IC PD/OPTO FLYBACK CTRLR 32-DFN

LTC4269CDKD-1#PBF

Manufacturer Part NumberLTC4269CDKD-1#PBF
DescriptionIC PD/OPTO FLYBACK CTRLR 32-DFN
ManufacturerLinear Technology
TypePower Over Ethernet (PoE)
LTC4269CDKD-1#PBF datasheet
 

Specifications of LTC4269CDKD-1#PBF

ApplicationsPower Interface Switch for Power Over Ethernet (PoE) DevicesVoltage - Supply14 V ~ 16 V
Operating Temperature0°C ~ 70°CMounting TypeSurface Mount
Package / Case32-DFNCurrent - Supply1.35mA
InterfaceIEEE 802.3afController TypePowered Device Interface Controller (PD)
Input Voltage60VSupply Current6.4mA
Digital Ic Case StyleDFNNo. Of Pins32
Duty Cycle (%)88%Frequency100kHz
Operating Temperature Range0°C To +70°CMslMSL 1 - Unlimited
Rohs CompliantYesOperating Temperature (max)70C
Operating Temperature (min)0CPin Count32
MountingSurface MountPackage TypeDFN EP
Case Length7mmScreening LevelCommercial
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
PARAMETER
Interface Controller (Note 4)
Operating Input Voltage
Signature Range
Classifi cation Range
ON Voltage
OFF Voltage
Overvoltage Lockout
ON/OFF Hysteresis Window
Signature/Class Hysteresis Window
Reset Threshold
Supply Current
Supply Current at 57V
Class 0 Current
Signature
Signature Resistance
Invalid Signature Resistance, SHDN Invoked
Invalid Signature Resistance During Mark Event (Notes 6, 7)
Classifi cation
Class Accuracy
Classifi cation Stability Time
Normal Operation
Inrush Current
Power FET On-Resistance
Power FET Leakage Current at V
NEG
Digital Interface
SHDN Input High Level Voltage
SHDN Input Low Level Voltage
SHDN Input Resistance
PWRGD, T2P Output Low Voltage
PWRGD, T2P Leakage Current
PWRGD Output Low Voltage
PWRGD Clamp Voltage
PWRGD Leakage Current
l
The
denotes the specifi cations which apply over the full operating
= 25°C.
A
CONDITIONS
At V
(Note 5)
PORTP
State Machine Reset for 2-Event Classifi cation
Measured at V
Pin
PORTP
V
= 17.5V, No R
Resistor
PORTP
CLASS
1.5V ≤ V
≤ 9.8V (Note 6)
PORTP
1.5V ≤ V
≤ 9.8V, V
= 3V (Note 6)
PORTP
SHDN
10mA < I
< 40mA, 12.5V < V
< 21V
CLASS
PORTP
(Notes 8, 9)
V
Pin Step to 17.5V, R
= 30.9, I
PORTP
CLASS
CLASS
3.5% of Ideal Value (Notes 8, 9)
V
= 54V, V
= 3V
PORTP
NEG
Tested at 600mA into V
, V
= 54V
NEG
PORTP
V
= SHDN = V
= 57V
PORTP
NEG
V
= 9.8V, SHDN = 9.65V
PORTP
= 54V. For T2P, Must Complete
Tested at 1mA, V
PORTP
2-Event Classifi cation to See Active Low
Pin Voltage Pulled 57V, V
= V
= 0V
PORTP
PORTN
Tested at 0.5mA, V
= 52V, V
= 48V, Output
PORTP
NEG
Voltage Is with Respect to V
NEG
Tested at 2mA, V
= 0V, Voltage with Respect to V
NEG
V
= 11V, V
= 0V, Voltage with Respect to V
PWRGD
NEG
LTC4269-1
MIN
TYP
MAX
60
l
1.5
9.8
l
12.5
21
l
37.2
l
30.0
71
l
4.1
l
1.4
l
2.57
5.40
l
1.35
l
0.40
l
23.25
26
l
11
l
11
l
±3.5
l
Within
1
l
60
100
180
l
0.7
1.0
l
1
l
3
l
0.45
l
100
l
0.15
l
1
l
0.4
l
12
16.5
NEG
l
1
NEG
UNITS
V
V
V
V
V
V
V
V
V
mA
mA
%
ms
mA
Ω
μA
V
V
V
μA
V
V
μA
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3