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参数资料
| 型号： | MAX5929DEEG+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/23页 |
| 文件大小： | 340K |
| 描述： | IC HOT SWAP CTLR QUAD 24QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 1 V ~ 15 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 包装： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5929DEEG+ | 功能描述:热插拔功率分布 Quad Hot-Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5929DEEG+T | 功能描述:热插拔功率分布 Quad Hot-Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5929LHEEG | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5929LHEEG+ | 功能描述:热插拔功率分布 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5929LHEEG+T | 功能描述:热插拔功率分布 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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