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LTC4269IDKD-2#TRPBF
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P34
L
TC4269-2
7
42692fb
T
y
p
i
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a
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p
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F
o
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M
a
n
c
e
c
h
a
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a
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T
e
r
i
s
T
i
c
s
Switching Frequency
vs T
emperature
V
IN
Shutdown Current
vs T
emperature
V
IN
Start-Up Current
vs T
emperature
I
Q
(V
IN
) vs T
emperature
SD_V
SEC
T
urn On Threshold
vs T
emperature
SD_V
SEC
Pin Current
vs T
emperature
V
IN
T
urn On/Off Voltage
vs T
emperature
COMP Active Threshold
vs T
emperature
COMP Source Current
vs T
emperature
TEMPERATURE (°C)
–50
155
SWITCHING FREQUENCY (kHz)
185
245
0
50
75
42692 G10
170
230
215
200
–25
25
100
125
TEMPERATURE (°C)
–50
100
V
IN
SHUTDOWN CURRENT (µA)
200
500
0
50
75
42692 G11
150
400
300
450
350
250
–25
25
100
125
V
IN
= 15V
SD_V
SEC
= 0V
TEMPERATURE (°C)
–50
3.5
I
Q
(mA)
4.5
6.5
0
50
75
42692 G13
4.0
6.0
5.5
5.0
–25
25
100
125
OC = OPEN
TEMPERATURE (°C)
–50
1.22
SD_V
SEC
TURN ON THRESHOLD (V)
1.27
1.42
0
50
75
42692 G14
1.37
1.32
–25
25
100
125
TEMPERATURE (°C)
–50
0
SD_V
SEC
PIN CURRENT (µA)
15
0
50
75
42692 G15
10
5
–25
25
100
125
0mA PIN CURRENT AFTER
PART TURN ON
PIN CURRENT BEFORE
PART TURN ON
TEMPERATURE (°C)
–50
0
COMP (V)
0.4
1.6
1.4
1.2
0
50
75
42692 G17
0.2
1.0
0.8
0.6
–25
25
100
125
R
ISENSE
= 0k
TEMPERATURE (°C)
–50
5.0
COMP SOURCE CURRENT (mA)
12.5
0
50
75
42692 G18
10.0
7.5
–25
25
100
125
CURRENT OUT OF PIN
FB = 1V
COMP = 1.6V
TEMPERATURE (°C)
–50
V
IN
STARTUP CURRENT (µA)
200
500
0
50
75
42692 G12
400
300
450
600
550
350
250
–25
25
100
125
SD_V
SEC
= 1.4V
TEMPERATURE (°C)
–50
6
8
V
IN
(V)
18
16
14
12
0
50
75
42692 G16
10
–25
25
100
125
V
IN
TURN OFF VOLTAGE
V
IN
TURN ON VOLTAGE
L
TC4269-2
8
42692fb
T
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p
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a
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h
a
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a
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T
e
r
i
s
T
i
c
s
COMP Sink Current
vs T
emperature
(Disabled) COMP Pin Current
vs T
emperature
I
SENSE
Maximum Threshold
vs COMP
I
SENSE
Maximum Threshold
vs T
emperature
I
SENSE
Pin Current (Out of Pin)
vs Duty Cycle
I
SENSE
Maximum Threshold
vs Duty Cycle (Programming
Slope Compensation)
OC (Overcurrent) Threshold
vs T
emperature
Blank Duration vs T
emperature
BLANK Duration vs R
BLANK
TEMPERATURE (°C)
–50
5.0
COMP SINK CURRENT (mA)
12.5
0
50
75
42692 G19
10.0
7.5
–25
25
100
125
FB = 1.4V
COMP = 1.6V
TEMPERATURE (°C)
–50
0
COMP PIN CURRENT (µA)
50
40
30
0
50
75
42692 G20
10
20
–25
25
100
125
FB = V
REF
COMP = 1.6V
COMP (V)
0
0
I
SENSE
