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| 型號(hào)： | TPS23841_07 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | HIGH-POWER, WIDE VOLTAGE RANGE, QUAD-PORT ETHERNET POWER SOURCING EQUIPMENT MANAGER |
| 中文描述： | 大功率，寬電壓范圍，四端口以太網(wǎng)供電設(shè)備管理器 |
| 文件頁(yè)數(shù)： | 5/52頁(yè) |
| 文件大?。?/td> | 1011K |
| 代理商： | TPS23841_07 |
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TPS23841
SLUS745–NOVEMBER 2006
ELECTRICAL CHARACTERISTICS (continued)
V48 = 48 V, R
T
= 124 k
, C
T
= 220 pF, C
INT
= 0.027
μ
F (low leakage), –40
°
C to 125
°
C and T
A
= T
J
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Port Legacy Detection
Legacy current limit
Legacy voltage A/D conversion scale
factor
Legacy A/D conversion time
Port Powered Mode
Port on resistance
I
CUT
Over current threshold
I
LIM
Output current limit
I
LIM
-
Threshold delta
I
CUT
Disconnect timer current threshold
T
MPDO
Disconnect detection time
P = N = 48 V
100 mV < V
PORT
< 17.5 V
2.6
3.5
4.3
mA
1365
1400
1445
Count/V
0 V < V
PORT
< 15 V
18
22
ms
20 mA < I
PORT
< 300 mA
R
BIAS
= 124 k
, C
T
= 220 pF,
1.3
615
650
1.8
665
700
70
570
600
10
mA
R
BIAS
= 124 k
, C
T
= 220 pF
I
< current threshold, R
BIAS
= 124 k
, C
T
=
220 pF
7.5
10
400
300
ms
Port output UV
Port output OV
Over current time out
Short circuit time out
Turn--off delay from UV/OV faults
42.0
54
50
50
42.7
55
44.0
56
75
75
V
T
OVLD
T
LIM
R
BIAS
= 124 k
, C
T
= 220 pF
RBIAS = 124 k., CT = 220 pF
RBIAS = 124 k., CT = 220 pF, After port enabled
and ramped up
20 mA < I
PORT
< 56 V
ms
3
Port current A/D conversion scale
factor
Port current A/D conversion time
Port voltage A/D conversion scale
factor
Port voltage A/D conversion time
Port temperature A/D conversion
Port Disable Mode
Port N voltage
AC LO and AC HI Specification
AC_LO, AC_HI – low output voltage
AC_LO – high output voltage
AC_HI – high output voltage
31
36.41
40
Count/m
A
ms
Count/V
I
PORT
< 300 mA
18
22
370
335
353
45 V < V
PORT
< 56 V
18
22
ms
°
C
(17500 - counts)/16
P = 48 V
47
V
0
0.5
5.0
7.0
3.0
5.0
V
5
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