MAX8536

更新时间： 2024-11-24 23:51:59

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
19页	306K
描述
ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power Supplies

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MAX8536 数据手册

19-2735; Rev 0; 1/03

ORing MOSFET Controllers with Fastest

Fault Isolation for Redundant Power Supplies

General Description

Features

Critical loads often employ parallel-connected power

supplies with redundancy in order to enhance system

reliability. The MAX8535/MAX8536 are highly integrated

but inexpensive MOSFET controllers that provide isolation

and redundant power capability in high-reliability

systems. The MAX8535 is used in 12V systems, and has

an internal charge pump to drive the gates of the N-

ꢀ Simple, Integrated, and Inexpensive ORing

MOSFET Controller

ꢀ ORing MOSFET Drive for 12V (MAX8535) and 3.3V

or 5V (MAX8536) Bus

ꢀ Eliminates ORing Diode Power Dissipation and

Reverse Leakage Current

channel pass elements to V

+ 10V. The MAX8536 is

ꢀ Provides N + 1 Redundant Supply Capability for

used in 3.3V and 5V systems, with a charge-pump output

of V + 5V.

Highly Reliable Systems

During startup, the MAX8535/MAX8536 monitor the

ꢀ Isolates Failed Supply from Output Bus in <1µs

ꢀ Reverse-Current Flow Detection

ꢀ Programmable Soft-Start

voltage drop across external MOSFETs. Once V

approaches or exceeds the bus voltage, the MOSFETs

are turned on. The MAX8535/MAX8536 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 monitor the load, protecting

against overvoltage, undervoltage, and reverse-current

conditions.

ꢀ Logic-Enable Input

ꢀ Adjustable Overvoltage and Undervoltage Trip

Points

ꢀ Fault-Indicator Output

ꢀ Space-Saving 8-Pin µMAX Package

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)

Ordering Information

reducing component count. An open-drain logic-low

fault output indicates if an overvoltage, undervoltage, or

reverse-current fault occurs.

PART

MAX8535EUA

MAX8536EUA

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

8 µMAX

Both devices come in a space-saving 8-pin µMAX

package and are specified over the extended -40°C to

+85°C temperature range.

8 µMAX

Applications

Typical Operating Circuit

Silver Box Supplies for Servers

OUTPUT:

3.3V/5V

(MAX8536),

12V

+V -V

O O

On-Board Redundant Power Supplies in Blade

Servers

(MAX8535)

OUT+

Network/Telecom Power Supplies

Rectifiers

Redundant Power Supplies in High-Availability

Systems

SILVER BOX

RECTIFIERS

GATE

FAULT

MAX8535

MAX8536

N.C.

UVP

OVP

TIMER

GND

Pin Configuration, Functional Diagrams, and Typical

Application Circuits appear at end of data sheet.

OUT-

________________________________________________________________ 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.

12 3 4 5 6 7...19

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与MAX8536相关器件

型号	品牌	获取价格	描述	数据表
MAX8536EUA	MAXIM	获取价格	ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power Supplies
MAX8536EUA+	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO8, MICRO, MO-187C-AA, SOP
MAX8536EUA-T	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO8, MICRO, MO-187C-AA, SOP
MAX8536EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX8536
MAX8537	MAXIM	获取价格	Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Suppl
MAX8537	ADI	获取价格	双路同步buck控制器，用于负载点、跟踪和DDR存储器供电
MAX8537\|MAX8538\|MAX8539	MAXIM	获取价格	Dual-Synchronous Buck Controllers for Point-of-Load. Tracking. and DDR Memory Power Suppli
MAX8537EEI	MAXIM	获取价格	Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Suppl
MAX8538	ETC	获取价格	PLASTIC ENCAPSULATED DEVICES
MAX8538	ADI	获取价格	双路同步buck控制器，用于负载点、跟踪和DDR存储器供电

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