MAX THRESHOLD (mV)
240
160
200
120
1.0
2.0
2.5
42692 G21
40
80
0.5
1.5
3.0
T
A
= 25°C
R
ISENSE
= 0k
OC THRESHOLD
TEMPERATURE (°C)
–50
200
I
SENSE
MAX THRESHOLD (mV)
210
240
0
50
75
42692 G22
230
220
–25
25
100
125
COMP = 2.5V
R
ISENSE
= 0k
DUTY CYCLE (%)
0
0
I
SENSE
PIN CURRENT (µA)
10
40
20
50
60
42692 G23
30
20
10
30
40
80
70
90
100
T
A
= 25°C
DUTY CYCLE (%)
0
175
185
I
SENSE
MAX THRESHOLD (mV)
195
225
20
50
60
42692 G24
215
205
10
30
40
80
70
90
100
R
SLOPE
= 1k
R
SLOPE
= 470Ω
R
SLOPE
= 0Ω
T
A
= 25°C
COMP = 2.5V
TEMPERATURE (°C)
–50
80
OC THRESHOLD (mV)
90
120
0
50
75
42692 G25
110
100
–25
25
100
125
PRECISION OVERCURRENT THRESHOLD
INDEPENDENT OF DUTY CYCLE
TEMPERATURE (°C)
–50
0
BLANK DURATION (ns)
200
800
0
50
75
42692 G26
600
400
–25
25
100
125
R
BLANK
= 40k
R
BLANK
= 120k
R
BLANK
(k)
0
0
BLANK (ns)
400
200
1000
40
80
100
42692 G27
800
600
20
60
140
120
160
T
A
= 25°C
L
TC4269-2
9
42692fb
T
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p
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a
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p
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a
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T
e
r
i
s
T
i
c
s
t
DELA
Y
: SOUT Rise to OUT Rise
vs T
emperature
t
DELA
Y
: SOUT Rise to OUT Rise
vs R
DELA
Y
OUT Rise/Fall Time vs OUT Load
Capacitance
OUT
: Max Duty Cycle vs f
OSC
OUT
: Max Duty Cycle CLAMP
vs SD_V
SEC
OUT
: Max Duty Cycle CLAMP
vs SS_MAXDC
SS_MAXDC Setting vs f
OSC
(for OUT DC = 72%)
SS_MAXDC Reset and Active
Thresholds vs T
emperature
TEMPERATURE (°C)
–50
0
t
DELAY
(ns)
50
200
0
50
75
42692 G28
150
100
–25
25
100
125
R
DELAY
= 40k
R
DELAY
= 120k
R
DELAY
(k)
0
0
t
DELAY
(ns)
80
240
80
160
200
42692 G29
160
40
120
240
T
A
= 25°C
OUT LOAD CAPACITANCE (pF)
0
0
OUT RISE/FALL TIME (ns)
50
25
125
2000
3000
100
75
1000
4000
5000
t
r
t
f
42692 G30
T
A
= 25°C
f
OSC
(kHz)
100
70
OUT DUTY CYCLE (%)
80
100
200
300
90
400
500
42692 G31
T
A
= 25°C
SS_MAXDC = 2.5V
SD_V
SEC
= 1.4V
SD_V
SEC
(V)
1.32
0
70
OUT MAX DUTY CYCLE CLAMP (%)
80
90
1.65
1.98
60
50
40
30
20
10
2.31
2.64
42692 G32
T
A
= 25°C
SS_MAXDC = 1.84V
f
OSC
= 200kHz
R
DELAY
= 10k
SS_MAXDC (V)
1.60
20
70
OUT MAX DUTY CYCLE CLAMP (%)
80
90
1.84
2.08
60
50
40
30
42692 G33
T
A
= 25°C
f
OSC
= 200kHz
R
DELAY
= 10k
SD_V
SEC
= 1.32V
SD_V
SEC
= 1.98V
SD_V
SEC
= 2.64V
f
OSC
(kHz)
100
1.60
2.08
SS_MAXDC (V)
2.20
2.32
500
400
300
200
1.96
1.84
1.72
42692 G34
T
A
= 25°C
SD_V
SEC
= 1.32V
R
DELAY
= 10k
0
0.8
SS_MAXDC (mV)
1.0
1.2
0.6
0.4
0.2
42692 G35
TEMPERATURE (°C)
–50
0
50
75
–25
25
100
125
ACTIVE THRESHOLD
RESET THRESHOLD
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P34
LTC4269IDKD-2#TRPBF
Mfr. #:
Buy LTC4269IDKD-2#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Power Switch ICs - POE / LAN IEEE802.3at High Power PD Controller with Forward Switcher
Lifecycle:
New from this manufacturer.
Delivery:
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