Electronic Components Datasheet Search |
|
MIC2595R-2BM Datasheet(PDF) 4 Page - Micrel Semiconductor |
|
MIC2595R-2BM Datasheet(HTML) 4 Page - Micrel Semiconductor |
4 / 29 page Micrel MIC2589/MIC2595 December 2005 4 M9999-120505 (408) 955-1690 Pin Description Pin Number Pin Name Pin Function 1 PWRGD1 (MIC25XX-1) Active High /PWRGD1 (MIC25XX-2) Active Low Power-Good Output 1: Asserted when the voltage on the DRAIN pin (VDRAIN) is within VPGTH of VEE, indicating that the output voltage is within proper specifications. For the MIC2589-1 and MIC2595-1, PWRGD1 will be high impedance when VDRAIN is less than VPGTH, and will pull-down to VDRAIN when VDRAIN is greater than VPGTH. For the MIC2589-2 and MIC2595-2, /PWRGD1 will pull-down to VDRAIN when VDRAIN is less than VPGTH, and will be high-impedance when VDRAIN is greater than VPGTH. 2 PGTIMER A capacitor connected from this pin to VEE sets the time interval between assertions of PWRGD2 (or /PWRGD2) and PWRGD3 (or /PWRGD3) relative to PWRGD1 (or /PWRGD1). See the “Functional Description” for further detail. 3 UV (MIC2589 and MIC2589R) Undervoltage Threshold Input: When the voltage at the UV pin is less than the VUVL threshold, the GATE pin is immediately pulled low by an internal 100µA current pull- down. The UV pin is also used to cycle the device off and on to reset the circuit breaker. Taken together, the OV and UV pins form a window comparator that defines the limits of VEE to deliver power to the load. 3 OFF (MIC2595 and MIC2595R) Turn-Off Threshold: When the voltage at the OFF pin is less than the VOFFL threshold, the GATE pin is immediately pulled low by an internal 100µA current pull- down. The OFF pin is also used to cycle the device off and on to reset the circuit breaker. Taken together, the ON and OFF pins provide programmable hysteresis for the MIC2595 to be enabled. 4 OV (MIC2589 and MIC2589R) Overvoltage Threshold Input: When the voltage at the OV pin is greater than the VOVH threshold, the GATE pin is immediately pulled low by an internal 100µA current pull-down. 4 ON (MIC2595 and MIC2595R) Turn-On Threshold: At initial system power-up or after the part has been shut off by the OFF pin, the voltage on the ON pin must be above the VONH threshold in order for the MIC2595 to be enabled. 5 CFILTER Current Limit Response Timer: A capacitor connected between this pin and VEE provides filtering against nuisance tripping of the circuit breaker by setting a time delay, tFLT, for which an overcurrent event must last prior to signaling a fault condition and latching the output off. The minimum time for tFLT will be the time it takes for the output (capacitance) to charge to VEE during start-up. This pin is held to VEE with a 3µA current pull-down when no current limit condition exists. See the “Functional Description” for further details. 6 CNLD No-Load Detect Timer: The absence of a load for the MIC2589/MIC2589R is defined for any current load that is less than 20% of the full-scale current limit (i.e., 0.20 × ILIM). A capacitor between CNLD and VEE sets the filter delay, tNLD, for a load current that is 80% (or greater) below the full-scale current limit before the circuit breaker is tripped. 7 VEE Negative Supply Voltage Input: Connect the negative, or low side, terminal of the input power supply. 8 NC No Internal Connection 9 SENSE Circuit Breaker Sense Input: A resistor between this pin and VEE sets the current limit trip point for the circuit. When the current limit threshold of IR = 50mV is exceeded for tFLT, the circuit breaker is tripped and the GATE pin is immediately pulled low by IGATEOFF. Toggling UV or OV will reset the circuit breaker. In order to disable the circuit breaker (i.e., eliminate overcurrent VSENSE-VEE protection), connect (short) the SENSE pin to VEE and also connect the CNLD pin to VEE to disable the no-load detection feature. 10 GATE Gate Drive Output: Connects to the Gate of an N-Channel MOSFET. 11 DRAIN Drain Sense Input: Connects to the Drain of an N-Channel MOSFET. |
Similar Part No. - MIC2595R-2BM |
|
Similar Description - MIC2595R-2BM |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |