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参数资料
| 型号： | MAX5917BESE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/11页 |
| 文件大小： | 273K |
| 描述： | IC HOT-SWAP SWITCH 65V 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 系列： | Simple Swapper™ |
| 类型： | 热交换开关 |
| 应用： | IP 电话，LAN 网络供电，网络路由器和交换机 |
| 内部开关： | 是 |
| 电流限制： | 420mA |
| 电源电压： | 10 V ~ 65 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
+65V Simple Swapper Hot-Swap Switches
8 _______________________________________________________________________________________
Detailed Description
The MAX5910/MAX5917 are fully integrated hot-swap
switches for positive power-supply rails. The devices
allow safe insertion and removal of circuit cards into
live backplanes or ports without causing glitches on the
backplane power-supply rail. During startup these
devices act as current regulators using their on-board
FET to limit the amount of current drawn by the load to
280mA for MAX5910, 567mA for MAX5917A, and
420mA for MAX5917B. If the required load current
exceeds that current limit, the internal switch behaves
like a constant current source.
The MAX5910/MAX5917 monitor the input voltage, the
output voltage, the output current, and the die tempera-
ture. They assert IFAULT and PGOOD accordingly if
they detect an error condition.
A zero-current load detection feature activates if the
load current drops below IF
TH
for over 12ms. The
MAX5910/MAX5917 also include an ENABLE input
allowing the host system to turn the FET on or off.
Normal Operation
Startup
When power is first applied with ENABLE high, or when
ENABLE is asserted, the MAX5910/MAX5917A/
MAX5917B limit the current to the load to 280mA/
567mA/420mA. PGOOD is asserted high 12ms after the
output voltage exceeds the power-good threshold.
PGOOD is pulled low if V
OUT
is less than 70% V
IN
.
Zero-Current Load Fault
A zero-current load detection feature activates if the
load current drops below IF
TH
for more than 12ms. The
MAX5910/MAX5917 flag the zero-current condition but
do not disconnect the load. IFAULT is deasserted
whenever the load current exceeds the IF
TH
+ IF
HYS
zero-current detection threshold.
Undervoltage Lockout Fault
If V
IN
d UVLO, where UVLO is the desired voltage at
which the UVLO fault occurs, the internal FET is turned
off and IFAULT and PGOOD are pulled low. The default
UVLO voltage is 26.5V, but it can be adjusted using an
external resistive-divider (see the Changing the
Undervoltage Lockout Setting section).
Pin Description
PIN
MAX5910
MAX5917A/B
NAME
FUNCTION
1
2
UVLO
Undervoltage Lockout Input. Leave UVLO open circuit for the default
setting of 26.5V. Alternatively, UVLO can be connected to a resistive-
divider to set a desired lockout voltage. See the Changing the
Undervoltage Lockout Setting section.
2
3
V
IN
Voltage Input Terminal. Bypass V
IN
to GND with a 0.1礔 capacitor to
improve noise immunity.
3
1, 6, 8, 9, 15, 16
N.C.
No Connection. Not internally connected.
4
7
ENABLE
3.3V Logic Input (TTL compatible), Active-High. Turns the internal FET
on or off. Drive ENABLE high to enable V
OUT
. Drive ENABLE low to
disable V
OUT
.
5
10
PGOOD
Open-Drain Logic Output, Active-High. PGOOD signals that the output
is within specification. When the output is less than 70% of the input, the
PGOOD signal is pulled low. Connect a 10k& pullup resistor (R) to 3.3V.
6
11
IFAULT
Open-Drain Logic Output, Active-Low. IFAULT is asserted when the
output current falls below the IF
TH
nominal threshold or when the switch
is off. Connect a 10k& pullup resistor (R) to 3.3V.
7
4, 5, 12, 13
GND
Ground
8
14
V
OUT
Voltage Output Terminal
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5917BESE+ | 功能描述:热插拔功率分布 65V 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 |
| MAX5917BESE+T | 功能描述:热插拔功率分布 65V 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 |
| MAX5917BESE-T | 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 |
| MAX5918AEEE | 制造商:Maxim Integrated Products 功能描述:LOW-VOLTAGE, DUAL HOT-SWAP CONTROLLERS WITH I - Rail/Tube |
| MAX5918AEEE+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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