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參數(shù)資料
| 型號(hào)： | MAX5955BEEE+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 10/15頁 |
| 文件大?。?/td> | 354K |
| 描述： | IC DUAL HOT-SWAP CTRLR 16-QSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 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 ~ 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(yīng)商設(shè)備封裝： | 16-QSOP |
| 包裝： | 管件 |
Applications Information
Component Selection
n-Channel MOSFET
Select the external MOSFETs according to the applica-
tions current levels. Table 2 lists some recommended
components. The MOSFETs on-resistance (R
DS(ON)
)
should be chosen low enough to have a minimum volt-
age drop at full load to limit the MOSFET power dissi-
pation. High R
DS(ON)
causes output ripple if there is a
pulsating load. Determine the device power rating to
accommodate a short-circuit condition on the board at
startup and when the device is in automatic-retry mode
(see the MOSFET Thermal Considerations section).
Using the MAX5955B/MAX5956B in latched mode allows
the use of MOSFETs with lower power ratings. A MOSFET
typically withstands single-shot pulses with higher dissi-
pation than the specified package rating. Table 3 lists
some recommended manufacturers and components.
Sense Resistor
The slow-comparator threshold voltage is adjustable
from 25mV to 100mV. Select a sense resistor that causes
a drop equal to the slow-comparator threshold voltage 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-comparator threshold
is four times the slow-comparator threshold in normal
operating mode. Choose the sense-resistor power rating
to be greater than (I
OVERLOAD
)
2
x V
SC,TH
.
Slow-Comparator Threshold, R
LIM
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 dissi-
pated 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
percentage of the overall output voltage to be used for
current sensing. The VariableSpeed/BiLevel fault pro-
tection feature offers inherent system immunity against
load transients and noise. This allows the slow-com-
parator threshold to be set close to the maximum nor-
mal operating level without experiencing nuisance
faults. To adjust the slow-comparator threshold, calcu-
late R
LIM
as follows:
where V
TH
is the desired slow-comparator threshold
voltage.
R
V
mV
A
LIM
TH
=
25
0 25
. ?/DIV>
Low-Voltage, Dual Hot-Swap Controllers with
Independent On/Off Control
10 ______________________________________________________________________________________
PART
OVERCURRENT
FAULT (V
OUT1
)
OVERCURRENT
FAULT (V
OUT2
)
OVER/UNDER-
VOLTAGE FAULT
(V
OUT1
)
OVER/UNDER-
VOLTAGE FAULT
(V
OUT2
)
PGOOD1/
PGOOD2
GATE1/
GATE2
Yes
X
X
X
Low/Low
Off/Off
X
Yes
X
X
Low/Low
Off/Off
X
X
Yes
X
Low/Low
Off/Off
MAX5955
UV/OV
Protection
X
X
X
Yes
Low/Low
Off/Off
Yes
X
X
X
Low/Low
Off/Off
X
Yes
X
X
Low/Low
Off/Off
X
X
Yes
No
Low/High
On/On
MAX5956
UV/OV
Monitor
X
X
No
Yes
High/Low
On/On
Table 1. Status Output Truth Table
PART NUMBER MANUFACTURER
DESCRIPTION
IRF7413
11m&, 8 SO, 30V
IRF7401
22m&, 8 SO, 20V
IRL3502S
International
Rectifier
6m&, D2PAK, 20V
MMSF3300
20m&, 8 SO, 30V
MMSF5N02H
30m&, 8 SO, 20V
MTB60N05H
Motorola
14m&, D
2
PAK, 50V
FDS6670A
10m&, 8 SO, 30V
NDS8426A
13.5m&, 8 SO, 20V
FDB8030L
Fairchild
4.5m&, D
2
PAK, 30V
Table 2. Recommended n-Channel
MOSFETs
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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(fēng)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(fēng)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(fēng)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(fēng)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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