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参数资料
| 型号： | MAX5929DEEG+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/23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 |
t
D,UVLO
ensures that the board is fully inserted into the
backplane and that the input voltages are
stable. MAX5927A/MAX5929AMAX5929D include a
UVLO glitch filter, t
D,GF
, to reject all input voltage noise
and transients. Bringing all input supplies below the
UVLO threshold for longer than t
D,GF
reinitiates t
D,UVLO
and the startup period, t
START
. See Figure 8 for an
example of automatic turn-on function.
Latched and Autoretry Fault Management
The MAX5929A/MAX5929B always latch the external
MOSFETs off when an overcurrent fault is detected,
and the MAX5929C/MAX5929D are always in autoretry
mode. The MAX5927A can be configured to either latch
the external MOSFETs off or to autoretry (see Table 2).
Toggling ON_ below 0.875V for at least 100祍 clears
the MAX5929A/MAX5929B or MAX5927A (LATCH =
unconnected) fault and reinitiates the startup period.
Similarly, the MAX5929C/MAX5929D or MAX5927A
(LATCH = GND) turn the external MOSFETs off when
an overcurrent fault is detected, then automatically
restart after the autoretry delay that is internally set to
64 times t
START
.
Status Outputs (STAT_)
The status (STAT_) outputs are open-drain outputs that
assert when hot swap is successful and t
START
has
elapsed. STAT_ deasserts if ON_ is low or if the chan-
nel is turned off for any fault condition.
The polarity of the STAT_ outputs is selected using POL
for the MAX5927A (see Table 3). Tables 4 and 5 con-
tain the MAX5927A/MAX5929AMAX5929D truth tables.
Applications Information
Component Selection
n-Channel MOSFETs
Select the external MOSFETs according to the applica-
tions current levels. Table 6 lists recommended com-
ponents. 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 autoretry mode (see
the MOSFET Thermal Considerations section).
Using these devices in latched mode allows the use of
MOSFETs with lower power ratings. A MOSFET typical-
ly withstands single-shot pulses with higher dissipation
than the specified package rating. Table 7 lists some
recommended MOSFET manufacturers.
Low-Voltage, Quad, Hot-Swap
Controllers/Power Sequencers
16 _______________________________________________________________________ ________________________________________________ __________________________________ ___________________
LATCH
FAULT MANAGEMENT
Unconnected
Fault condition latches MOSFETs off
Low
Autoretry mode
Table 2. Selecting Fault Management
Mode (MAX5927A)
POL
STAT_
Low
Asserts low
Unconnected
Asserts high (open drain)
Table 3. Selecting STAT_ Polarity
(MAX5927A)
Figure 8. Automatic Turn-On when Input Voltages are Above
their Respective Undervoltage Lockout Threshold (Provided
t
D
,
UVLO
Requirement is Met)
MAX5927A
MAX5929A
MAX5929B
MAX5929C
MAX5929D
V
1
ON1
ON2
ON3
ON4
GND
GND
ON1
ON2
ON3
ON4
REMOVABLE CARD
BACKPLANE
V
2
V
3
V
4
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相关代理商/技术参数 |
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|---|---|
| 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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