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參數(shù)資料
型號: MAX5955BEEE+
廠商: Maxim Integrated
文件頁數(shù): 6/15頁
文件大小: 354K
描述: IC DUAL HOT-SWAP CTRLR 16-QSOP
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 100
類型: 熱交換控制器
應用: 通用
內(nèi)部開關(guān):
電源電壓: 1 V ~ 13.2 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應商設(shè)備封裝: 16-QSOP
包裝: 管件
Detailed Description
The MAX5955 and MAX5956 are circuit breaker ICs for
hot-swap applications where a line card is inserted into
a live backplane. The MAX5955 and MAX5956 operate
down to 1V provided one of the inputs is above 2.7V.
Normally, when a line card is plugged into a live back-
plane, the cards discharged filter capacitors provide
low impedance that can momentarily cause the main
power supply to collapse. The MAX5955 and MAX5956
reside either on the backplane or on the removable
card to provide inrush current limiting and short-circuit
protection. This is achieved by using external n-chan-
nel MOSFETs, external current-sense resistors, and two
on-chip comparators. The startup period and current-
limit threshold of the MAX5955/MAX5956 can be
adjusted with external resistors. Figure 1 shows the
MAX5955/MAX5956 functional diagram.
The MAX5955/MAX5956 pull both PGOODs low and
both external FETs off for an overcurrent condition. The
MAX5955 also pulls both PGOODs low and both external
FETs off (protection) for an undervoltage/overvoltage
fault, whereas, the MAX5956 ONLY pulls the corre-
sponding fault channels PGOOD_ low (monitoring).
When the overvoltage/undervoltage fault disappears on
the MAX5956, the corresponding PGOOD_ automatically
goes high impedance.
Low-Voltage, Dual Hot-Swap Controllers with
Independent On/Off Control
6  _______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1
PGOOD1
Channel 1 Status Output (Open Drain, see the Absolute Maximum Ratings). PGOOD1 asserts high when hot
swap is successful and channel 1 is within regulation. PGOOD1 asserts low during startup, when ON1 is
low, when channel 1 is off, or when channel 1 has any fault condition.
2
TIM
Startup Timer Setting. Connect a resistor from TIM to GND to set the startup period. Leave TIM unconnected
for the default startup period of 9ms.
3
IN1
Channel 1 Supply Input. Connect to a supply voltage of 1V to 13.2V.
4
SENSE1
Channel 1 Current-Sense Input. Connect R
SENSE1
 from IN1 to SENSE1. Connect to IN1 to disable circuit
breaker function of channel 1.
5
GATE1    Channel 1 Gate-Drive Output. Connect to the gate of an external n-channel MOSFET.
6
GND
Ground
7
LIM1
Channel 1 Current-Limit Setting. Connect a resistor from LIM1 to GND to set the current trip level. Connect to
GND for the default 25mV threshold (see the Slow-Comparator Threshold, R
LIM
 section).
8
MON1
Channel 1 Output-Voltage Monitor. Window comparator input. Connect through a resistive divider from
OUT1 to GND to set the channel 1 overvoltage and undervoltage threshold. Connect to IN1 to disable.
9
MON2
Channel 2 Output-Voltage Monitor. Window comparator input. Connect through a resistive divider from
OUT2 to GND to set the channel 2 overvoltage and undervoltage threshold. Connect to IN2 to disable.
10
LIM2
Channel 2 Current-Limit Setting. Connect a resistor from LIM2 to GND to set the current trip level. Connect to
GND for the default 25mV threshold (see the Slow-Comparator Threshold, R
LIM
 section).
11
ON1
Channel 1 On/Off Control Input. Channel 1 is turned on when V
ON1
 > 0.875V.
12
GATE2    Channel 2 Gate-Drive Output. Connect to the gate of an external n-channel MOSFET.
13
SENSE2
Channel 2 Current-Sense Input. Connect R
SENSE2
 from IN2 to SENSE2. Connect to IN2 to disable circuit-
breaker function of channel 2.
14
IN2
Channel 2 Supply Input. Connect to a supply voltage of 1V to 13.2V.
15
ON2
Channel 2 On/Off Control Input. Channel 2 is turned on when V
ON2
 > 0.875V.
16
PGOOD2
Channel 2 Status Output (Open Drain, see the Absolute Maximum Ratings). PGOOD2 asserts high when hot
swap is successful and channel 2 is within regulation. PGOOD2 asserts low during startup, when V
ON2
 is
low, when channel 2 is off, or when channel 2 has any fault condition.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5955BEEE+ 功能描述:熱插拔功率分布 Dual 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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5955BEEE+T 功能描述:熱插拔功率分布 Dual 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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5955BEEE-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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5955BUEE 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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5955BUEE+ 功能描述:熱插拔功率分布 Dual 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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
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