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參數(shù)資料
| 型號： | MAX5929BEEG+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 9/23頁 |
| 文件大?。?/td> | 340K |
| 描述： | IC HOT SWAP CTLR QUAD 24QSOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 類型： | 熱交換控制器 |
| 應用： | 通用 |
| 內部開關： | 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） |
| 供應商設備封裝： | 24-QSOP |
| 包裝： | 管件 |
Detailed Description
The MAX5927A/MAX5929AMAX5929D are circuit-
breaker ICs for hot-swap applications where a line card
is inserted into a live backplane. The MAX5927A/
MAX5929AMAX5929D operate down to 1V provided
one of the inputs is at or e 2.7V. Normally, when a line
card is plugged into a live backplane, the cards dis-
charged filter capacitors provide low impedance that
can momentarily cause the main power supply to col-
lapse. MAX5927A/MAX5929AMAX5929D 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, exter-
nal current-sense resistors, and on-chip comparators.
The startup period and current-limit threshold of the
MAX5927A/MAX5929AMAX5929D can be adjusted
with external resistors. Figure 1 shows the MAX5927A/
MAX5929AMAX5929D functional diagram.
The MAX5927A offers four programmable current limits,
selectable fault management mode, and selectable
STAT_ output polarity. The MAX5929AMAX5929D fea-
ture fixed current limits, and a variety of fault manage-
ment and STAT_ polarity option combinations.
Mode
The MAX5927A/MAX5929AMAX5929D support three
modes of operation: voltage tracking, power sequenc-
ing, and independent. 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.
Low-Voltage, Quad, Hot-Swap
Controllers/Power Sequencers
______________________________________________________________________________________________________________________________________________________________________________ 9
MODE
OPERATION
High (connect to BIAS)
Voltage tracking
Unconnected
Power sequencing
GND
Independent
Table 1. Operational Mode Selection
PIN
MAX5927A
MAX5929A
MAX5929D
NAME
FUNCTION
22
20
GATE2
Channel 2 Gate-Drive Output. Connect to gate of external n-channel MOSFET.
23
21
SENSE2
Channel 2 Current-Sense Input. Connect SENSE2 to the drain of an external MOSFET
and to one end of R
SENSE2
.
24
22
IN2
Channel 2 Supply Input. Connect to a supply voltage from 1V to 15V and to one end of
R
SENSE2
.
25
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. Do not leave unconnected.
26
23
ON4
On/Off Channel 4 Control Input. See the Mode section.
27
24
ON3
On/Off Channel 3 Control Input. See the Mode section.
28
1
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.
29
POL
STAT Output Polarity Select. See Table 3 and the Status Output section.
30
2
ON2
On/Off Channel 2 Control Input. See the Mode section.
31
3
ON1
On/Off Channel 1 Control Input. See the Mode section.
32
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. Do not leave unconnected.
EP
EP
Exposed Pad. EP is internally connected to GND. Leave EP unconnected or connect to
GND.
Pin Description (continued)
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相關代理商/技術參數(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 |
| 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 |
| MAX5929CEEG+ | 功能描述:熱插拔功率分布 Quad Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產品: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 |
| 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 |
| MAX5929DEEG+ | 功能描述:熱插拔功率分布 Quad Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產品: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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