參數(shù)資料
型號(hào)： MAX5930AEEG+
廠商： Maxim Integrated
文件頁(yè)數(shù)： 9/23頁(yè)
文件大?。?/td> 331K
描述： IC HOT SWAP CTLR PWR SEQ 24QSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 50
類型： 熱交換控制器
應(yīng)用： 通用
內(nèi)部開關(guān)： 無
電源電壓： 1 V ~ 15 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 24-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 24-QSOP
包裝： 管件
Detailed Description
The MAX5930A/MAX5931A/MAX5931B are circuit-
breaker ICs for hot-swap applications where a line card
is inserted into a live backplane. The MAX5931A/
MAX5931B operate down to 1V provided one of the
inputs is above 2.7V. Normally, when a line card is
plugged into a live backplane, the cards discharged
filter capacitors provide low impedance that can
momentarily cause the main power supply to collapse.
The MAX5930A/MAX5931A/MAX5931B 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-channel MOSFETs,
external current-sense resistors, and on-chip compara-
tors. The startup period and current-limit threshold of
the MAX5930A/MAX5931A/MAX5931B can be adjusted
with external resistors. Figure 1 shows the MAX5930A/
MAX5931A/MAX5931B functional diagram.
The MAX5930A offers three programmable current lim-
its, selectable fault-management mode, and selectable
STAT_ output polarity. The MAX5930A features fixed
current limits, selectable fault-management mode, and
fixed STAT_ output polarity.
Mode
The MAX5930A/MAX5931A/MAX5931B support three
modes of operation: voltage-tracking, power-sequenc-
ing, and independent mode. Select the appropriate
mode according to Table 1.
Voltage-Tracking Mode
Connect MODE high to enter voltage-tracking mode.
While in voltage-tracking mode, all channels turn on
and off together. To turn all channels on:
"  At least one V
IN_
must exceed V
UVLO
(2.45V) for the
UVLO to startup delay (37.5ms).
"  All V
IN_
must exceed V
PWRRDY
(0.95V).
"  All V
ON_
must exceed V
ON,TH
(0.875V).
"  No faults may be present on any channel.
The MAX5930A/MAX5931A/MAX5931B turn off all
channels if any of the above conditions are not met.
After a fault-latched shutdown, cycle any of the ON_
pins to unlatch and restart all channels.
Power-Sequencing Mode
Leave MODE unconnected to enter power-sequencing
mode. While in power-sequencing mode, the
MAX5930A/MAX5931A/MAX5931B turn on and off each
channel depending on the state of the corresponding
V
ON_
. To turn on a given channel:
"  At least one V
IN_
must exceed V
UVLO
(2.45V) for the
UVLO to startup delay (37.5ms).
"  All V
IN_
must exceed V
PWRRDY
(0.95V).
"  The corresponding V
ON_
must exceed V
ON,TH
(0.875V).
"  No faults may be present on any channel.
The MAX5930A/MAX5931A/MAX5931B turn off all chan-
nels if any of the above conditions are not met. After a
fault-latched shutdown, cycle any of the ON_ inputs to
unlatch and restart all channels, dependent on the corre-
sponding V
ON_
state.
Independent Mode
Connect MODE to GND to enter independent mode.
While in independent mode the MAX5930A/
MAX5931A/MAX5931B provide complete independent
control for each channel. To turn on a given channel:
"  At least one V
IN_
must exceed V
UVLO
(2.45V) for the
UVLO to startup delay (37.5ms).
"  The corresponding V
IN_
must exceed V
PWRRDY
(0.95V).
"  The corresponding V
ON_
must exceed V
ON,TH
(0.875V).
Low-Voltage, Triple, Hot-Swap Controllers/
Power Sequencers/Voltage Trackers
_______________________________________________________________________________________   9
MODE
OPERATION
High (Connect to BIAS)
Voltage Tracking
Unconnected
Voltage Sequencing
GND
Independent
Table 1. Operational Mode Selection
PIN
MAX5930A
MAX5931A/
MAX5931B
NAME
FUNCTION
23
19
ON3
On/Off Channel 3 Control Input. See the Mode section.
24
20
MODE
Mode Configuration Input. Mode is configured according to Table 1 as soon as one of the
IN_ voltages exceeds UVLO and before turning on OUT_ (see the Mode section).
Pin Description (continued)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5930AEEG+ 功能描述:熱插拔功率分布 Triple 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
MAX5930AEEG+T 功能描述:熱插拔功率分布 Triple 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
MAX5930EEG 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
MAX5930EEG+ 功能描述:熱插拔功率分布 Integrated Circuits (ICs) 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
MAX5930EEG+T 功能描述:熱插拔功率分布 Integrated Circuits (ICs) 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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