ltc2927its8-trpbf Linear Technology Corporation, ltc2927its8-trpbf Datasheet
ltc2927its8-trpbf
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ltc2927its8-trpbf Summary of contents
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... FB node. Furthermore, it presents a high impedance when power-up is complete, effectively removing it from the DC/DC circuit. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Patents Pending. Track-Up and Track-Down Waveforms 0.1µF V 0.1µ ...
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... Storage Temperature Range ................... –65°C to 150°C Lead Temperature (Soldering, 10 sec) .................. 300° SDO FB GND ORDER PART NUMBER LBQH LTC2927CTS8 LBQH LTC2927ITS8 The denotes the specifications which apply over the full operating ● = 25°C. 2.9V < V < 5.5V unless otherwise noted (Note 2 CONDITIONS I = 0mA 0mA FB ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER I RAMP Pin Input Current RAMP V RAMPBUF Output Low Voltage RAMPBUF(OL) V RAMPBUF Output High Voltage, RAMPBUF(OH – V RAMPBUF(OH) CC RAMPBUF V Ramp Buffer ...
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LTC2927 TYPICAL PERFOR A CE CHARACTERISTICS Temperature ON(TH) 1.240 1.235 1.230 1.225 1.220 1.215 1.210 –50 – TEMPERATURE (°C) 2927 G04 MAX TRACK TRACK ...
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PI FU CTIO TSOT/DFN Packages GND (Pin 4/Pin 5): Device Ground. TRACK (Pin 5/Pin 4): Tracking Control Input. A resistive voltage divider between RAMPBUF and TRACK determines the tracking profile of the slave supply. TRACK servos ...
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LTC2927 APPLICATIO S I FOR ATIO U U Power Supply Tracking and Sequencing The LTC2927 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 ...
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APPLICATIO S I FOR ATIO U U pin is mirrored at the FB pin to establish a voltage at the output of the slave supply. The slave output voltage varies with the master signal, enabling the slave supply to be ...
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LTC2927 APPLICATIO S I FOR ATIO U U EARLY V IN 3.3V 0.1µF R ONB 138k RAMP C R RAMP ONA 10pF 100k LTC2927 SDO RUN/SS RAMPBUF 1.235V TB 16.5k TRACK R R ...
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APPLICATIO S I FOR ATIO U U Coincident Tracking Example 1V/DIV A typical application is shown in Figure 10. The master signal is a 3.3V ramp generated by the LTC2927. The slave 1 supply is a 1.8V switching power supply ...
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LTC2927 APPLICATIO S I FOR ATIO U U Ratiometric Tracking Example 1V/DIV 10ms/DIV This example converts the coincident tracking example to the ratiometric tracking profile shown in Figure 11. The ramp rate of the master signal remains unchanged (Step 1) ...
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APPLICATIO S I FOR ATIO U U Offset Tracking Example 1V/DIV 10ms/DIV Converting the circuit in the coincident tracking example to the offset tracking shown in Figure 13 is relatively simple. Here the 1.8V slave 1 supply ramps up 1V ...
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LTC2927 APPLICATIO S I FOR ATIO U U Supply Sequencing Example 1V/DIV 10ms/DIV In Figure 15, the slave 1 supply and the slave 2 supply are sequenced instead of tracking. The 3.3V master ramps up at 100V/s. The 1.8V slave ...
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APPLICATIO S I FOR ATIO U U 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 final ...
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LTC2927 APPLICATIO S I FOR ATIO U U Start-Up Delays Often power supplies do not start-up immediately when their input supplies are applied. If the LTC2927 tries to ramp-up these power supplies as soon as the input sup- ply is ...
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... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U DDB Package 8-Lead Plastic DFN (3mm × ...
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... Dual 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. 16 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...