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LTC4269CDKD-2#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P34
LTC4269-2
7
42692fb
Typical perForMance characTerisTics
Switching Frequency
vs Temperature
V
IN
Shutdown Current
vs Temperature
V
IN
Start-Up Current
vs Temperature
I
Q
(V
IN
) vs Temperature
SD_V
SEC
Turn On Threshold
vs Temperature
SD_V
SEC
Pin Current
vs Temperature
V
IN
Turn On/Off Voltage
vs Temperature
COMP Active Threshold
vs Temperature
COMP Source Current
vs Temperature
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
LTC4269-2
8
42692fb
Typical perForMance characTerisTics
COMP Sink Current
vs Temperature
(Disabled) COMP Pin Current
vs Temperature
I
SENSE
Maximum Threshold
vs COMP
I
SENSE
Maximum Threshold
vs Temperature
I
SENSE
Pin Current (Out of Pin)
vs Duty Cycle
I
SENSE
Maximum Threshold
vs Duty Cycle (Programming
Slope Compensation)
OC (Overcurrent) Threshold
vs Temperature
Blank Duration vs Temperature
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
LTC4269-2
9
42692fb
Typical perForMance characTerisTics
t
DELAY
: SOUT Rise to OUT Rise
vs Temperature
t
DELAY
: SOUT Rise to OUT Rise
vs R
DELAY
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 Temperature
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
500400300200
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
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LTC4269CDKD-2#TRPBF

Mfr. #:
Buy LTC4269CDKD-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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