LTC4212CMS Linear Technology, LTC4212CMS Datasheet
LTC4212CMS
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LTC4212CMS Summary of contents
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... MS10 Package U APPLICATIO S Electronic Circuit Breaker Hot Board Insertion and Removal Self-Isolating Hot Swap Boards , LTC and LT are registered trademarks of Linear Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. U TYPICAL APPLICATIO Hot Swap Controller with Power Good Function BACKPLANE EDGE ...
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... V = 5V) GATE – V (For V = 12V) GATE – V (For V = 15V), (Note 3) GATE ORDER PART NUMBER TOP VIEW 1 10 FAULT LTC4212CMS LTC4212IMS 3 8 SENSE 4 7 GATE 5 6 PGI MS PACKAGE 10-LEAD PLASTIC MSOP MS PART = 125 C, = 200 MARKING LTC5 LTC6 MIN TYP MAX 2.5 16 ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are T SYMBOL PARAMETER V Power Good Glitch Filter High Threshold PGFHI V Power Good Glitch Filter Hysterisis PGFHST V Power Good Timer High Threshold PGTHI V Power Good Timer Low Threshold PGTLO V ...
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LTC4212 W U TYPICAL PERFOR A CE CHARACTERISTICS otherwise noted. Supply Current vs Supply Voltage 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 SUPPLY VOLTAGE (V) 4212 G01 GATE ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS otherwise noted. Fast GATE Pull-Down Current vs Supply Voltage SUPPLY VOLTAGE (V) 4212 G14 V (FAST ...
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LTC4212 W U TYPICAL PERFOR A CE CHARACTERISTICS otherwise noted. Power Good Timeout vs Temperature 20.0 19.5 19.0 18.5 18.0 17.5 17.0 16.5 16.0 15.5 15.0 –50 – 100 125 25 75 TEMPERATURE ( C) 4212 G41 PGF ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS otherwise noted. FAULT Pin Low to GATE Discharging Time vs Supply Voltage 4.5 4.0 3.5 3.0 2.5 2.0 1 SUPPLY VOLTAGE (V) 4212 G58 ...
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LTC4212 CTIO S ON (Pin 1): On/Off Control Input. The ON pin is used to enable and disable LTC4212 operation and reset internal logic and the electronic circuit breaker (ECB). It must be pulled high ...
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CTIO S FAULT (Pin 10): Open Drain FAULT Output or External FAULT Input. If the FAST COMP, SLOW COMP or the power good circuit trips the ECB, the FAULT pin is latched low. The FAULT ...
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LTC4212 U OPERATIO Hot Circuit Insertion When circuit boards are inserted into or removed from live backplanes, the supply bypass capacitors can draw huge transient currents from the backplane power bus as they charge. The transient current can cause permanent ...
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U OPERATIO set C = 10nF and adjust its value accordingly to suit TIMER the specific applications. Table TIMER TIMER C TIMER 0.0033 F 0.0047 F 0.0068 F 0.0082 F 0.01 F 0.015 F 0.022 F ...
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LTC4212 U OPERATIO Since the PGT is pulled to GND by M12 before the power good circuit is enabled, the first positive ramp at the PGT pin starts from 0V instead of the 0.65V for the subsequent 13 cycles. Power ...
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U OPERATIO V = 10V. From Equation 6, the slew rate is calculated 3.03V/ms. The inrush current being delivered to the load while the GATE pin is ramping depends on C external N-channel MOSFET acts as a ...
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LTC4212 U OPERATIO CHECK FOR GATE < 0.2V CHECK FOR FAULT HIGH FAST COMP ARMED 34V REF TIMER 1ST TIMING CYCLE (C ) TIMER GATE DC/DC CONVERTER OUTPUT ...
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U OPERATIO comparator outputs of a supply monitor such as the LTC1727 are similar to PGI (PGOOD) and PGF (PGOOD). First Timing Cycle When the PC board makes contact with the backplane (Time Point 1), V starts to rise. While ...
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LTC4212 U OPERATIO Electronic Circuit Breaker (ECB) Reset Sequence The ECB reset sequence is shown in Figure 2 from Time Points 17 through 19. At Time Point 17, the ON pin is taken low. Ten microseconds later at Time Point ...
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U OPERATIO CHECK FOR GATE < 0.2V CHECK FOR FAULT HIGH FAST COMP ARMED 2.34V REF TIMER GATE DC/DC CONVERTER OUTPUT (RST) DC/DC CONVERTER OUTPUT (PGOOD FAULT PGT ...
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LTC4212 U OPERATIO It consists of the time the FAULT pin takes to discharge C (Time Points 9 to 10), the 120 s needed to reset the AUTO circuit breaker (Time Points 9 to 11), the time it takes the ...
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U OPERATIO BACKPLANE EDGE CONNECTOR CONNECTOR (FEMALE) (MALE GND 2.34V V CC 1.316V ON V REF TIMER 1ST TIMING CYCLE (C ) TIMER GATE V – SENSE DC/DC CONVERTER ...
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LTC4212 U OPERATIO by the SLOW COMP’s threshold, V occurs should a load current fault condition exist for more than 18 s. The current level at which the electronic circuit breaker trips is given by Equation ...
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U OPERATIO For example sense resistor with limiting, the nominal trip current I TRIP(NOM) Equations 11 and 12 5.4A and I TRIP(MIN) 9.02A respectively. For proper operation and to avoid the circuit breaker ...
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LTC4212 U OPERATIO where • LOAD DS(ON) = junction-to-ambient thermal resistance maximum ambient temperature A(MAX short circuit happens during start-up, the external MOSFET can experience a big single ...
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... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... Hot Swap Controller with Triple Supply Sequencing in 16-Pin SSOP Operates from 10.8V to 80V, Autoretry/Latch Off www.linear.com 2.5V LT1963-2 1. 3.3V LT1963-3 1. 10k 10k CCA CC3 R6 LTC1326-2.5 2. RST V CC25 GND 4 4212 TA02 LT/TP 0304 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2003 4212f ...