MAX5944ESE+ Maxim Integrated Products, MAX5944ESE+ Datasheet
MAX5944ESE+
Specifications of MAX5944ESE+
Related parts for MAX5944ESE+
MAX5944ESE+ Summary of contents
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... FireWire Hub Hot Swap Typical Operating Circuit appears at end of data sheet. FireWire is a registered trademark of Apple Computer, Inc. ________________________________________________________________ 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. ORing Switch Controller ♦ ...
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Dual FireWire Current Limiter and Low-Drop ORing Switch Controller ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND, unless otherwise noted.) IN_ ..........................................................................-0.3V to +80V OUT_ ......................................................................-0.3V to +80V SENSE_ to IN_ ..........................................................-1V to +0.3V GATE1_ to SENSE_ ..................................................-0.3V to +8V GATE2_ ...
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Dual FireWire Current Limiter and Low-Drop ELECTRICAL CHARACTERISTICS (continued 7.5V to 37V, GND = 0V, and (Note 1) PARAMETER SYMBOL GATE2_ Peak Pulldown Current GATE2_ Pulldown Current During Any GATE2_ Turn-Off Condition (Note 4) GATE1_ ...
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Dual FireWire Current Limiter and Low-Drop ORing Switch Controller ELECTRICAL CHARACTERISTICS (continued 7.5V to 37V, GND = 0V, and (Note 1) PARAMETER SYMBOL TIMING Current-Limit Timeout t Automatic Restart Delay After t Current-Limit Timeout (Note ...
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Dual FireWire Current Limiter and Low-Drop (V = +12V +25°C, unless otherwise noted.) IN_ A CURRENT-LIMIT TIMEOUT vs. TEMPERATURE 2.30 2.25 2.20 2.15 2.10 2.05 2.00 -40 - TEMPERATURE ( ° C) GATE1 DRIVE VOLTAGE ...
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Dual FireWire Current Limiter and Low-Drop ORing Switch Controller (V = +12V +25°C, unless otherwise noted.) IN_ A ORing THRESHOLD RESPONSE TIME 100µs/div SHORT-CIRCUIT EVENT (V = 37V) IN 400µs/div SHORT-CIRCUIT RESPONSE (V = 8V) IN 400µs/div 6 ...
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Dual FireWire Current Limiter and Low-Drop (V = +12V +25°C, unless otherwise noted.) IN_ A ORing SWITCHOVER WAVEFORM 200µs/div V = 12V INA V = 12.8V INB ORing SWITCHOVER WAVEFORM (V FALLING BELOW V INB 20µs/div V = ...
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Dual FireWire Current Limiter and Low-Drop ORing Switch Controller PIN NAME Channel A Input Power and Current-Sense Positive Input. Connect INA to the other end of the current- 1 INA sense resistor and to the power source (see the Typical ...
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Dual FireWire Current Limiter and Low-Drop BATTERY SOURCE INA ONQ1 MAX5944 UVLO COMPARATOR 6.5V ONA COMPARATOR ONA 1.24V 1.24V ONB ONB COMPARATOR 6.5V UVLO COMPARATOR INB POWER SOURCE Figure 1. MAX5944 Functional Diagram _______________________________________________________________________________________ ORing Switch Controller R SENSEA Q1 ...
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Dual FireWire Current Limiter and Low-Drop ORing Switch Controller Detailed Description The MAX5944 dual-channel controller IC performs hot- swapping, power-supply ORing, and current limiting for FireWire power-supply applications. The MAX5944 incorporates four MOSFET drivers (GATE1_ and GATE2_) to control external ...
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Dual FireWire Current Limiter and Low-Drop V FAULT t ILIM I OUT V GATE1 V GATE2 OUT LIMIT LOAD (a) V FAULT < t ILIM I OUT V GATE1 V GATE2 LIMIT LOAD ...
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Dual FireWire Current Limiter and Low-Drop ORing Switch Controller V INA I INA I INB V OUT V INB V > V INB INA Figure 5. MAX5944 Power Switch Over ORing Timing Diagram Undervoltage Lockout The MAX5944 dual-channel, independent current-limit ...
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Dual FireWire Current Limiter and Low-Drop V IN IN_ R1 MAX5944 ON_ R2 GND Figure 7. Setting the MAX5944 Turn-On Voltage to 1/129 under continuous fault conditions. FAULT_ deasserts every time a restart attempt is made. Applications Information Startup Considerations ...
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Dual FireWire Current Limiter and Low-Drop ORing Switch Controller PHY POWER OUT 15mΩ CABLE POWER SOURCE INA SENSEA GATE1A ONA ONQ1 GND ONB INB SENSEB GATE1B BATTERY-POWER SOURCE 15mΩ CABLE NOT ON SLEEP Figure 9. Two-Port FireWire Power Provider POWER ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2004 Maxim Integrated Products ...