参数资料
| 型号： | MAX8555EUB+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR MOSFET ORING 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 电信电源，整流器 |
| FET 型： | N 沟道 |
| 输出数： | 1 |
| 内部开关： | 无 |
| 延迟时间 - 关闭： | 100ns |
| 电源电压： | 8 V ~ 13.25 V |
| 电流 - 电源： | 2mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 管件 |
ATION
EVALU
AVAIL
13-3087; Rev 0; 1/04
KIT
ABLE
Low-Cost, High-Reliability, 0.5V to 3.3V ORing
MOSFET Controllers
General Description
Critical loads often employ parallel-connected power
supplies with redundancy to enhance system reliability.
The MAX8555/MAX8555A are highly integrated, inex-
pensive MOSFET controllers that provide isolation and
redundant power capability in high-reliability systems.
The MAX8555/MAX8555A are used in 0.5V to 3.3V sys-
tems, and have an internal charge pump to drive the
gates of the N-channel pass elements to (V CS+ + 5V).
During startup, the MAX8555/MAX8555A monitor the
voltage drop across the external MOSFETs. Once V CS+
approaches or exceeds the bus voltage (V CS- ), the
MOSFETs are turned on. The MAX8555/MAX8555A fea-
ture a dual-purpose TIMER input. A single external
resistor from TIMER to ground sets the turn-on speed of
the external MOSFETs. Optionally, the TIMER input can
be used as a logic enable input. Once the external
MOSFET is turned on, these controllers monitor the
load, protecting the bus against overvoltage, undervolt-
age, and reverse-current fault conditions. The
MAX8555 is available with a 40mV reverse-current
threshold, while the MAX8555A is available with a 20mV
reverse-current threshold.
Overvoltage and undervoltage fault thresholds are
adjustable and can be disabled. The current-limit trip
points are set by the external MOSFETs ’ R DS(ON) ,
reducing component count. An open-drain, logic-low
Features
? Simple, Integrated, and Inexpensive MOSFET
Controllers
? ORing FET Drive for 0.5V to 3.3V
? Eliminate ORing Diode Power Dissipation
? Provide N+1 Redundant Supply Capability for
Highly Reliable Systems
? Isolate Failed Short-Circuit Supply from
Output BUS
? Respond to Reverse Short-Circuit Current
in 200ns
? Adjustable Blank Time
? Programmable Soft-Start
? Logic Enable Input
? Adjustable Overvoltage and Undervoltage
Trip Points
? Fault-Indicator Output
? Space-Saving Packages
Ordering Information
fault output indicates if an overvoltage, undervoltage, or
reverse-current fault occurs. The MAX8555 and the
MAX8555A can shut down in response to a reverse-
current fault condition as quickly as 200ns.
Both devices come in space-saving 10-pin μMAX or
TDFN packages and are specified over the extended
-40 ° C to +85°C temperature range.
Applications
PART
MAX8555 ETB
MAX8555EUB
MAX8555A ETB
MAX8555AEUB
* Exposed paddle
TEMP
RANGE
-40 ° C to 85 ° C
-40 ° C to 85 ° C
-40 ° C to 85 ° C
-40 ° C to 85 ° C
PIN-
PACKAGE
10 TDFN
3mm x 3mm*
10 μMAX
10 TDFN
3mm x 3mm*
10 μMAX
TOP
MARK
ACC
8555EUB
ADD
8555AEUB
Point-of-Load Supplies
Power-Supply Modules
Servers
Telecom Power Supplies
TOP VIEW
Pin Configurations
Rectifiers
GATE 1
10 CS+
GATE
1
10 CS+
Redundant Power Supplies in High-Availability
Systems
GND
VL
2
3
MAX8555/
MAX8555A
9
8
CS-
OVP
GND
VL
2
3
MAX8555/
MAX8555A
9 CS-
8 OVP
V DD
UVP
4
5
7
6
FAULT
TIMER
V DD
UVP
4
5
7 FAULT
6 TIMER
Typical Operating Circuit appears at end of data sheet.
μ MAX
TDFN
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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| MAX8555EUB+ | 功能描述:功率驱动器IC .5-3.3V 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 |
| MAX8555EUB+T | 功能描述:功率驱动器IC .5-3.3V 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 |
| MAX8555EUB-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 |
| MAX8556ETE | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8556ETE/GG8 | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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