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參數(shù)資料
| 型號： | 2377-1 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | IEEE 802.3af PoE POWERED DEVICE CONTROLLERS WITH AUTO-RETRY |
| 中文描述： | IEEE 802.3af標(biāo)準(zhǔn)的PoE用電設(shè)備控制器，自動重試 |
| 文件頁數(shù)： | 4/23頁 |
| 文件大小： | 649K |
| 代理商： | 2377-1 |
www.ti.com
TPS2375-1
TPS2377-1
SLVS570–MARCH 2005
ELECTRICAL CHARACTERISTICS (continued)
V
(VDD)
= 48 V, R
(DET)
= 24.9 k
, R
(CLASS)
= 255
, R
(ILIM)
= 178 k
, and –40
°
C
≤
T
J
≤
125
°
C, unless otherwise noted. Positive
currents are into pins. Typical values are at 25
°
C. All voltages are with respect to VSS unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PG
Voltage threshold rising
(3)
V
(RTN)
rising
Delay rising and falling PG
9.5
10
10.5
V
PG deglitch
75
150
225
μs
I
(PG)
= 2 mA, V
(RTN)
= 34 V,
V
(VDD)
= 38 V, V
(RTN)
falling
I
(PG)
= 2 mA, V
(RTN)
= 0 V, V
(VDD)
= 25 V
V
(PG)
= 57 V, V
(RTN)
= 0 V
0.12
0.4
V
Output low voltage
0.12
0.4
V
Leakage current
0.1
1
μA
UVLO
V
(UVLO_R)
V
(UVLO_F)
V
(VDD)
rising
V
(VDD)
falling
Hysteresis
38.4
39.3
40.4
TPS2375 Voltage at VDD
29.6
30.5
31.5
V
8.3
8.8
9.1
V
(VDD)
rising
V
(VDD)
falling
Hysteresis
34.1
35.1
36.0
TPS2377 Voltage at VDD
29.7
30.5
31.4
V
4.3
4.5
4.8
THERMAL SHUTDOWN
Shutdown temperature
Temperature rising
135
°
C
°
C
Hysteresis
20
BIAS CURRENT
Operating current
I
(VDD)
240
450
μA
(3)
Start with V
(RTN)
= 0 V, then increase V
(RTN)
until PG switches. Measure before thermal shutdown occurs.
4
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