MAX5903 MAXIM [Maxim Integrated Products], MAX5903 Datasheet
MAX5903
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MAX5903 Summary of contents
Page 1
... The MAX5902/MAX5903 offer latched or auto-retry fault management and are available with 300mV, 400mV or 500mV circuit breaker thresholds. Both the MAX5902 and MAX5903 are available in a small SOT23 package, and are specified for the extended -40°C to +85°C tem- perature range. For specific ordering information refer to the selector guide at the end of the data sheet ...
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SOT23 Simple Swapper Hot-Swap Controllers ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND unless otherwise noted) , DRAIN, PGOOD, PGOOD ................................-0.3V to +76V V S ON/OFF ....................................................................-0.3V to +4V GATE to V ............................................................-12V to +0.3V S Current into ...
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... Typical values are 72V (MAX5902) PGOOD 72V (MAX5903) PGOOD T Junction temperature +25°C, unless otherwise noted. Specifications over -40°C to +85°C are guaran- A begins rising. Valid on conditions are: the device is not in undervolt- GS falls ...
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SOT23 Simple Swapper Hot-Swap Controllers (V = +48V, GND = 0, and T = +25°C, unless otherwise noted. See Figure 2 for test circuits GATE DRIVE VOLTAGE vs. INPUT VOLTAGE ...
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... Drain Sense Input for External P-Channel MOSFET. Connect DRAIN as close as possible to the MOSFET’s drain and use wide circuit traces to assure good thermal coupling between the MAX5902/MAX5903 and the MOSFET. See Layout Guidelines. Gate Drive Output for External P-Channel MOSFET Ground Connection Power Good Output ...
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... A power good output, PGOOD (MAX5902) or PGOOD (MAX5903), asserts when the external MOSFET is fully enhanced and the source-drain voltage is below the circuit breaker threshold. PGOOD and PGOOD are open-drain outputs referenced to GND, and can with- stand up to +72V. 50kΩ ...
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... A thermal shutdown feature protects the external MOS- FET by turning it off if the die temperature of the MAX5902/MAX5903 exceeds +125°C. The MAX5902/ MAX5903 must be in good thermal contact with the external MOSFET. See Layout Guidelines in the Appli- cations section of the data sheet. A circuit breaker function monitors the voltage across ...
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... PGOOD (PGOOD) deasserts if V longer than 10ms or ON/OFF is held low for longer than 10ms ON/OFF The MAX5902 PGOOD is active-low and the MAX5903 OFF ) UVLO PGOOD is active-high. Both are open-drain N-channel MOSFETs with their sources connected to GND, and can withstand up to +72V ...
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... Figure 7. Circuit Board Layout Example. Determining a circuit’s inrush current is necessary to ) help choose the proper MOSFET. The MAX5902/ MAX5903 regulate the inrush current by means of con- trolling the load voltage slew rate, but inrush current is also a function of load capacitance. Determine inrush current using: ...
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... SOT23 Simple Swapper Hot-Swap Controllers Layout Guidelines Good thermal contact between the MAX5902/ MAX5903 and the external MOSFET is essential for the thermal shutdown feature to operate effectively. Place the MAX5902/MAX5903 as close as possible to the drain of the external MOSFET, and use wide circuit board traces for good heat transfer ...
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SOT23 Simple Swapper Hot-Swap (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry ...