LTC4269IDKD-2#PBF Linear Technology, LTC4269IDKD-2#PBF Datasheet - Page 8

• Manufacturer Part Number: LTC4269IDKD-2#PBF
• Description: IC PD/SYNC FORWARD CTRLR 32-DFN
• Manufacturer: Linear Technology
• Type: Power Over Ethernet (PoE)r

Specifications of LTC4269IDKD-2#PBF

• Applications: Power Interface Switch for Power Over Ethernet (PoE) Devices
• Voltage - Supply: 14 V ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-DFN
• Current - Supply: 1.35mA
• Interface: IEEE 802.3af
• Controller Type: Powered Device Interface Controller (PD)
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 32
• Mounting: Surface Mount
• Package Type: DFN EP
• Case Length: 7mm
• Screening Level: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LTC4269-2
Typical perForMance characTerisTics

12.5
10.0
220
200
120
110
100
240
230
210
7.5
5.0
90
80
–50
–50
–50
COMP Sink Current
vs Temperature
I
vs Temperature
OC (Overcurrent) Threshold
vs Temperature
FB = 1.4V
COMP = 1.6V
SENSE
PRECISION OVERCURRENT THRESHOLD
INDEPENDENT OF DUTY CYCLE
COMP = 2.5V
R
ISENSE
–25
–25
–25
Maximum Threshold
= 0k
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
50
50
50
75
75
75
100
100
100
42692 G19
42692 G22
42692 G25
125
125
125
400
800
600
200
20
50
40
30
20
10
40
30
10
0
0
0
–50
–50
0
(Disabled) COMP Pin Current
vs Temperature
I
vs Duty Cycle
Blank Duration vs Temperature
T
FB = V
COMP = 1.6V
SENSE
A
10
= 25°C
–25
–25
REF
20
Pin Current (Out of Pin)
0
0
30 40
TEMPERATURE (°C)
TEMPERATURE (°C)
DUTY CYCLE (%)
R
R
BLANK
BLANK
25
25
50 60
= 120k
= 40k
50
50
70
75
75
80
100
100
42692 G20
42692 G23
42692 G26
90 100
125
125
1000
205
185
175
600
240
200
160
120
225
215
195
800
400
200
80
40
0
0
0
0
0
I
vs COMP
I
vs Duty Cycle (Programming
Slope Compensation)
BLANK Duration vs R
T
COMP = 2.5V
SENSE
T
R
SENSE
T
A
A
A
ISENSE
= 25°C
10
= 25°C
= 25°C
20
0.5
20
Maximum Threshold
Maximum Threshold
= 0k
40
30 40
1.0
DUTY CYCLE (%)
60
R
COMP (V)
BLANK
1.5
50 60
80
(k)
100
R
R
R
BLANK
OC THRESHOLD
2.0
SLOPE
SLOPE
SLOPE
70
120
80
= 0
= 470
= 1k
2.5
140
42692 G21
42692 G24
42692 G27
90 100
42692fb
160
3.0