SEPIC Regulators
Analog Devices manufacturers a broad range of monolithic boost switching regulators and controllers that can be configured as SEPICs (single-ended primary inductor converters), along with other topologies, enabling universal use in a wide variety of applications. These SEPIC converters maintain a fixed output voltage regardless of whether the input voltage is above or below the input. These converters offer wide input voltage ranges, external synchronization, and, on some models, internal Schottky diodes. Other features include programmable current limit, burst-mode operation, and low battery detect.
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Application Notes
- AN118 - High Voltage, Low Noise, DC/DC Converters PDF
- AN29 - Some Thoughts on DC-DC Converters PDF
- AN44 - LT1074/LT1076 Design Manual PDF
- AN61 - Practical Circuitry for Measurement and Control Problems PDF
- AN65 - A Fourth Generation of LCD Backlight Technology PDF
Design Notes
- High Efficiency Synchronous SEPIC for Automotive and Industrial Installations
- SEPIC, Boost, Inverting, and Flyback Controller Solves the Voltage Drop Problem of High Impedance, Long Length Industrial Power Lines
- High Voltage LTC3892 Family of Controllers Reduces DC-to-DC Converter Cost and Size
- DN273 - Fiber Optic Communication Systems Benefit from Tiny, Low Noise Avalanche Photodiode Bias Supply PDF
- DN357 - Tiny, Highly Flexible, Dual Boost/Inverter Tracks Supplies PDF
Product Selector Card
Technical Articles Page
- Minimizing Emissions of a SEPIC Converter
- Design Once; Use Twice: Monolithic SEPIC/Boost Regulators with Wide VIN Range Satisfy Requirements of Both Consumer and Commercial Vehicles
- LT3759 Wide Vin, 48V @ >100mA Output Boost Converter that Works Down to 1.6V
- How NOT to Damage Your Switching Regulator Demo Board
- Differences Between the Ćuk Converter and the Inverting Charge Pump Converter
Videos
- Simplify your high voltage DC/DC converters to save battery life
- 80V Synchronous SEPIC/Inverting/Boost Controller IC with 3 Regulation Loops
- High-Power Boost/SEPIC/Inverting DC/DC Converters with Fault Protection
- LT3757 2.9V to 40V Boost, SEPIC, Flyback or Inverting Controller
- LT8709 Video Product Brief
SEPIC Regulators
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Switch Current (typ) (A) | Vout Max (typ) (V) | Monolithic | Isupply (typ) (A) | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | LT8365 | 1 | 2.8 | 60 | 2 | 150 | Yes | 9µ | $2.18 (LT8365EMSE#PBF) |
| 2 | LTC7840 | 2 | 5.5 | 60 | 60 | 60 | No | 3m | $3.20 (LTC7840EFE#PBF) |
| 3 | LT8361 | 1 | 2.8 | 60 | 2 | 100 | Yes | 22µ | $2.06 (LT8361EMSE#PBF) |
| 4 | LT8711 | 1 | 4.5 | 42 | 20 | 42 | No | 15µ | $2.30 (LT8711EUDC#PBF) |
| 5 | LT8362 | 1 | 2.8 | 60 | 2.5 | 60 | Yes | 22µ | $1.85 (LT8362EDD#PBF) |
| 6 | LTC1871X | 1 | 2.5 | 36 | 20 | 72 | No | 250µ | $125.00 (LTC1871XMS#PBF) |
| 7 | LT8603 | 4 | 3 | 42 | 4 | 41.58 | Yes | 28µ | $3.63 (LT8603JUJ#PBF) |
| 8 | LT8364 | 1 | 2.8 | 60 | 5 | 60 | Yes | 9µ | $2.06 (LT8364EDE#PBF) |
| 9 | LTM8049 | 2 | 2.6 | 20 | 1.25 | 24 | Yes | 10m | $14.20 (LTM8049EY#PBF) |
| 10 | LT8335 | 1 | 3 | 25 | 2.5 | 28 | Yes | 5.5µ | $2.50 (LT8335EDDB#TRPBF) |
