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參數資料
| 型號： | MAX5972AETE+T |
| 廠商： | Maxim Integrated |
| 文件頁數： | 3/13頁 |
| 文件大小： | 1120K |
| 描述： | IC CONTROLLER INTERFACE 16TQFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | 以太網供電開關（PoE） |
| 應用： | IP 電話，LAN 網絡供電，網絡路由器和交換機 |
| 內部開關： | 是 |
| 電流限制： | 可調 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-WQFN 裸露焊盤 |
| 供應商設備封裝： | 16-TQFN-EP（5x5） |
| 包裝： | 帶卷 (TR) |
IEEE 802.3af/at-Compliant, Powered Device Interface
Controller with Integrated Power MOSFET
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= (V
DD
- V
SS
) = 48V, R
DET
= 24.9k? R
CLS
= 615? RTN, WAD, PG, and 2EC unconnected, all voltages are referenced to V
SS,
unless otherwise noted. T
A
= T
J
= -40NC to +85NC, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 3)
Note 3: This device is 100% production tested at T
A
= +25NC. Limits over temperature are guaranteed by design.
Note 4: The input offset current is illustrated in Figure 1.
Note 5: Effective differential input resistance is defined as the differential resistance between V
DD
and V
SS
. See Figure 1.
Note 6: Classification current is turned off whenever the device is in power mode.
Note 7: UVLO hysteresis is guaranteed by design, not production tested.
Note 8: A 20V glitch on input voltage that takes V
DD
below V
ON
shorter than or equal to t
OFF_DLY
does not cause the MAX5972A
to exit power-on mode.
Note 9: In power mode, current-limit foldback is used to reduce the power dissipation in the isolation MOSFET during an overload
condition across V
DD
and RTN.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
Turn-On Voltage
V
ON
V
IN
rising
34.3
35.4
36.6
V
V
IN
Turn-Off Voltage
V
OFF
V
IN
falling
30
V
V
IN
Turn-On/-Off Hysteresis
V
HYST_UVLO
(Note 7)
4.2
V
V
IN
Deglitch Time
t
OFF_DLY
V
IN
falling from 40V to 20V (Note 8)
30
120
Fs
Inrush to Operating Mode
Delay
t
DELAY
t
DELAY
= minimum PG current pulse width
after entering into power mode
80
96
112
ms
Isolation Power MOSFET
On-Resistance
R
ON_ISO
I
RTN
= 600mA
T
J
= +25NC
0.7
1.1
I
T
J
= +85NC
0.9
1.5
T
J
= +125NC
1.15
RTN Leakage Current
I
RTN_LKG
V
RTN
= 12.5V to 30V
10
FA
CURRENT LIMIT
Inrush Current Limit
I
INRUSH
During initial turn-on period,
V
RTN
= 1.5V
90
135
180
mA
Current Limit During Normal
Operation
I
LIM
After inrush completed,
V
RTN
= 1V
720
800
880
mA
Foldback Threshold
V
RTN
(Note 9)
13
16.5
V
LOGIC
WAD Detection Threshold
V
WAD-REF
V
WAD
rising, V
IN
= 14V to 48V (referenced
to RTN)
8
9
10
V
WAD Detection Threshold
Hysteresis
V
WAD
falling, V
RTN
= 0V, V
SS
unconnected
0.725
WAD Input Current
I
WAD-LKG
V
WAD
= 10V (referenced to RTN)
3.5
FA
2EC Sink Current
V
2EC
= 3.5V (referenced to RTN), V
SS
unconnected
1
1.5
2.25
mA
2EC Off-Leakage Current
V
2EC
= 48V
1
FA
PG Sink Current
V
RTN
= 1.5V, V
PG
= 0.8V, during inrush
period
125
230
375
FA
PG Off-Leakage Current
V
PG
= 60V
1
FA
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
T
SD
T
J
rising
+140
NC
Thermal-Shutdown Hysteresis
T
J
falling
+28
NC
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX5972AEVKIT | 制造商:Maxim Integrated Products 功能描述:IEEE 802.3AF/AT-COMPLIANT POWERED DEVICE INTERFACE CONTROLLE - Boxed Product (Development Kits) |
| MAX5972BETE+ | 功能描述:熱插拔功率分布 IEEE 802.3af/at PDIC Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5972BETE+T | 功能描述:熱插拔功率分布 IEEE 802.3af/at PDIC Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5973BETL+ | 功能描述:監控電路 Phase Redundancy Power Supervisor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX5973BETL+T | 功能描述:監控電路 Phase Redundancy Power Supervisor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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