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| DICE/DWF SPECIFICATION LTC1629-PG Polyphase, High Efficiency, Synchronous Step-Down Switching Regulator 3 4 5 6 7 8 25 24 23 22 21 21 9 20 19 18 2 1 28 27 26 DIE CROSS REFERENCE LTC Finished Part Number LTC1629-PG LTC1629-PG Order DICE CANDIDATE Part Number Below LTC1629-PG DICE LTC1629-PG DWF PAD FUNCTION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. RUN/SS SENSE1+ SENSE1- EAIN PLLFLTR PLLIN PHASMD ITH SGND VDIFFOUT VOS- VOS+ SENSE2- SENSE2+ 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. PGOOD TG2 SW2 BOOST2 BG2 PGND INTVCC EXTVCC BG1 VIN BOOST1 SW1 TG1 CLKOUT 10 11 12 13 14 15 16 17 100 x 120 mils DICE ELECTRICAL TEST LI ITS SYMBOL VEAIN VSENSEMAX IINEAIN VLOADREG PARAMETER Regulated Feedback Voltage Maximum Current Sense Threshold Feedback Current Output Voltage Load Regulation Main Control Loop VREFLNREG VOVL UVLO IQ IRUN/SS Reference Voltage Line Regulation Output Overvoltage Threshold Undervoltage Lockout Input DC Supply Current Shutdown Soft-Start Charge Current 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. W TA = 25C. VIN = 15V, VRUN/SS = 5V unless otherwise noted. MIN 0.792 65 MAX 0.808 85 - 50 0.5 - 0.5 0.02 0.84 3 - 0.5 0.88 4 40 UNITS V mV nA % % %/V V V A A CONDITIONS (Note 1); ITH Voltage = 1.2V VSENSE1, 2 = 5V; (Note 1) (Note 1) Measured in Servo Loop; ITH Voltage = 0.7V Measured in Servo Loop; ITH Voltage = 2V VIN = 3.6V to 30V (Note 1) Measured at VEAIN VIN Ramping Down (Note 4); VRUN/SS = 0V VRUN/SS = 1.9V 1 DICE/DFN SPECIFICATION LTC1629-PG DICE ELECTRICAL TEST LI ITS SYMBOL VRUN/SS VRUN/SSLO ISCL ISDLDO ISENSE DFMAX TG1, 2 tr TG1, 2 tf BG1, 2 tr BG1, 2 tf VINTVCC VLDO INT VLDO EXT VEXTVCC fNOM fLOW fHIGH RRELPHS CLKOUT PARAMETER RUN/SS Pin ON Threshold RUN/SS Pin Latchoff Arming RUN/SS Discharge Current Shutdown Latch Disable Current Total Sense Pins Source Current Maximum Duty Factor Top Gate Transition Time: Rise Time Fall Time Bottom Gate Transition Time: Rise Time Fall Time Internal VCC Voltage INTVCC Load Regulation EXTVCC Voltage Drop EXTVCC Switchover Voltage Nominal Frequency Lowest Frequency Highest Frequency Controller 2-Controller 1 Phase Phase (Relative to Controller 1) Internal VCC Regulator 6V < VIN < 30V; VEXTVCC = 4V ICC = 0 to 20mA; VEXTVCC = 4V ICC = 20mA; VEXTVCC = 5V; ICC = 20mA, EXTVCC Ramping Positive VPLLFLTR = 1.2V VPLLFLTR = 0V VPLLFLTR 2.4V VPHASMD = 0V, Open VPHASMD = 5V VPHASMD = 0V VPHASMD = Open VPHASMD = 5V 4 0.2 Differential Amp Mode Differential Amp Mode; 0V < VCM < 5V IPGOOD = 2mA VPGOOD = 5V VEAIN with Respect to Set Output Voltage VEAIN Ramping Negative VEAIN Ramping Positive -6 6 0.995 46 0.3 1 -9.5 9.5 1.005 4.5 190 120 280 180 240 60 90 120 250 160 360 4.8 5.2 1.0 240 V % mV V kHz kHz kHz Deg Deg Deg Deg Deg V V V/V dB V A % % Oscillator and Phase-Locked Loop CLKHIGH CLKLOW ADA CMRRDA VPGL IPGOOD VPG Clock High Output Voltage Clock Low Output Voltage Gain Common Mode Rejection Ratio PGOOD Voltage Low PGOOD Leakage Current PGOOD Trip Level, Either Controller Differential Amplifier/Op Amp Gain Block PGOOD Output Note 1: The LTC1629-PG is tested in a feedback loop that servos VITH to a specified voltage and measures the resultant VEAIN. Wafer level testing is performed per the indicated specifications for dice. Considerable differences in performance can often be observed for dice versus packaged units due to the influences of packaging and assembly on certain devices and/or parameters. Please consult factory for more information on dice performance and lot qualifications via lot sampling test procedures. Dice data sheet subject to change. Please consult factory for current revision in production. I.D.No. 66-13-1351 2 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 W TA = 25C. VIN = 15V, VRUN/SS = 5V unless otherwise noted. MIN 1.0 0.5 - 85 98 90 90 90 90 MAX 1.9 4.5 4 5 UNITS V V A A A % ns ns ns ns CONDITIONS VRUN/SS Rising VRUN/SS Rising from 3V Soft Short Condition VEAIN = 0.5V; VRUN/SS = 4.5V VEAIN = 0.5V Each Channel; VSENSE1 -, 2 - = VSENSE1 +, 2 + = 0V In Dropout CLOAD = 3300pF CLOAD = 3300pF CLOAD = 3300pF CLOAD = 3300pF LT/LT 0405 PRINTED IN USA www.linear.com (c) LINEAR TECHNOLOGY CORPORATION 2005 |
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