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參數(shù)資料
| 型號(hào)： | MAX5913AEMH+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 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(biāo)準(zhǔn)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(jī) |
| 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
14 ______________________________________________________________________________________
Internally the circuit compares the output voltage with
V
CC
to determine when the FET is completely on. A
POK condition is met when:
(V
CC
- V
OUT
) d 1.5V
The internal circuit monitors V
OUT
to determine the
value of the foldback current when the circuit goes into
current-limit conditions. The value of the current limit
decreases as the output voltage decreases in order to
limit the power dissipation of the FET. The nonlinear
relationship between V
OUT
and I
LIM
is depicted in
Figure 8.
The foldback circuit is active whenever the MAX5913A/
MAX5914A are in current-limit mode after an overcur-
rent condition has been detected.
Connect a catch diode to analog ground and a 100&
resistor in series with OUT_ to limit the current during
negative inductive kicks that can bring OUT_ below the
ground potential (Figure 5).
Relay Drivers
The MAX5913A/MAX5914A include on-chip relay drivers,
RYLD_, capable of sinking 100mA. When RLYON_ goes
high, the MAX5913A/MAX5914A immediately enable the
relay driver, and the corresponding ON_ switch control
input is delayed 25.6ms to allow the relay to close under
a zero-voltage condition. When RLYON_ goes low, the
MAX5913A/MAX5914A immediately turn off the corre-
sponding switch, and then turn off the relay driver after a
3.2ms delay, ensuring the relay contacts open under a
zero-current condition. The polarity of the MAX5913A
FOLDBACK
NL CONTROL
FROM LOGIC
CONTROLLER
DRAIN
R
SENSE
GATE
TO LOGIC
CONTROLLER
CSP
10礎(chǔ)
8礎(chǔ)
1mA
OUT
OCEN
ON
AGND
DGND
RLYON
RLYD
V
RLY
V
CC
CHARGE PUMP
POK COMPARATOR
DELAY
DUAL LEVEL
DETECTION
1mA
V
DD
1.236V
UVLO
RTIM
DC
RTRYEN
OPEN-CIRCUIT
DETECTOR
DC COUNTER
RESET LOGIC
RELAY
CONTROL
TIMING
OSCILLATOR
LOGIC
CONTROLLER
CSP -1.5V
3mV
142.5mV
420mV
V
DD
DGND
MAX5913A
MAX5914A
Figure 6. Functional Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX5916EUI+ | IC HOT-SWAP CTRLR DUAL 28-TSSOP |
| MAX5917BESE+ | IC HOT-SWAP SWITCH 65V 16-SOIC |
| MAX5920BESA+ | IC HOT-SWAP CTRLR -48V 8-SOIC |
| MAX5922AEUI+ | IC NETWORK PWR SW +48V 28-TSSOP |
| MAX5923EUP+T | IC HOT-SWAP SWITCH +60V 20-TSSOP |
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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