參數(shù)資料
型號： MAX5913AEMH+
廠商： Maxim Integrated
文件頁數(shù)： 12/20頁
文件大小： 614K
描述： IC HOT SWAP CTLR QUAD 48V 44MQFP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 96
類型： 熱交換控制器
應(yīng)用： IP 電話，LAN 網(wǎng)絡(luò)供電，網(wǎng)絡(luò)路由器和交換機
內(nèi)部開關(guān)： 無
電源電壓： 35 V ~ 72 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 44-QFP
供應(yīng)商設(shè)備封裝： 44-MQFP（10x10）
包裝： 托盤
+48V Quad Hot-Swap Controllers For
Power-Over-LAN
12   ______________________________________________________________________________________
The first comparator compares the sensed voltage
against the V
SC
threshold (typically 142.5mV). Choose
a sense resistor as follows:
R
SENSE
= V
SC
/ I
MAX
where I
MAX
is the maximum current allowed through
the switch.
When I
MAX
is reached, foldback current-limit circuitry
regulates the current limit as a function of V
OUT
(Figure
8). As V
OUT
approaches zero, the maximum voltage drop
across the sense resistor is lowered to a minimum value
of 48mV (typ). This foldback feature helps reduce the
power dissipation in the external power FET during output
overload and output short-circuit conditions. If a load with
very low activation voltage is permanently connected to
the output, make the minimum limit current sufficiently
larger than the load current. If the load current indeed
exceeds the foldback-limit value, the MAX5913A/
MAX5914A are not able to power up the switch.
Test Circuits and Timing Diagrams
V
UVLO
V
CC
V
GATE
t
D, UVLO
+1V
V
IH
V
IL
+1V
RLYON
RLYD
(MAX5913A)
t
ON_DEL
t
OFF_DEL
V
RLY
V
GATE
+42V
3.3V
DGND
RLYON1
ON1
ON2
RLYON2
CSP2
CSP1
DRAIN2
OUT2
270礔
270礔
270礔
470礔
270礔
0.33&
200&
100&
100&
0.33&
GATE2
DRAIN1
OUT1
GATE1
V
OUT
V
CC
V
TEST
MAX5913A/MAX5914A
(V
CC
- V
OUT
) d 1.5V
(POWER-OK IS GOOD)
V
CC
t
OC
V
GATE
t
LPFD
+1V
OC DETECTOR ENABLED
(INTERNAL SIGNAL)
Figure 1. UVLO Deglitch Delay
Figure 3. Port Turn-On Delay, Relay Turn-Off Delay
Figure 4. Channel-to-Channel Crosstalk Test Circuit
Figure 2. Open-Circuit Detector Deglitch Delay
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5913AEMH+ 功能描述:熱插拔功率分布 48V Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5913AEMH+D 制造商:Maxim Integrated Products 功能描述:HOT SWAP CNTRLR 44MQFP - Rail/Tube
MAX5913AEMH+T 功能描述:熱插拔功率分布 48V Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5913AEMH+TD 制造商:Maxim Integrated Products 功能描述:HOT SWAP CNTRLR 44MQFP - Tape and Reel
MAX5913AEMH-T 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
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