MIC2594 MICREL [Micrel Semiconductor], MIC2594 Datasheet
MIC2594
Available stocks
Related parts for MIC2594
MIC2594 Summary of contents
Page 1
... If a fault condition ex- ceeds a built-in 400 s nuisance-trip delay, the MIC2588 and the MIC2594 will latch the circuit breaker’s output off and will remain in the off state until reset by cycling either the UV/OFF pin or the power to the IC. A master Power-Good signal is provided to indicate that the output voltage of the soft-start circuit is within its valid output range ...
Page 2
... SOIC Latched Off 8-pin SOIC Latched Off 8-pin SOIC Latched Off 8-pin SOIC 1 8 VDD DRAIN GATE VEE 4 5 SENSE 8-Pin SOIC (M) MIC2588-2BM 1 8 VDD DRAIN OFF 3 6 GATE VEE 4 5 SENSE 8-Pin SOIC (M) MIC2594-2BM December 2003 Micrel ...
Page 3
... Taken together, the OV and UV pins form a window comparator which defines the limits of V load may safely be powered. MIC2594: Turn-Off Threshold. When the voltage at the OFF pin is less than the V threshold, the GATE pin is immediately pulled low by an internal OFFL 100 A current pull-down ...
Page 4
... MIC2588/MIC2594 Absolute Maximum Ratings (All voltages are referred Supply Voltage (V – ......................... –0.3V to 100V DD EE DRAIN, PWRGD pins ................................... –0.3V to 100V GATE pin ..................................................... –0.3V to 12.5V SENSE, OV, UV, ON, OFF pins ....................... –0. (3) ESD Ratings Human Body Model ................................................... 2kV Soldering Vapor Phase .......................... (60 sec.) +220 Infrared ...
Page 5
... MIC2588/MIC2594 AC Electrical Characteristics Symbol Parameter t Built-in Overcurrent Nuisance Trip FLT Time Delay (Figure 1) t Overcurrent Sense to GATE Low OCSENSE (Figure GATE Low (Figure 3) OVPHL GATE High (Figure 3) OVPLH GATE Low (Figure 4) UVPHL GATE High (Figure 4) UVPLH ...
Page 6
... MIC2588/MIC2594 Typical Characteristics [Section under construction] MICx xxx vs. xxx XXX (X) MICx xxx vs. xxx XXX (X) MICx xxx vs. xxx ...
Page 7
... MIC2588/MIC2594 Timing Diagrams I LIMIT I LOAD 0A V DRAIN V GATE (V +10V SENSE EE V GATE Figure 2. SENSE to GATE LOW Timing Response GATE December 2003 OVERCURRENT EVENT t < FLT FLT Load current is regulated 50mV/R LIMIT SENSE ( ( Reduction support ...
Page 8
... MIC2588/MIC2594 GATE MIC2588/94-1 V DRAIN PWRGD not asserted V PWRGD PWRGD MIC2588/94-2 V DRAIN /PWRGD M9999-122303 1.223V t UVPHL 1V Figure 4. Undervoltage Response V V PGTH PGTH PGH1 PGL1 PWRGD asserted - High Impedance — DRAIN PGTH PGL2 V EE Figure 5. DRAIN to Power-Good Response 8 1 ...
Page 9
... MIC2588/MIC2594 Functional Diagram Internal VDD VDD Reference Generator SENSE + – VEE 50mV UV – TH(UV/OV) – December 2003 V DD1 and V REF1 Current Limit State Nuisance Trip Filter (400 s) Logic + Circuit Breaker MIC2588 Block Diagram 9 V DD1 45 A GATE 100 DD1 ...
Page 10
... Start-Up Cycle When the input voltage to the IC is between the overvoltage and undervoltage thresholds (MIC2588 greater than V (MIC2594), a start cycle is initiated. At this time, the ON GATE pin of the IC applies a constant charging current ( the gate of the external MOSFET (M1). C ...
Page 11
... I HOT_SWAP In this case, the application circuit must be sturdy enough to operate over a ~1.6-to-1 range in hot swap load currents. For example MIC2594 circuit must pass a minimum hot swap load current of 4A without nuisance trips, R exceeds 50mV, two should be set to standard value is 9.76m . At the other tolerance extremes, ...
Page 12
... Similarly to the MIC2588, each of these pins is internally connected to an M9999-122303 The analog comparator with 20mV of hysteresis. The MIC2594 holds the output off until the voltage at the ON pin exceeds its = 37V V threshold value given in the ...
Page 13
... MOSFET which, in turn, will appear at the DRAIN pin of the MIC2588/MIC2594. In both cases good engineering practice to include protective measures to avoid damaging sensitive ICs or the hot swap controller from these large-scale transients ...
Page 14
... MIC2588/MIC2594 Package Information 0.026 (0.65) 0.157 (3.99) 0.150 (3.81) 0.064 (1.63) 0.045 (1.14) MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...