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Manufacturer Part Number Manufacturer Series Packaging Output Type Function Output Configuration Topology Number of Outputs Frequency Switching Operating Temperature Package Case Supplier Device Package Output Phases Voltage Supply VccVdd Duty Cycle Max Synchronous Rectifier Clock Sync Serial Interfaces Control Features Lifecycle
Lifecycle
1724426 XRP7704ILBTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 4 300kHz ~ 1.5MHz -40°C ~ 125°C (TJ) 40-WFQFN Exposed Pad 40-TQFN (6x6) 4 6.5 V ~ 20 V 85% Yes No I²C Enable Active
1724665 XRP7704ILB-F Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 4 300kHz ~ 1.5MHz -40°C ~ 125°C (TJ) 40-WFQFN Exposed Pad 40-TQFN (6x6) 4 6.5 V ~ 20 V 85% Yes No I²C Enable Active
1724694 XR77128ELBTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 4 105kHz ~ 1.23MHz -40°C ~ 125°C (TJ) 44-WFQFN Exposed Pad 44-TQFN (7x7) 1 5.5 V ~ 25 V - Yes No I²C, SMBus Enable Last Time Buy
1724743 XR77128ELBMTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 4 105kHz ~ 1.23MHz -40°C ~ 125°C (TJ) 44-WFQFN Exposed Pad 44-TQFN (7x7) 1 5.5 V ~ 25 V - Yes No I²C, SMBus Enable Last Time Buy
1724757 XR77129ELBTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 4 105kHz ~ 1.23MHz -40°C ~ 125°C (TJ) 44-WFQFN Exposed Pad 44-TQFN (7x7) 1 6 V ~ 40 V - Yes No I²C, SMBus Enable Last Time Buy
1724779 XR77129ELBMTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 4 105kHz ~ 1.23MHz -40°C ~ 125°C (TJ) 44-WFQFN Exposed Pad 44-TQFN (7x7) 1 6 V ~ 40 V - Yes No I²C, SMBus Enable Active
1725317 XRP6124HVES0.5-F Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 1 100kHz ~ 1MHz -40°C ~ 125°C (TJ) SC-74A, SOT-753 SOT-23-5 1 4.5 V ~ 30 V - No No - Enable Last Time Buy
1725435 XRP6124ESTR0.5-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 200kHz ~ 833kHz -40°C ~ 125°C (TJ) SC-74A, SOT-753 SOT-23-5 1 3 V ~ 18 V - No No - Enable Active
1727429 SP6128AEY-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 14-TSSOP (0.173", 4.40mm Width) 14-TSSOP 1 3 V ~ 5.5 V 90% Yes No - Current Limit Last Time Buy
1727728 XR75100ELMTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 - -40°C ~ 125°C (TJ) 16-VFQFN Exposed Pad 16-QFN (3x3) 1 5.5 V ~ 40 V - Yes No - Current Limit, Enable, On Time Control, Power Good, Soft Start Active
1727729 XR71211EHMTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 100kHz ~ 800kHz -40°C ~ 125°C (TJ) 10-VFDFN Exposed Pad 10-DFN (3x3) 1 5.5 V ~ 40 V - Yes No - Current Limit, Enable, On Time Control, Power Good, Soft Start Last Time Buy
1727870 XR71211EH-F Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 100kHz ~ 800kHz -40°C ~ 125°C (TJ) 10-VFDFN Exposed Pad 10-DFN (3x3) 1 5.5 V ~ 40 V - Yes No - Current Limit, Enable, On Time Control, Power Good, Soft Start Last Time Buy
1728368 SP6133ER1-L/MTR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 16-VFQFN Exposed Pad 16-QFN (3x3) 1 5 V ~ 24 V 100% Yes No - Enable, Power Good, Soft Start Discontinued
1728628 XR77129ELB-F Exar Corporation - Tray Transistor Driver Step-Down Positive Buck 4 105kHz ~ 1.23MHz -40°C ~ 125°C (TJ) 44-WFQFN Exposed Pad 44-TQFN (7x7) 1 6 V ~ 40 V - Yes No I²C, SMBus Enable Active
1729486 SP6123ACN-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 500kHz 0°C ~ 70°C (TA) 8-SOIC (0.154", 3.90mm Width) 8-SOIC 1 3 V ~ 5.5 V 93% Yes No - - Last Time Buy
