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MAX5042 Datasheet

  • MAX5042

  • 雙路開關(guān)電源IC，集成了功率MOSFET和熱插拔控制器

  • 22頁

  • MAXIM   MAXIM

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上傳產(chǎn)品規(guī)格書

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19-3046; Rev 2; 6/04
IT
TION K
VALUA
E
BLE
AVAILA
Two-Switch Power ICs with Integrated
Power MOSFETs and Hot-Swap Controller
General Description
Features
鈾?/div>
Reliable Single-Stage Clamped Two-Switch Power
ICs for High Efficiency
鈾?/div>
No Reset Winding Required
鈾?/div>
Up to 50W Output Power
鈾?/div>
Integrated High-Voltage 75m鈩?Power MOSFETs
鈾?/div>
20V to 76V Wide Input Voltage Range
鈾?/div>
Feed-Forward Voltage or Current-Mode Control
鈾?/div>
Programmable Brownout Undervoltage Lockout
鈾?/div>
Integrated Current Signal Amplifier for High-
Efficiency, Current-Mode Control
鈾?/div>
Internal Overtemperature Shutdown
鈾?/div>
Indefinite Short-Circuit Protection
鈾?/div>
Integrated Thermally Protected High-Voltage
Startup Linear Regulator
鈾?/div>
Integrated Hot-Swap Controller (MAX5042)
鈾?/div>
Integrated Look-Ahead Signal Output Drives
High-Speed Optocoupler for Secondary-Side
Synchronous Rectification
鈾?/div>
>90% Efficiency with Synchronous Rectification
鈾?/div>
Up to 500kHz Switching Frequency
鈾?/div>
High-Power, Small-Footprint 56-Pin Thermally
Enhanced QFN Package
MAX5042/MAX5043
The MAX5042/MAX5043 isolated multimode PWM power
ICs feature integrated switching power MOSFETs con-
nected in a voltage-clamped, two-transistor, power-circuit
configuration. These devices operate from a wide 20V to
76V input voltage range. The MAX5042 includes a hot-
swap controller for use with an external power MOSFET to
limit inrush current for applications where the power sup-
ply is plugged into a live power backplane. The MAX5043
does not include a hot-swap controller.
The voltage-clamped power topology of the MAX5042/
MAX5043 enables full recovery of stored magnetizing
and leakage inductive energy for enhanced efficiency
and reliability. Operating at up to 500kHz switching fre-
quency, these devices provide up to 50W of output
power. The MAX5042/MAX5043 allow the implementa-
tion of both forward and flyback voltage or current-mode
converter topologies. A dedicated latched external shut-
down provides protection in addition to internal thermal
shutdown.
The MAX5042/MAX5043 achieve higher efficiency when
used with secondary-side synchronous rectification.
These devices generate a look-ahead signal for driving
secondary-side synchronous rectifiers.
The MAX5042/MAX5043 are rated for operation over the
-40擄C to +125擄C and -40擄C to +85擄C temperature
range, respectively, and are available in a small surface-
mount 56-pin thin QFN package.
Warning: The MAX5042/MAX5043 are designed to
work with high voltages. Exercise caution.
Applications
High-Efficiency Telecom/Datacom Power
Supplies
Router/Switch Cards with 48V Backplane Power
Systems
Servers with 48V Backplane Power Systems
xDSL Line Cards
xDSL Line-Driver Power Supplies
Distributed Power Systems with 48V Bus
42V Automotive Power Supplies
Power-Supply Modules
MAX5042
PART
PART
MAX5042ATN
MAX5043ETN
Ordering Information
TEMP RANGE
-40擄C to +125擄C
-40擄C to +85擄C
PIN-PACKAGE
56 Thin QFN
56 Thin QFN
Selector Guide
DESCRIPTION
Two-Switch Power IC with Integrated Power
MOSFETs and Hot-Swap Controller for Isolated
Power Supplies
Two-Switch Power IC with Integrated Power
MOSFETs for Isolated Power Supplies
MAX5043
Pin Configurations appear at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX5042 PDF文件相關(guān)型號

MAX5042EVKIT,MAX5043

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