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LTC4268IDKD-1#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P46
42681fc
LTC4268-1
7
TEMPERATURE (°C)
–50
V
CC
(V)
15
25
42681 G10
12
10
–25 0 50
9
8
16
14
13
11
75 100 125
V
CC(ON)
V
CC(OFF)
TEMPERATURE (°C)
–50
I
VCC
(µA)
200
250
300
25 75
42681 G11
150
100
–25 0
50 100 125
50
0
TEMPERATURE (°C)
–50
8
9
25 75
42681 G12
7
6
–25 0
50 100 125
5
4
3
10
I
VCC
(mA)
DYNAMIC CURRENT C
PG
= 1nF,
C
SG
= 1nF, f
OSC
= 100kHz
STATIC PART CURRENT
V
CC
= 14V
TEMPERATURE (°C)
–50
90
SENSE VOLTAGE (mV)
92
96
98
100
110
104
0
50
75
42681 G13
94
106
108
102
–25
25
100
125
FB = 1.1V
SENSE = V
SENSE
+
WITH V
SENSE
–
= 0V
TEMPERATURE (°C)
–50
SENSE VOLTAGE (mV)
215
25
42681 G14
200
190
–25 0 50
185
180
220
210
205
195
75 100 125
SENSE = V
SENSE
+
WITH V
SENSE
–
= 0V
TEMPERATURE (°C)
–50
90
f
OSC
(kHz)
92
96
98
100
110
104
0
50
75
42681 G15
94
106
108
102
–25
25
100
125
C
OSC
= 100pF
TEMPERATURE (°C)
–50
1.230
V
FB
(V)
1.231
1.233
1.234
1.235
1.240
1.237
0
50
75
42681 G16
1.232
1.238
1.239
1.236
–25
25
100
125
TEMPERATURE (°C)
–50
FEEDBACK PIN INPUT BIAS (nA)
200
250
300
25 75
42681 G17
150
100
–25 0
50 100 125
50
0
R
CMP
OPEN
TEMPERATURE (°C)
–50
V
FB
RESET (V)
1.03
25
42681 G18
1.00
0.98
–25 0 50
0.97
0.96
1.04
1.02
1.01
0.99
75 100 125
Typical perForMance characTerisTics
V
CC(ON)
and V
CC(OFF)
vs Temperature
V
CC
Start-Up Current
vs Temperature
V
CC
Current vs Temperature
SENSE Voltage vs Temperature
SENSE Fault Voltage
vs Temperature
Oscillator Frequency
vs Temperature
V
FB
vs Temperature
Feedback Pin Input Bias
vs Temperature
V
FB
Reset vs Temperature
LTC4268-1
8
42681fc
V
FB
(V)
0.9
–70
I
VCMP
(µA)
–50
–30
–10
70
30
1
1.1
1.4
50
10
1.2
1.3
1.5
42681 G19
125°C
25°C
–40°C
TEMPERATURE (°C)
–50
I
VCMP
(µA)
60
65
70
25 75
42681 G20
55
50
–25 0
50 100 125
45
40
SOURCE CURRENT
V
FB
= 1.1V
SINK
CURRENT
V
FB
= 1.4V
TEMPERATURE (°C)
–50
900
g
m
(µmho)
950
1000
1050
1100
–25 0 25 50
42681 G21
75 100 125
TEMPERATURE (°C)
–50
A
V
(V/V)
1550
25
42681 G22
1400
1300
–25 0 50
1250
1200
1150
1100
1600
1650
1700
1500
1450
1350
75 100 125
TEMPERATURE (°C)
–50
UVLO (V)
1.240
1.245
1.250
25 75
42681 G23
1.235
1.230
–25 0
50 100 125
1.225
1.220
TEMPERATURE (°C)
–50
3.4
3.5
3.7
25 75
42681 G24
3.3
3.2
–25 0
50 100 125
3.1
3.0
3.6
I
UVLO
(µA)
TEMPERATURE (°C)
–50
SFST CHARGE CURRENT (µA)
23
25
42681 G25
20
18
–25 0 50
17
16
15
22
21
19
75 100 125
CAPACITANCE (nF)
0
TIME (ns)
80
70
60
50
40
30
20
10
0
8
42681 G26
2 4 6 1071 3 5 9
T
A
= 25°C
FALL TIME
RISE TIME
Typical perForMance characTerisTics
Feedback Amplifier Output
Current vs V
FB
Feedback Amplifier Source and
Sink Current vs Temperature
Feedback Amplifier g
m
vs Temperature
Feedback Amplifier Voltage Gain
vs Temperature
UVLO vs Temperature
I
UVLO
Hysteresis vs Temperature
Soft-Start Charge Current
vs Temperature
PG, SG Rise and Fall Times
vs Load Capacitance
42681fc
LTC4268-1
9
TEMPERATURE (°C)
–50 –25
19.0
V
CC
(V)
20.0
21.5
0
50
75
42681 G27
19.5
21.0
20.5
25
100
125
I
CC
= 10mA
TEMPERATURE (°C)
–50
t
ON(MIN)
(ns)
330
25
42681 G28
300
280
–25 0 50
270
260
340
320
310
290
75 100 125
R
tON(MIN)
= 158k
TEMPERATURE (°C)
–50
0
t
PGDLY
(ns)
50
150
200
250
0
50
75
42681 G29
100
–25 25
100 125
300
R
PGDLY
= 16.9k
R
PGDLY
= 27.4k
TEMPERATURE (°C)
–50
t
ENDLY
(ns)
285
305
325
25 75
42681 G30
265
245
–25 0
50 100 125
225
205
R
ENDLY
= 90k
V
CC
Clamp Voltage
vs Temperature
Typical perForMance characTerisTics
Minimum PG On Time
vs Temperature
PG Delay Time vs Temperature
Enable Delay Time
vs Temperature
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P46

LTC4268IDKD-1#TRPBF

Mfr. #:
Buy LTC4268IDKD-1#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Power Switch ICs - POE / LAN EEE 802.3af High Power PD with Synchronous NoOpto Flyback Controller
Lifecycle:
New from this manufacturer.
Delivery:
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