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参数资料
| 型号： | MAX5079EUD+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 14/18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 |
ORing MOSFET Controller with
Ultra-Fast 200ns Turn-Off
latches low and the internal GATE pulldown circuitry is
activated and pulls GATE low only when both of the
conditions are satisfied:
1) V OVI ≥ 0.6V.
2) V IN ≥ V BUS .
OVP can sink 10mA maximum. Cycle power or pull
UVLO low and then high again to reset the OVP latch.
GATE is pulled to PGND and remains low as long as
V OVI ≥ 0.6V. When V OVI drops below 0.6V, OVP remains
low. However, the MAX5079 tries to turn on the ORing
MOSFET unless V IN is actively kept below the undervolt-
age lockout. Use OVP to drive the cathode of an opto-
coupler to shut down the respective power supply from
the primary side (see the Typical Application Circuit of
Figure 2) or fire an SCR connected from IN to PGND.
Power-Good Comparator (PGOOD)
PGOOD output pulls low when V UVLO falls below 0.6V
or V OVI goes above 0.6V. PGOOD can sink a maximum
of 2mA.
Layout Guidelines
1) Place a 1μF ceramic input bypass capacitor physi-
cally close to IN and PGND. Connect IN as close as
possible to the source of the ORing MOSFET.
2) Sense the V BUS close to the bulk capacitor, away from
the drain of the ORing MOSFET. When IN is shorted to
ground during a fault, BUS is also pulled low through
the ORing MOSFET. In the absence of V AUXIN , the
MAX5079 loses both power inputs V IN and V BUS . This
can cause a delayed pulldown of the gate. Sensing
the BUS away from the ORing MOSFET drain, close to
the BUS bulk capacitor provides power to the
MAX5079 for a few microseconds, long enough to pull
down the ORing MOSFET gate and isolate BUS from a
shorted IN.
3) Place the charge-pump capacitor (C EXT ) and the
slow-comparator blanking time adjustment capacitor
(C STH ) as close as possible to the MAX5079.
4) Run a thick trace from the gate of the ORing MOSFET
to GATE.
14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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