參數(shù)資料
型號： MAX5929BEEG+
廠商： Maxim Integrated
文件頁數(shù)： 18/23頁
文件大?。?/td> 340K
描述： IC HOT SWAP CTLR QUAD 24QSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 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
Sense Resistor
The slow-comparator threshold voltage is adjustable
from 25mV to 100mV. Select a sense resistor that caus-
es a drop equal to the slow-comparator threshold volt-
age at a current level above the maximum normal
operating current. Typically, set the overload current at
1.2 to 1.5 times the full load current. The fast-compara-
tor threshold is two times the slow-comparator thresh-
old in normal operating mode. Choose the sense
resistor power rating to be greater than or equal to 2 x
(I
OVERLOAD
) x V
SC,TH
. Table 7 lists some recommend-
ed sense resistor manufacturers.
Slow-Comparator Threshold, R
LIM_
(MAX5927A)
The slow-comparator threshold voltage is adjustable
from 25mV to 100mV, allowing designers to fine-tune the
current-limit threshold for use with standard-value sense
resistors. Low slow-comparator thresholds allow for
increased efficiency by reducing the power dissipated
by the sense resistor. Furthermore, the low 25mV slow-
comparator threshold is beneficial when operating with
supply rails down to 1V because it allows a small per-
centage of the overall output voltage to be used for cur-
rent sensing. The VariableSpeed/BiLevel fault protection
feature offers inherent system immunity against load
transients and noise. This allows the slow-comparator
threshold to be set close to the maximum normal
operating level without experiencing nuisance faults. To
adjust the slow-comparator threshold, calculate R
LIM_
as follows:
where V
TH
is the desired slow-comparator threshold
voltage. Shorting LIM_ to GND sets V
TH
to 25mV. Do
not leave LIM_ unconnected.
Setting the Startup Period, R
TIM
The startup period (t
START
) is adjustable from 0.4ms to
50ms. The adjustable startup period feature allows sys-
tems to be customized for MOSFET gate capacitance
and board capacitance (C
BOARD
). The startup period
is adjusted with a resistor connected from TIM to GND
(R
TIM
). R
TIM
must be between 4k?and 500k? The
startup period has a default value of 9ms when TIM is
left unconnected. Calculate R
TIM
with the following
equation:
where t
START
is the desired startup period.
R
t
pF
TIM
START
=
?/DIV>
128    800
   
R
V
mV
A
LIM
TH
_
.
=
 25
7 5
Low-Voltage, Quad, Hot-Swap
Controllers/Power Sequencers
18   _______________________________________________________________________  ________________________________________________  __________________________________  ___________________
PART NUMBER
MANUFACTURER
DESCRIPTION
IRF7413
11m? 8-pin SO, 30V
IRF7401
22m? 8-pin SO, 20V
IRL3502S
International Rectifier
6m? D
2
PAK, 20V
MMSF3300
20m? 8-pin SO, 30V
MMSF5N02H
30m? 8-pin SO, 20V
MTB60N05H
On Semiconductor
14m? D
2
PAK, 50V
FDS6670A
10m? 8-pin SO, 30V
ND8426A
13.5m? 8-pin SO, 20V
FDB8030L
Fairchild Semiconductor
4.5m? D
2
PAK, 30V
Table 6. Recommended n-Channel MOSFETs
COMPONENT
MANUFACTURER
PHONE
WEBSITE
Vishay/Dale Resistors
402-564-3131
www.vishay.com
Sense Resistors
IRC, Inc.
361-992-7900
www.irctt.com
International Rectifier
310-322-3331
www.irf.com
Fairchild Semiconductor
888-522-5372
www.fairchildsemi.com
MOSFETs
On Semiconductor
602-244-6600
www.onsemi.com
Table 7. Component Manufacturers
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5929BEEG+ 功能描述:熱插拔功率分布 Quad 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
MAX5929BEEG+T 功能描述:熱插拔功率分布 Quad 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
MAX5929CEEG+ 功能描述:熱插拔功率分布 Quad 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
MAX5929CEEG+T 功能描述:熱插拔功率分布 Quad 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
MAX5929DEEG+ 功能描述:熱插拔功率分布 Quad 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
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