1729487 SP6123CN-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz 0°C ~ 70°C (TA) 8-SOIC (0.154", 3.90mm Width) 8-SOIC 1 3 V ~ 5.5 V 93% Yes No - - Active
1729488 SP6134HEU-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 600kHz -40°C ~ 85°C (TA) 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-MSOP 1 3 V ~ 28 V 100% Yes No - Soft Start Active
1729564 SP6132HEU-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-MSOP 1 3 V ~ 28 V 100% Yes No - Soft Start Active
1729737 SP6133ER1-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 16-VFQFN Exposed Pad 16-QFN (3x3) 1 5 V ~ 24 V 100% Yes No - Enable, Power Good, Soft Start Active
1729739 XRP6124HVESTR0.5-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 100kHz ~ 1MHz -40°C ~ 125°C (TJ) SC-74A, SOT-753 SOT-23-5 1 4.5 V ~ 30 V - No No - Enable Active
1729763 SP6136ER1-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 600kHz -40°C ~ 85°C (TA) 16-VFQFN Exposed Pad 16-QFN (3x3) 1 5 V ~ 24 V 100% Yes No - Enable, Power Good, Soft Start Last Time Buy
1729801 SP6128AEY-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 14-TSSOP (0.173", 4.40mm Width) 14-TSSOP 1 3 V ~ 5.5 V 90% Yes No - Current Limit Active
1729802 SP6128AHY-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 105°C (TA) 14-TSSOP (0.173", 4.40mm Width) 14-TSSOP 1 3 V ~ 5.5 V 90% Yes No - Current Limit Last Time Buy
1730360 XR77128ELB-F Exar Corporation - Tray Transistor Driver Step-Down Positive Buck 4 105kHz ~ 1.23MHz -40°C ~ 125°C (TJ) 44-WFQFN Exposed Pad 44-TQFN (7x7) 1 5.5 V ~ 25 V - Yes No I²C, SMBus Enable Active
1731397 XR75100ELTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 - -40°C ~ 125°C (TJ) 16-VFQFN Exposed Pad 16-QFN (3x3) 1 5.5 V ~ 40 V - Yes No - Current Limit, Enable, On Time Control, Power Good, Soft Start Active
1731398 XR71211EHTR-F Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 100kHz ~ 800kHz -40°C ~ 125°C (TJ) 10-VFDFN Exposed Pad 10-DFN (3x3) 1 5.5 V ~ 40 V - Yes No - Current Limit, Enable, On Time Control, Power Good, Soft Start Last Time Buy
1732493 SP6126EK1-L Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 1 600kHz -40°C ~ 125°C (TJ) SOT-23-6 Thin, TSOT-23-6 6-TSOT 1 4.5 V ~ 29 V 100% No No - - Obsolete
1732495 SP6120BEY-L Exar Corporation AnyFET™ Tube Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 16-TSSOP (0.173", 4.40mm Width) 16-TSSOP 1 3 V ~ 5.5 V 95% Yes No - Enable, Frequency Control, Soft Start Obsolete
1732496 SP6120BEY-L/TR Exar Corporation AnyFET™ Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 16-TSSOP (0.173", 4.40mm Width) 16-TSSOP 1 3 V ~ 5.5 V 95% Yes No - Enable, Frequency Control, Soft Start Obsolete
1732497 SP6120EY-L Exar Corporation AnyFET™ Tube Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 16-TSSOP (0.173", 4.40mm Width) 16-TSSOP 1 3 V ~ 5.5 V 95% Yes No - Enable, Frequency Control, Soft Start Obsolete
1732498 SP6120EY-L/TR Exar Corporation AnyFET™ Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 16-TSSOP (0.173", 4.40mm Width) 16-TSSOP 1 3 V ~ 5.5 V 95% Yes No - Enable, Frequency Control, Soft Start Obsolete
1732499 SP6121CN-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 500kHz 0°C ~ 70°C (TA) 8-SOIC (0.154", 3.90mm Width) 8-SOIC 1 3 V ~ 5.5 V 100% Yes No - Current Limit Obsolete
1732500 SP6121CN-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 500kHz 0°C ~ 70°C (TA) 8-SOIC (0.154", 3.90mm Width) 8-SOIC 1 3 V ~ 5.5 V 100% Yes No - Current Limit Obsolete
