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| 型号： | MAX8585EUA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR ORING MOSFET 8-MSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 网络/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： | 200ns |
| 电源电压： | 8 V ~ 14 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： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
19-2735; Rev 1; 3/04
ATION
EVALU
AVAILA
K
BLE
IT
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
General Description
Critical loads often employ parallel-connected power
supplies with redundancy in order to enhance system
reliability. The MAX8535/MAX8536/MAX8585 are highly
integrated but inexpensive MOSFET controllers that pro-
vide isolation and redundant power capability in high-reli-
ability systems. The MAX8535/MAX8585 are used in 12V
systems, and have an internal charge pump to drive the
gates of the n-channel pass elements to V CC + 10V. The
MAX8536 is used in 3.3V and 5V systems, with a charge-
pump output of V CC + 5V.
During startup, the MAX8535/MAX8536/MAX8585 moni-
tor the voltage drop across external MOSFETs. Once
V CC approaches or exceeds the bus voltage, the
MOSFETs are turned on. The MAX8535/MAX8536/
MAX8585 feature 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 pin. Once the
device is turned on, the MAX8535/MAX8536/MAX8585
monitor the load, protecting against overvoltage, under-
voltage, and reverse-current conditions.
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) ,
Features
? Simple, Integrated, and Inexpensive ORing
MOSFET Controller
? ORing MOSFET Drive for 12V
(MAX8535/MAX8585) and 3.3V or 5V
(MAX8536) Bus
? Eliminates ORing Diode Power Dissipation and
Reverse Leakage Current
? Provides N + 1 Redundant Supply Capability for
Highly Reliable Systems
? Isolates Failed Supply from Output Bus in <1μs
? Reverse-Current Flow Detection
? Programmable Soft-Start
? Logic-Enable Input
? Adjustable Overvoltage and Undervoltage Trip
Points
? Fault-Indicator Output
? Space-Saving 8-Pin μMAX Package
Ordering Information
reducing component count. An open-drain logic-low
fault output indicates if an overvoltage, undervoltage, or
reverse-current fault occurs.
All devices come in a space-saving 8-pin μMAX ?
package and are specified over the extended -40°C to
+85°C temperature range.
PART
MAX8535 EUA
MAX8535AEUA
MAX8536 EUA
MAX8585 EUA
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 μMAX
8 μMAX
8 μMAX
8 μMAX
μMAX is a registered trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
Applications
Silver Box Supplies for Servers
OUTPUT:
3.3V/5V
(MAX8536),
12V
+V O -V O
On-Board Redundant Power Supplies in Blade
Servers
Network/Telecom Power Supplies
Rectifiers
OUT+
(MAX8535)
Redundant Power Supplies in High-Availability
Systems
SILVER BOX
OR
RECTIFIERS
V CC
GATE
CS
FAULT
MAX8535
MAX8536
UVP
N.C.
Pin Configuration, Functional Diagrams, and Typical
Application Circuits appear at end of data sheet.
OUT-
TIMER
MAX8585
GND
OVP
________________________________________________________________ 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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