.8
0.45
0.45
–57
–21
350
500
150
9.2
0.5
1.7
3.3
1.6
0.4
90
57
50
7
3
1
2
mV/µA
mV/µA
UNITS
mV/V
3
42673f
µA/V
mA
mA
kΩ
kΩ
kΩ
µA
µA
µA
µA
nA
µA
%
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V