MIC2587-2YM Micrel Inc, MIC2587-2YM Datasheet
MIC2587-2YM
Specifications of MIC2587-2YM
MIC2587-2YM
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MIC2587-2YM Summary of contents
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... Part Number Standard Pb-Free MIC2587-1BM MIC2587-1YM MIC2587-2BM MIC2587-2YM MIC2587R-1BM MIC2587R-1YM MIC2587R-2BM MIC2587R-2YM Power, Connect, and Protect is a trademark of Micrel Inc. Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax +1 (408) 474-1000 • http://www.micrel.com ...
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... Micrel Typical Application Pin Configuration 8-pin SOIC (M) MIC2587-1BM MIC2587R-1BM October 2004 MIC2587/87R Typical Application Circuit 2 MIC2587/MIC2587R 8-pin SOIC (M) MIC2587-2BM MIC2587R-2BM M9999-102204 (408) 955-1690 ...
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... A capacitor connected from this pin to GND provides overcurrent filtering to prevent nuisance “tripping” of the circuit breaker by setting the time (t ) for which the controller is allowed to remain in current limit. Once the MIC2587 circuit FLT breaker trips, the output latches off. Under normal (steady state) operation, the TIMER pin is held to GND by an internal 3.5µ ...
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... The nominal operating voltage range for the MIC2587 and the MIC2587R is +10V to +80V, and VCC can withstand input transients up to +100V. An undervoltage lockout circuit holds the GATE pin low whenever the supply voltage to the MIC2587 and the MIC2587R is less than the V threshold ...
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... CC SENSE TRIP = V ) GATE[TH GATE Normal turn-off, or from V (MOSFET after a fault condition (V – > SENSE TRIP TIMER 5 MIC2587/MIC2587R (2) )...................................... +10V to +80V CC ) ............... -40°C to +85° ....................................... +125° 8-pin SOIC...................................................... 160 °C/W Min Typ 10 2 7.5 8.0 7.0 7.5 500 1.280 1.313 1.208 1 ...
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... PG C =100pF 50kΩ pull-up to 48V PG C =100pF 50kΩ pull-up to 48V PG C =100pF 10mV) CC SENSE TRIP Figure 7 6 MIC2587/MIC2587R Min Typ 1.5 3.5 1.280 1.313 0.4 0.49 1.280 1.313 1.208 1.233 80 Min Typ 3 = 10nF Max Units µ ...
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... Micrel Timing Diagrams Figure 1. Foldback Current Limit Transfer Characteristic Figure 3. MIC2587/87R PWRGD Timing October 2004 Figure 4. MIC2587/87R /PWRGD Timing Figure 5. Overcurrent Sense to GATE Timing 7 MIC2587/MIC2587R Figure GATE Timing M9999-102204 (408) 955-1690 ...
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... Micrel Function Diagram October 2004 MIC2587/MIC2587R Block Diagram 8 MIC2587/MIC2587R M9999-102204 (408) 955-1690 ...
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... The procedure for selecting a value for C given in the "Circuit Breaker Operation" section. Overcurrent Protection The MIC2587 and the MIC2587R use an external, low- value resistor in series with the drain of the external MOSFET to measure the current flowing into the load. The VCC connection (Pin 8) and the SENSE connection (Pin 7) are the (+) and (-) inputs, respectively, of the device's internal current sensing circuits ...
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... SENSE the circuit’s V pin and SENSE CC MIC2587/MIC2587R, a fault current timing circuit is set via an external capacitor (C ) that determines the length of TIMER the time delay (t ) for which the controller remains in FLT current limit before the circuit breaker is tripped. Programming the response time of the overcurrent detector ...
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... UVL October 2004 Power-is-Good Output Signals until For the MIC2587-1 and MIC2587R-1, the power-good TIMERDN output signal (PWRGD) will be high impedance when the TIMERL FB pin voltage is higher than the V pull down to GND when the FB pin voltage is lower than ...
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... Micrel Applications Information External ON/OFF Control The MIC2587/MIC2587R have an ON pin input that is used to enable the controller to commence a start-up sequence upon card insertion or to disable controller operation upon card removal. In addition, the ON pin can be used to reset the MIC2587/MIC2587R’s internal electronic circuit breaker in the event of a load current fault ...
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... I ( HOT_SWAP(MAX) 0.97 × R SENSE(NOM) In this case, the application circuit must be sturdy enough to operate over a ~1.5-to-1 range in hot swap load currents. For example MIC2587 circuit must pass a minimum hot swap load current of 4A without nuisance trips, R should be set to: SENSE 39mV = = Ω ...
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... Micrel Figure 6. 4-Wire Kelvin Sense Connections for R Figure 8. Recommended PCB Layout for Sense Resistor, October 2004 Figure 7. Current Limit Sense Filter for Noisy SENSE Power MOSFET, Timer and Feedback Network. 14 MIC2587/MIC2587R Systems M9999-102204 (408) 955-1690 ...
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... Series www.vishay.com/docswsl_30100.pdf (203) 452-5664 “OARS” Series www.irctt.com/pdf_files/OARS.pdf “LR” Series www.irctt.com/pdf_files/LRC.pdf second source to “WSL” (828) 264-8861 Table 1. MOSFET and Sense Resistor Vendors 15 MIC2587/MIC2587R ) Contact Information DSS 60V www.siliconix.com 60V (203) 452-5664 60V 100V www.siliconix.com ...
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... Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any October 2004 8-Pin SOIC (M) damages resulting from such use or sale. © 2004 Micrel, Incorporated. 16 MIC2587/MIC2587R M9999-102204 (408) 955-1690 ...