LTC2923IMS#TR Linear Technology, LTC2923IMS#TR Datasheet
LTC2923IMS#TR
Specifications of LTC2923IMS#TR
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LTC2923IMS#TR Summary of contents
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... V and V Supply Tracking CORE I/O ■ Microprocessor, DSP and FPGA Supplies ■ Servers ■ Communication Systems , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Patents Pending. U TYPICAL APPLICATIO 3.3V 3.3V 10nF 138k ...
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LTC2923 ABSOLUTE AXI U RATI GS Supply Voltage (V ) ................................ – 0.3V to 10V CC Input Voltages ON ........................................................ – 0.3V to 10V TRACK1, TRACK2 ...................... – 0. RAMP ........................................... – 0. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER V ON Pin Fault Clear Threshold Voltage ON(FC Pin Input Current ON FET Drain-Source Overcurrent Voltage Threshold ∆V DS(TH) (V – RAMP I RAMP ...
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LTC2923 W U TYPICAL PERFOR A CE CHARACTERISTICS Specifications are 25°C unless otherwise noted Fast Pull-Down GATE vs Temperature 5. 2. ...
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CTIO S MS/DE Packages V (Pin 1): Positive Supply Input Pin. The operating CC supply input range is 2.9V to 5.5V. An undervoltage lockout circuit resets the part when the supply is below 2.5V. V ...
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LTC2923 CTIO AL BLOCK DIAGRA ON 2 1.2V 0.4V STATUS 10 SDO 9 RAMPBUF 5 TRACK1 3 TRACK2 4 PIN NUMBERS IN PARENTHESES CORRESPOND TO THE 10-LEAD MSOP PACKAGE – SHORT-CIRCUIT ...
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U U APPLICATIO S I FOR ATIO Power Supply Tracking and Sequencing The LTC2923 handles a variety of power-up profiles to satisfy the requirements of digital logic circuits including FPGAs, PLDs, DSPs and microprocessors. These require- ments fall into one ...
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LTC2923 U U APPLICATIO S I FOR ATIO Tracking Cell The LTC2923’s operation is based on the tracking cell shown in Figure 5, which uses a proprietary wide-range current mirror. The tracking cell shown in Figure 5 servos the TRACK ...
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U U APPLICATIO S I FOR ATIO R ONB ON R ONA 1.2V RAMPBUF R TB1 TRACK1 R TA1 R TB2 TRACK2 R TA2 The LTC2923 features an electronic circuit breaker func- tion that protects the optional series FET against ...
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LTC2923 U U APPLICATIO S I FOR ATIO Shutdown Output In some applications it might be necessary to control the shutdown or RUN/SS pins of the slave supplies using the 12-lead LTC2923CDE or LTC2923IDE. The LTC2923 may not be able ...
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U U APPLICATIO S I FOR ATIO 3-Step Design Procedure The following 3-step procedure allows one to complete a design for any of the tracking or sequencing profiles shown in Figures basic three supply application circuit ...
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LTC2923 U U APPLICATIO S I FOR ATIO Coincident Tracking Example 1V/DIV A typical three supply application is shown in Figure 11. The master signal is a 3.3V module. The slave 1 supply is a 1.8V switching power supply and ...
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U U APPLICATIO S I FOR ATIO Ratiometric Tracking Example 1V/DIV This example converts the coincident tracking example to the ratiometric tracking profile shown in Figure 12, using two supplies without an external FET. The ramp rate of the master ...
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LTC2923 U U APPLICATIO S I FOR ATIO Offset Tracking Example 1V/DIV Converting the circuit in the coincident tracking example to the offset tracking shown in Figure 14 is relatively simple. Here the 1.8V slave 1 supply ramps up 1V ...
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U U APPLICATIO S I FOR ATIO Supply Sequencing Example 1V/DIV In Figure 16, the slave 1 supply and the slave 2 supply are sequenced instead of tracking. The 3.3V supply ramps up at 100V/s with an external FET and ...
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LTC2923 U U APPLICATIO S I FOR ATIO Final Sanity Checks The collection of equations below is useful for identifying unrealizable solutions. As stated in step 2, the slave supply must finish ramping before the master signal has reached its ...
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U U APPLICATIO S I FOR ATIO MASTER SLAVE2 SLAVE1 1ms/DIV Figure 18. Weak Resistive Load 1V/DIV 1ms/DIV Figure 19. Power Supply Start-Ups Delayed 1V/DIV 1ms/DIV Figure 20. ON Pin Delayed W U Layout Considerations Be sure to place a ...
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LTC2923 PACKAGE DESCRIPTIO 5.23 (.206) MIN 0.305 ± 0.038 (.0120 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 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 Package 12-Lead Plastic DFN (4mm × ...
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... Dual Supply Hot Swap Controller LTC4230 Triple Hot Swap Controller with Multifunction Current Control LTC4253 – 48V Hot Swap Controller and Supply Sequencer Hot Swap is a trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...