LTC4223 LINER [Linear Technology], LTC4223 Datasheet
LTC4223
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LTC4223 Summary of contents
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FeaTures Power Path and Inrush Current Control for n Redundant Supplies Low Loss Replacement for Power Schottky Diodes n Protects Output Voltage from Input Brownouts n Allows Safe Hot Swapping from a Live Backplane n 2.9V to 18V Operating Range ...
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LTC4228-1/LTC4228-2 absoluTe MaxiMuM raTings Supply Voltages IN1, IN2 .................................................. –0.3V to 24V INTV ..................................................... –0. Input Voltages ON1, ON2, EN1, EN2............................... –0.3V to 24V TMR1, TMR2 .........................–0.3V to INTV + + SENSE1 , SENSE2 ................................ –0.3V to ...
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LEAD FREE FINISH TAPE AND REEL LTC4228CUFD-1#PBF LTC4228CUFD-1#TRPBF LTC4228CUFD-2#PBF LTC4228CUFD-2#TRPBF LTC4228IUFD-1#PBF LTC4228IUFD-1#TRPBF LTC4228IUFD-2#PBF LTC4228IUFD-2#TRPBF LTC4228CGN-1#PBF LTC4228CGN-1#TRPBF LTC4228CGN-2#PBF LTC4228CGN-2#TRPBF LTC4228IGN-1#PBF LTC4228IGN-1#TRPBF LTC4228IGN-2#PBF LTC4228IGN-2#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified ...
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LTC4228-1/LTC4228-2 elecTrical characTerisTics temperature range, otherwise specifications are at T SYMBOL PARAMETER ∆V Gate-Source Voltage for Power Good HGATE(PG) I External N-Channel Gate Pull-Up Current HGATE(UP) I External N-Channel Gate Pull-Down Current HGATE(DN) I External N-Channel Gate Fast HGATE(FPD) Pull-Down ...
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Typical perForMance characTerisTics IN Supply Current vs Voltage (V) IN 422812 G01 Diode Gate Voltage vs Current – 0.1V OUT ...
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LTC4228-1/LTC4228-2 Typical perForMance characTerisTics HGATE Pull-Up Current vs Temperature –11.0 –10.5 –10.0 –9.5 –9.0 –50 – TEMPERATURE (°C) 422812 G10 pin FuncTions CPO1, CPO2: Charge Pump Output. Connect a capacitor from CPO1 or CPO2 to the ...
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FuncTions INTV : Internal 5V Supply Decoupling Output. This pin CC must have a 0.1µF or larger capacitor. An external load of less than 500µA can be connected at this pin. ON1, ON2: On Control Input. A rising edge ...
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LTC4228-1/LTC4228-2 block DiagraM 65mV HGATE1 + – A1 – 12V IN1 10µA CHARGE PUMP 1 100µA CPO1 f = 2MHz GATE DRIVER 1 + DGATE1 GA1 – 12V OUT1 PG1 – +– HGATE1 + 4. SENSE1 – 1.9V ...
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The LTC4228 functions as an ideal diode with inrush cur- rent limiting and overcurrent protection by controlling two external N-channel MOSFETs (M D path. This allows boards to be safely inserted and removed in systems with a backplane powered ...
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LTC4228-1/LTC4228-2 applicaTions inForMaTion High availability systems often employ parallel-connected power supplies or battery feeds to achieve redundancy and enhance system reliability. Power ORing diodes are commonly used to connect these supplies at the point of load, but at the expense ...
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The HGATE capacitor controls the gate slew rate to limit HG the inrush current. Resistor R with C HG the current control loop, while R prevents high frequency H ...
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LTC4228-1/LTC4228-2 applicaTions inForMaTion below OUT. If the input supply falls at a more modest rate, the gate drive amplifier controls the MOSFET to maintain OUT at 25mV below IN. Board Presence Detect with high when the ...
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Active Current Loop Stability The active current loop on the HGATE pin is compensated by the parasitic gate capacitance of the external N-channel MOSFET. No further compensation components are nor- mally required. In the case when a MOSFET ...
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LTC4228-1/LTC4228-2 applicaTions inForMaTion TMR 1V/DIV I LOAD 20A/DIV HGATE 5V/DIV FAULT 10V/DIV 50ms/DIV Figure 6. Auto-Retry Sequence After a Fault Supply Undervoltage Monitor The ON pin functions as a turn-on control and an input sup- ply monitor. A resistive divider ...
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IN2 are greater than 7V, the gate drive is guaranteed to be greater than 10V. The gate drive is limited to not more than 14V. This allows the use of logic-level threshold N-channel MOSFETs and standard N-channel MOSFETs ...
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LTC4228-1/LTC4228-2 applicaTions inForMaTion The inrush current is set adding capacitance the gate of the Hot Swap MOSFET •I 1600µF • 10µA L HGATE(UP INRUSH Choose a ...
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Application In the µTCA application shown in Figure 1, the output load capacitor is required to hold up the supply to the downstream load for a short duration when all of the in- put supplies are not ...
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LTC4228-1/LTC4228-2 applicaTions inForMaTion goes high, allowing ON2 to turn on M INPUT 2 to the output. Diode D1 ensures that ON2 remains above 0.6V while in the off state so that when ON2 goes high turned on immediately ...
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V IN1 12V BULK SUPPLY BYPASS CAPACITOR C CP1 0.1µF CPO1 SENSE1 IN1 ON1 PWREN1 INTV CC C1 0.1µF GND PWREN2 ON2 CPO2 IN2 SENSE2 C CP2 0.1µF V IN2 12V BULK SUPPLY BYPASS CAPACITOR Figure 9. An ...
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LTC4228-1/LTC4228-2 applicaTions inForMaTion V IN1 12V R SNUB1 Z1 10 SMAJ13A C 0.1µF R2 137k 0.1µF 20k C1 0.1µ 20k 0.1µF R4 137k V IN2 12V Z2 R SMAJ13A 10 BACKPLANE CARD CONNECTOR CONNECTOR ...
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POWER MODULE #1 12V IN1 DGATE1 IN2 DGATE2 12V 12V IN1 DGATE1 IN2 DGATE2 12V POWER MODULE #2 12V IN1 DGATE1 IN2 DGATE2 12V 12V IN1 DGATE1 IN2 DGATE2 12V *ADDITIONAL DETAILS OMITTED FOR CLARITY Figure 13. 12V ...
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LTC4228-1/LTC4228-2 package DescripTion Please refer to http://www.linear.com/designtools/packaging/ 4.50 ± 0.05 3.10 ± 0.05 2.50 REF 2.65 ± 0.05 0.25 ±0.05 0.50 BSC RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED PIN 1 TOP ...
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DescripTion Please refer to http://www.linear.com/designtools/packaging/ .254 MIN .0165 ±.0015 RECOMMENDED SOLDER PAD LAYOUT .0075 – .0098 (0.19 – 0.25) .016 – .050 (0.406 – 1.270) NOTE: 1. CONTROLLING DIMENSION: INCHES INCHES 2. DIMENSIONS ARE IN (MILLIMETERS) 3. DRAWING NOT ...
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... Single Channel, Hot Swap Controller LTC4221 Dual Channel, Hot Swap Controller LTC4222 Dual Channel, Hot Swap Controller LTC4223 Dual Supply Hot Swap Controller LTC4224 Dual Channel, Hot Swap Controller LTC4225 Dual Ideal Diode and Hot Swap Controller Operates from 2.9V to 18V, Controls Four N-Channels, GN-24 or QFN-24 ...