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参数资料
| 型号： | MAX5079EUD+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL ORING MOSFET 14TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 96 |
| 应用： | 基站网络线路卡，服务器 |
| FET 型： | N 沟道 |
| 输出数： | 1 |
| 内部开关： | 无 |
| 延迟时间 - 开启： | 10µs |
| 延迟时间 - 关闭： | 70ns |
| 电源电压： | 2.75 V ~ 13.2 V |
| 电流 - 电源： | 4mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 管件 |
19-3584; Rev 1; 3/09
ORing MOSFET Controller with
Ultra-Fast 200ns Turn-Off
General Description
The MAX5079 ORing MOSFET controller replaces
ORing diodes in high-reliability redundant, parallel-con-
nected power supplies. Despite their low forward-volt-
age drop, ORing Schottky diodes cause excessive
power dissipation at high currents. The MAX5079
allows for the use of low-on-resistance n-channel power
MOSFETs to replace the Schottky diodes. This results
in low power dissipation, smaller size, and elimination
of heatsinks in high-power applications.
The MAX5079 operates from 2.75V to 13.2V and includes
a charge pump to drive the high-side n-channel MOSFET.
Operation down to 1V is possible if an auxiliary voltage of
at least 2.75V is available. When the controller detects a
positive voltage difference between IN and BUS, the
n-channel MOSFET is turned on. The MOSFET is turned
off as soon as the MAX5079 sees a negative potential at
IN with respect to the BUS voltage, and is automatically
turned back on when the positive potential is restored.
Under fault conditions, the ORing MOSFET’s gate is
Features
o 2.75V to 13.2V Input ORing Voltage
o 1V to 13.2V Input ORing Voltage with 2.75V Aux
Voltage Present
o 2A MOSFET Gate Pulldown Current During Fault
Condition
o Ultra-Fast 200ns, MOSFET Turn-Off During Fault
Condition
o Supply Undervoltage and Bus Overvoltage
Detection
o Power-Good (PGOOD) and Overvoltage (OVP)
Outputs for Fault Detection
o Space-Saving 14-Pin TSSOP Package
o -40°C to +85°C Operating Temperature Range
Ordering Information
pulled down with a 1A current, providing an ultra-fast
200ns turn-off. The reverse voltage turn-off threshold is
externally adjustable to avoid unintentional turn-off of the
PART
MAX5079EUD
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
14 TSSOP
ORing MOSFET due to glitches at IN or BUS caused by
hot plugging the power supply.
Typical Operating Circuit
Additional features include an OVP flag to facilitate
shutdown of a failed power supply due to an overvolt-
age condition, and a PGOOD signal that indicates if V IN
is either below the undervoltage lockout or V BUS is in
an overvoltage condition. The MAX5079 operates over
the -40°C to +85°C temperature range and is available
V OUT1
POWER SUPPLY 1
(PS1)
1V TO 13.2V
>2.75V
V IN
IN
AUXIN
SUB 75N 03-04
N1
GATE
BUS
U1
PGOOD
V BUS
BUS
COMMON
in a space-saving 14-pin TSSOP package.
UVLO
MAX5079
OVI
Applications
R STH
C STH
STH
C+
C-
FTH
OVP
GND
Paralleled DC-DC Converter Modules
N+1 Redundant Power Systems
Servers
C EXT
R FTH
Base-Station Line Cards
RAID
Networking Line Cards
V OUT2
POWER SUPPLY 2
(PS2)
1V TO 13.2V
V IN
IN
SUB 75N 03-04
N2
GATE
BUS
V BUS
C BUS
>2.75V
AUXIN
UVLO
STH
U2
MAX5079
PGOOD
OVI
OVP
R STH
C STH
C+
C-
FTH
GND
Pin Configuration appears at end of data sheet.
C EXT
R FTH
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
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|---|---|
| MAX5079EUD+ | 功能描述:功率驱动器IC ORing MOSFET Controller RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5079EUD+T | 功能描述:功率驱动器IC ORing MOSFET Controller RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5079EUD+TG48 | 制造商:Maxim Integrated Products 功能描述:ORING MOSFET CONTROLLER WITH ULTRA-FAST 200NS TURN-OFF - Tape and Reel |
| MAX5079EUD-T | 功能描述:功率驱动器IC RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5079EVKIT | 功能描述:电源管理IC开发工具 MAX5079 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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