MAX8535AEUA ,ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power SuppliesFeaturesCritical loads often employ parallel-connected power♦ Simple, Integrated, and Inexpensive O ..
MAX8535AEUA ,ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power SuppliesELECTRICAL CHARACTERISTICS(V = 12V (MAX8535/MAX8535A/MAX8585), V = 5V (MAX8536), V = V - 0.1V, R = ..
MAX8535EUA ,ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power SuppliesFeaturesCritical loads often employ parallel-connected power♦ Simple, Integrated, and Inexpensive O ..
MAX8535EUA ,ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power SuppliesMAX8535/MAX8536/MAX858519-2735; Rev 1; 3/04ORing MOSFET Controllers w ith Fastest Fault Isolation f ..
MAX8535EUA ,ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power SuppliesELECTRICAL CHARACTERISTICS(V = 12V (MAX8535/MAX8535A/MAX8585), V = 5V (MAX8536), V = V - 0.1V, R = ..
MAX8536EUA ,ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power SuppliesApplications3.3V/5V +V -VO O(MAX8536),Silver Box Supplies for Servers 12V(MAX8535)OUT+On-Board Redu ..
MB81F643242C-10FN ,4 x 512K x 32 bit synchronous dynamic RAMFUJITSU SEMICONDUCTORADVANCED INFO. AE0.1EDATA SHEETMEMORYCMOS4 · 512 K · 32 BITSYNCHRONOUS DYNAMIC ..
MB81F643242C-10FN ,4 x 512K x 32 bit synchronous dynamic RAMfeatures a fully synchronous operation referenced to a positive edge clock whereby all operations a ..
MB81N643289-60FN ,8 x 256K x 32 bit double data rate FCRAMapplications where large memory density and high effective bandwidth arerequired and where a simple ..
MB8264A-10 , MOS 65536-BIT DYNAMIC RANDOM ACCESS MEMORY
MB8264A-10 , MOS 65536-BIT DYNAMIC RANDOM ACCESS MEMORY
MB8264A-10 , MOS 65536-BIT DYNAMIC RANDOM ACCESS MEMORY
MAX8535AEUA
ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power Supplies
General DescriptionCritical 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 VCC+ 10V. The
MAX8536 is used in 3.3V and 5V systems, with a charge-
pump output of VCC+ 5V.
During startup, the MAX8535/MAX8536/MAX8585 moni-
tor the voltage drop across external MOSFETs. Once
VCCapproaches or exceeds the bus voltage, the
MOSFETs are turned on. The MAX8535/MAX8536/
MAX8585feature 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’ RDS(ON),
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.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
ApplicationsSilver Box Supplies for Servers
On-Board Redundant Power Supplies in Blade
Servers
Network/Telecom Power Supplies
Rectifiers
Redundant Power Supplies in High-Availability
Systems
FeaturesSimple, Integrated, and Inexpensive ORing
MOSFET ControllerORing MOSFET Drive for 12V
(MAX8535/MAX8585) and 3.3V or 5V
(MAX8536) BusEliminates ORing Diode Power Dissipation and
Reverse Leakage CurrentProvides N + 1 Redundant Supply Capability for
Highly Reliable SystemsIsolates Failed Supply from Output Bus in <1µsReverse-Current Flow DetectionProgrammable Soft-StartLogic-Enable InputAdjustable Overvoltage and Undervoltage Trip
PointsFault-Indicator OutputSpace-Saving 8-Pin µMAX Package
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
Typical Operating Circuit
Ordering Information19-2735; Rev 1; 3/04
Pin Configuration, Functional Diagrams, and Typical
Application Circuits appear at end of data sheet.
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VCC= 12V (MAX8535/MAX8535A/MAX8585), VCC= 5V (MAX8536), VCS= VCC - 0.1V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
GATE to GND (MAX8535/MAX8535A/MAX8585)...-0.3V to +28V
VCCto GND (MAX8535/MAX8535A/MAX8585).....-0.3V to +18V
CS, FAULTto GND
(MAX8535/MAX8535A/MAX8585)......................-0.3V to +15V
GATE to GND (MAX8536)............................-0.3V to (VCC + 6V)
VCC, CS, FAULTto GND (MAX8536).......................-0.3V to +6V
OVP, UVP, TIMER to GND........................................-0.3V to +6V
Continuous Power Dissipation (TA= +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C).............362mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature.........................................………..+150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
ELECTRICAL CHARACTERISTICS (continued)(VCC= 12V (MAX8535/MAX8535A/MAX8585), VCC= 5V (MAX8536), VCS= VCC - 0.1V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
ELECTRICAL CHARACTERISTICS(VCC= 12V (MAX8535/MAX8535A/MAX8585), VCC= 5V (MAX8536), VCS= VCC - 0.1V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE
ELECTRICAL CHARACTERISTICS (continued)(VCC= 12V (MAX8535/MAX8535A/MAX8585), VCC= 5V (MAX8536), VCS= VCC - 0.1V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
ELECTRICAL CHARACTERISTICS (continued)(VCC= 12V (MAX8535/MAX8535A/MAX8585), VCC= 5V (MAX8536), VCS= VCC - 0.1V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE
= 0.01µF, TA
= -40°C to +85°C, unless otherwise noted.) (Note 1)
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(VCC= 12V (MAX8535/MAX8535A/MAX8585), VCC= 5V (MAX8536), VCS= VCC - 0.1V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE
= 0.01µF, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)
Note 1:Specifications to -40°C are guaranteed by design and not production tested.
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
State Diagram
MAX8535 Typical Operating Characteristics
(VCC = 12V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE= 0.01µF, BUS = 100µF, TA= +25°C, unless otherwise specified.)
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
MAX8535 Typical Operating Characteristics (continued)
(VCC = 12V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE= 0.01µF, BUS = 100µF, TA= +25°C, unless otherwise specified.)
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
MAX8536 Typical Operating Characteristics
(VCC = 12V, RTIMER= 25kΩ, UVP = 2V, OVP = 1V, CGATE= 0.01µF, BUS = 100µF, TA= +25°C, unless otherwise specified.)
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