1732501 SP6123ACN-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 500kHz 0°C ~ 70°C (TA) 8-SOIC (0.154", 3.90mm Width) 8-SOIC 1 3 V ~ 5.5 V 93% Yes No - - Discontinued
1732502 SP6123CN-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 300kHz 0°C ~ 70°C (TA) 8-SOIC (0.154", 3.90mm Width) 8-SOIC 1 3 V ~ 5.5 V 93% Yes No - - Discontinued
1732503 SP6125EK1-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 125°C (TJ) SOT-23-6 Thin, TSOT-23-6 6-TSOT 1 4.5 V ~ 29 V 100% No No - - Obsolete
1732504 SP6126EK1-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 600kHz -40°C ~ 125°C (TJ) SOT-23-6 Thin, TSOT-23-6 6-TSOT 1 4.5 V ~ 29 V 100% No No - - Obsolete
1732505 SP6127EK1-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 900kHz -40°C ~ 125°C (TJ) SOT-23-6 Thin, TSOT-23-6 6-TSOT 1 4.5 V ~ 29 V 100% No No - - Obsolete
1732506 SP6128AHY-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 105°C (TA) 14-TSSOP (0.173", 4.40mm Width) 14-TSSOP 1 3 V ~ 5.5 V 90% Yes No - Current Limit Discontinued
1732507 SP6128ASEY-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 14-TSSOP (0.173", 4.40mm Width) 14-TSSOP 1 3 V ~ 5.5 V 90% Yes No - Current Limit Obsolete
1732508 SP6128ASEY-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 14-TSSOP (0.173", 4.40mm Width) 14-TSSOP 1 3 V ~ 5.5 V 90% Yes No - Current Limit Obsolete
1732509 SP6132HEU-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-MSOP 1 3 V ~ 28 V 100% Yes No - Soft Start Discontinued
1732510 SP6134HEU-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 600kHz -40°C ~ 85°C (TA) 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-MSOP 1 3 V ~ 28 V 100% Yes No - Soft Start Discontinued
1732511 SP6137EU-L Exar Corporation - Tube Transistor Driver Step-Down Positive Buck 1 900kHz -40°C ~ 85°C (TA) 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-MSOP 1 2.5 V ~ 20 V 100% Yes No - Soft Start Obsolete
1732512 SP6137EU-L/TR Exar Corporation - Tape & Reel (TR) Transistor Driver Step-Down Positive Buck 1 900kHz -40°C ~ 85°C (TA) 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 10-MSOP 1 2.5 V ~ 20 V 100% Yes No - Soft Start Obsolete
1732565 SP6136ER1-L Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 1 600kHz -40°C ~ 85°C (TA) 16-VFQFN Exposed Pad 16-QFN (3x3) 1 5 V ~ 24 V 100% Yes No - Enable, Power Good, Soft Start Discontinued
1732566 SP6133ER1-L Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 85°C (TA) 16-VFQFN Exposed Pad 16-QFN (3x3) 1 5 V ~ 24 V 100% Yes No - Enable, Power Good, Soft Start Discontinued
1732567 SP6127EK1-L Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 1 900kHz -40°C ~ 125°C (TJ) SOT-23-6 Thin, TSOT-23-6 6-TSOT 1 4.5 V ~ 29 V 100% No No - - Obsolete
1732568 SP6125EK1-L Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 1 300kHz -40°C ~ 125°C (TJ) SOT-23-6 Thin, TSOT-23-6 6-TSOT 1 4.5 V ~ 29 V 100% No No - - Obsolete
1733232 XRP6124ES0.5-F Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 1 200kHz ~ 833kHz -40°C ~ 125°C (TJ) SC-74A, SOT-753 SOT-23-5 1 3 V ~ 18 V - No No - Enable Last Time Buy
1733439 XR75100EL-F Exar Corporation - Bulk Transistor Driver Step-Down Positive Buck 1 - -40°C ~ 125°C (TJ) 16-VFQFN Exposed Pad 16-QFN (3x3) 1 5.5 V ~ 40 V - Yes No - Current Limit, Enable, On Time Control, Power Good, Soft Start Active

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