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MAX5904, MAX5905, MAX5906, MAX5907, MAX5908, MAX5909
低电压、双路、热插拔控制器/供电排序器
概述
完整的数据资料
(PDF, 640kB)
英文
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MAX5904-MAX5909双热插拔控制器为双电源系统提供完备的保护。这些器件所允许的两路热插拔电源范围为+1V至+13.2V,其中一路电源等于或高于+2.7V,能够在带电背板上安全地插入或拨出板卡。
板卡的放电滤波电容为带电背板提供低阻,由此引起高浪涌电流从背板流至板卡,烧坏连接器和元件,或引起瞬间的背板电源崩溃、导致系统复位。当板卡插入时,通过逐渐升高输出电压、调节电流在预设的门限以内,MAX5904系列热插拔控制器可以避免上述问题,保证系统安全稳定。在启动周期完成后,两个片内比较器提供VariableSpeed/BiLevel™保护,防止短路和过流故障,并可抑制系统噪声和负载瞬变。发生故障时将切断负载。MAX5905/MAX5907/MAX5909在故障之后必须解锁,而MAX5904/MAX5906/MAX5908在故障之后能够自动重新启动。
MAX5904系列提供多种选择,减少了元件数量和设计时间。所有器件内置一个电荷泵,用于驱动廉价的、外部N沟道MOSFET的栅极。这些器件提供一些集成的特性,如启动电流调节和电流瞬变保护,无需外部定时电阻和电容。MAX5906-MAX5909提供漏极开路状态指示输出,可调的启动定时器,可调的限流值,一个独立的比较器和输出欠压/过压监视。
MAX5904/MAX5905提供8引脚SO封装,MAX5906-MAX5909提供节省空间的16引脚QSOP封装。
关键特性
应用/使用
+1V至+13.2V电源的安全热插拔,要求一路输入≥ 2.7V
25mV的低缺省限流门限
启动时浪涌电流调节
断路器功能
可调节断路器/限流门限
VariableSpeed/BiLevel断路器响应
自动重试或锁定故障管理模式
开/关电源次序设定
状态输出指示故障/安全情况
输出欠压和过压监测和/或保护
Key Specifications:
Hot Swap Controllers
Part Number
Min. VIN (V)
Max. VIN (V)
Low Voltage
High Voltage
Voltage Polarity
Type
Fault Condition Control
Number of Channels
Features
Package
Price**
MAX5904
1
13.2
Yes
No
Positive
Positive, Low-Voltage
Periodic retry
2
25mV Circuit Breaker Threshold
Regulated, VariableSpeed/BiLevel; inrush current and short circuit protection
SOIC/8
$2.81 @ 1k
MAX5905
Latched Off
25mV Circuit Breaker Threshold
Regulated, VariableSpeed/BiLevel; inrush current and short circuit protection
SOIC/8
$2.81 @ 1k
MAX5906
Periodic retry
Adjustable circuit breaker threshold: 25mV to 100mV
Output Undervoltage/Overvoltage Protection
Regulated, VariableSpeed/BiLevel; inrush current and short circuit protection
QSOP/16
$3.16 @ 1k
MAX5907
Latched Off
Adjustable circuit breaker threshold: 25mV to 100mV
Output Undervoltage/Overvoltage Protection
Regulated, VariableSpeed/BiLevel; inrush current and short circuit protection
QSOP/16
$3.16 @ 1k
MAX5908
Periodic retry
Adjustable circuit breaker threshold: 25mV to 100mV
Output Undervoltage/Overvoltage Protection
Regulated, VariableSpeed/BiLevel; inrush current and short circuit protection
QSOP/16
$3.16 @ 1k
MAX5909
Latched Off
Adjustable circuit breaker threshold: 25mV to 100mV
Output Undervoltage/Overvoltage Protection
Regulated, VariableSpeed/BiLevel; inrush current and short circuit protection
QSOP/16
$3.16 @ 1k
See All Hot Swap Controllers (45)
Notes:
** This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
图表
典型工作电路
参考文献: 19-2238;
Rev. 3;
2006-09-06
本页最后一次更新: 2007-07-27
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