MAX5925 MAXIM [Maxim Integrated Products], MAX5925 Datasheet
MAX5925
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MAX5925 Summary of contents
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... MAX5925/MAX5926 also feature a circuit breaker with temperature-compensated R DS(ON) MAX5926 features a selectable 0ppm/°C or 3300ppm/°C temperature coefficient. The MAX5924 temperature coef- ficient is 0ppm/°C and the MAX5925 temperature coeffi- cient is 3300ppm/°C. Autoretry and latched fault- management configurations are available (see the Selector Guide ). Base Stations ...
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... 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. ELECTRICAL CHARACTERISTICS , EN (MAX5924/MAX5925), EN1 (MAX5926) = +2.7V to +13.2V; EN2 (MAX5926 -40° ...
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... Hot-Swap Controllers ELECTRICAL CHARACTERISTICS (continued (MAX5924/MAX5925), EN1 (MAX5926) = +2.7V to +13.2V; EN2 (MAX5926 -40°C to +85°C, unless otherwise noted. Typical values are open +25°C, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL Circuit-Breaker Programming I Current During Startup Circuit-Breaker Enable Threshold ...
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... Hot-Swap Controllers Require No Sense Resistor ELECTRICAL CHARACTERISTICS (continued (MAX5924/MAX5925), EN1 (MAX5926) = +2.7V to +13.2V; EN2 (MAX5926 -40°C to +85°C, unless otherwise noted. Typical values are open +25°C, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL LOGIC AND TIMING (TC, LATCH (MAX5926), EN2 (MAX5926) ...
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Hot-Swap Controllers ( 1µ 330nF SLEW GATE DRIVE VOLTAGE vs. TEMPERATURE 6 5 5. 3.0V CC ...
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Hot-Swap Controllers Require No Sense Resistor ( 1µ 330nF SLEW TURN-ON WAVEFORM (C = OPEN) SLEW GATE OUT PGOOD 200µs/div TURN-OFF WAVEFORM EN1 GATE PGOOD 2µs/div SHORT-CIRCUIT ...
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Hot-Swap Controllers ( 1µ 330nF SLEW OVERCURRENT FAULT AND AUTORETRY DELAY EN1 GATE SC_DET OUT 400ms/div UVLO RESPONSE >t DG GATE V CC 200µs/div _______________________________________________________________________________________ Require No ...
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... Hot-Swap Controllers Require No Sense Resistor PIN MAX5924A/ MAX5924B/ MAX5924C/ MAX5924D/ MAX5926 MAX5925A/ MAX5925B/ MAX5925C MAX5925D — 4 — 4 — — — 3 — — 6 — — 8 — ...
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... 10Ω CB GATE SENSE OUT V SC_DET CC 1µF MAX5925 PGOOD** MAX5926 EN (EN1**) PGOOD (PGOOD*) EN2** SLEW GND TC** LATCH** *MAX5925A AND MAX5925C. **MAX5926. ) SENSE R SENSE SENSE GATE OUT V SC_DET CC MAX5924 PGOOD** MAX5926 EN (EN1**) PGOOD (PGOOD*) EN2** SLEW GND ...
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... GATE 50kΩ 2µ CB,TH SLOW COMPARATOR V OSCILLATOR CBF,TH FAST COMPARATOR *MAX5924B, MAX5924D, MAX5925B, MAX5925D, MAX5926 ONLY. **MAX5924A, MAX5924C, MAX5925A, MAX5925C, MAX5926 ONLY. ***MAX5926 ONLY MAX5924 MAX5925 MAX5926 TIMER 0.2V LOGIC CONTROL SC_DET OUT PGOOD* PGOOD** ...
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... When power is first applied, the MAX5924/MAX5925/ MAX5926 hold the MOSFET off indefinitely if the supply voltage is below the undervoltage lockout level or if the device is disabled (see the EN (MAX5924/MAX5925), EN1/EN2 (MAX5926) section). If neither of these condi- tions exist, the device enters a UVLO startup delay period for ≈ ...
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... In each case, when a fault is encountered, the power- . good output deasserts and the device drives GATE low. After a fault, the MAX5924A, MAX5924B, MAX5925A, and MAX5925B latch GATE low and the MAX5924C, V MAX5924D, MAX5925C, and MAX5925D enter the OUT autoretry mode. The MAX5926 has selectable latched or autoretry modes ...
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... The power-good output(s) are open-drain output(s) that deassert: • When V • During t • When V • During load probing • When disabled (EN = GND (MAX5924/MAX5925), EN1 = GND or EN2 = high (MAX5926)) • During fault management • During t MAX5924B, MAX5925A, MAX5925B, or MAX5926 (LATCH = low)). 5 ...
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... If a 16V/ms output slew rate is used, the inrush current increases to 1.6A. Choose SR so the maximum anticipated inrush current does not trip the fast circuit-breaker comparator during startup. However, the DG. The MAX5924/MAX5925/MAX5926 limit the slew rate of exceeds approxi Connect an external capacitor, C OUT ...
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... Hot-Swap Controllers EN (MAX5924/MAX5925), EN1/ EN2 (MAX5926) The enable comparators control the on/off function of the MAX5924/MAX5925/MAX5926. Enable is also used to reset the fault latch in latch mode. Pull EN or EN1 low for 100µs to reset the latch. A resistive divider between EN or EN1, V ...
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... R dently. The fast-comparator trip current is given by: R Mode SENSE I TRIPFAST SC_DET should be connected SENSE OUT OUT SLOW CB,TH COMPARATOR MAX5925 MAX5926 FAST COMPARATOR Figure 13. Circuit Breaker Using R = 0.06Ω, or (0.06Ω) x (2.4A) = SENSE ( ) + TRIPSLOW SENSE the desired slow-comparator trip ...
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... Determine the device power-rating requirement to accommodate a short circuit on the board at startup with the device configured in autoretry mode . Using the MAX5924/MAX5925/MAX5926 in latched mode allows the consideration of MOSFETs with higher R and lower power ratings. A MOSFET can typically with- ______________________________________________________________________________________ Require No Sense Resistor Table 2 ...
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... RSENSE 3) Minimize power dissipation at full load current and RETRY at high temperature by selecting a MOSFET with an appropriate R difference between the MAX5924/MAX5925 rating MAX5926 and the MOSFET. For example, at room temperature the IRF7822’s R DS(ON) this device is 4000ppm/°C. The maximum R + for the MOSFET at T ...
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... Require No Sense Resistor the two devices are equal, the circuit-breaker trip threshold is most accurate. Keep the MOSFET and the MAX5925/MAX5926 as close to each other as possible to facilitate thermal coupling. HIGH-CURRENT PATH Figure 15. Kelvin Connection for the Current-Sense Resistor FAULT MANAGEMENT ...
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... Hot-Swap Controllers Require No Sense Resistor TOP VIEW SC_DET 2 MAX5924 EN 3 MAX5925 PGOOD (PGOOD) 4 GND 5 µMAX ( ) FOR THE MAX5924A, MAX5924C, MAX5925A, AND MAX5925C. Typical Operating Circuits TYPICAL OPERATION WITH R BACKPLANE REMOVABLE CARD R SENSE 2.25V TO 13. ...
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Hot-Swap Controllers REVISION REVISION NUMBER DATE 0 8/05 Initial release Revised data sheet title, General Description, Features, EC table, Typical 1 6/06 Operating Circuit, and added No-Load Operation section. 2 10/06 Initial release of MAX5924BEUB and ...