| 11 | LT8331 | 1 | 4.5 | 100 | 600m | 140 | Yes | 5.5µ | $2.95 (LT8331EMSE#PBF) |
| 12 | LT8494 | 1 | 1 | 32 | 2.55 | 70 | Yes | 3µ | $2.85 (LT8494EFE#PBF) |
| 13 | LT8330 | 1 | 3 | 40 | 1.2 | 60 | Yes | 5.5µ | $2.50 (LT8330EDDB#TRPBF) |
| 14 | LT8570-1 | 1 | 2.55 | 40 | 375m | 65 | Yes | 1.2m | $2.25 (LT8570EMS8E-1#PBF) |
| 15 | LT8570 | 1 | 2.55 | 40 | 750m | 65 | Yes | 1.2m | $2.25 (LT8570EDD#PBF) |
| 16 | LT8495 | 1 | 1 | 60 | 2.55 | 70 | Yes | 9µ | $2.95 (LT8495EFE#PBF) |
| 17 | LT8709 | 1 | -80 | -4.5 | 25 | 80 | No | 4m | $3.65 (LT8709EFE#PBF) |
| 18 | LT8580 | 1 | 2.5 | 40 | 1.5 | 65 | Yes | 1.2m | $2.35 (LT8580EDD#PBF) |
| 19 | LTC3872-1 | 1 | 2.75 | 9.8 | 10 | 60 | No | 250µ | $1.80 (LTC3872EDDB-1#TRPBF) |
| 20 | LT8710 | 1 | 4.5 | 80 | 25 | 80 | No | 4m | $3.41 (LT8710EFE#PBF) |
| 21 | LT8471 | 2 | 2.6 | 50 | 2.55 | 50 | Yes | 2.4m | $3.75 (LT8471EFE#PBF) |
| 22 | LTM8045 | 1 | 2.8 | 18 | 1.26 | 15 | Yes | 10m | $6.97 (LTM8045EY#PBF) |
| 23 | LT3959 | 1 | 1.6 | 40 | 7 | 40 | Yes | 350µ | $3.05 (LT3959EUHE#PBF) |
| 24 | LTC3862-2 | 1 | 5.5 | 36 | 60 | 350 | No | 1.8m | $3.29 (LTC3862EGN-2#PBF) |
| 25 | LT3957A | 1 | 3 | 40 | 5.9 | 40 | Yes | 1.7m | $2.95 (LT3957AEUHE#PBF) |
| 26 | LT8582 | 2 | 2.5 | 22 | 4.3 | 42 | Yes | 2.1m | $3.75 (LT8582EDKD#PBF) |
| 27 | LT3759 | 1 | 1.6 | 42 | 25 | 42 | No | 350µ | $2.35 (LT3759EMSE#PBF) |
| 28 | LT3958 | 1 | 5 | 80 | 4 | 80 | Yes | 1.6m | $3.05 (LT3958EUHE#PBF) |
| 29 | LT3581 | 1 | 2.3 | 22 | 4.3 | 42 | Yes | 1.9m | $2.45 (LT3581EDE#PBF) |
| 30 | LT3579-1 | 1 | 2.5 | 16 | 7.5 | 42 | Yes | 1.9m | $3.30 (LT3579EUFD-1#PBF) |
| 31 | LT3579 | 1 | 2.5 | 16 | 7.5 | 42 | Yes | 1.9m | $3.30 (LT3579EUFD#PBF) |
| 32 | LT3758A | 1 | 5.5 | 100 | 25 | 350 | No | 1.6m | $2.35 (LT3758AEDD#PBF) |
| 33 | ADP1613 | 1 | 2.5 | 5.5 | 2 | 20 | Yes | 1.35m | $0.72 (ADP1613ARMZ-R7) |
| 34 | ADP1612 | 1 | 1.8 | 5.5 | 1.4 | 20 | Yes | 1.35m | $0.80 (ADP1612ARMZ-R7) |
| 35 | LT3757A | 1 | 2.9 | 40 | 25 | 350 | No | 1.6m | $2.06 (LT3757AEDD#PBF) |
| 36 | LTC3862-1 | 1 | 8.5 | 36 | 60 | 350 | No | 1.8m | $3.29 (LTC3862EGN-1#PBF) |
| 37 | LTC3862 | 1 | 4 | 36 | 60 | 60 | No | 1.8m | $3.29 (LTC3862EGN#PBF) |
| 38 | LT3495-1 | 1 | 2.2 | 16 | 350m | 40 | Yes | 60µ | $1.75 (LT3495EDDB-1#TRPBF) |
| 39 | LT3495 | 1 | 2.2 | 16 | 650m | 40 | Yes | 60µ | $1.75 (LT3495BEDDB#TRPBF) |
| 40 | LTC3805-5 | 1 | 4.5 | 75 | 10 | 75 | No | 360µ | $1.39 (LTC3805EDD-5#PBF) |
| 41 | LT3580 | 1 | 2.5 | 32 | 2.5 | 42 | Yes | 1m | $2.00 (LT3580EDD#PBF) |
| 42 | LTC3873-5 | 1 | 4 | 75 | 10 | 60 | No | 300µ | $1.25 (LTC3873EDDB-5#TRPBF) |
| 43 | LTC3873 | 1 | 8.8 | 75 | 10 | 60 | No | 300µ | $1.25 (LTC3873EDDB#TRPBF) |
| 44 | LTC1871-1 | 1 | 2.5 | 36 | 20 | 72 | No | 250µ | $2.65 (LTC1871EMS-1#PBF) |
| 45 | LTC3872 | 1 | 2.75 | 9.8 | 10 | 60 | No | 250µ | $1.80 (LTC3872EDDB#TRPBF) |
| 46 | LT3844 | 1 | 4 | 60 | 5 | 36 | No | 120µ | $3.10 (LT3844EFE#PBF) |
| 47 | LT3489 | 1 | 2.4 | 16 | 3.5 | 40 | Yes | 2m | $1.95 (LT3489EMS8E#PBF) |
| 48 | LTC3805 | 1 | 8.8 | 75 | 10 | 75 | No | 360µ | $1.39 (LTC3805EDD#PBF) |
| 49 | LTC3783 | 1 | 3 | 36 | 25 | 100 | No | 1.5m | $2.85 (LTC3783EDHD#PBF) |
| 50 | LT3477 | 1 | 2.3 | 25 | 4 | 40 | Yes | 5m | $3.15 (LT3477EUF#PBF) |
| 51 | LT3724 | 1 | 4 | 60 | 5 | 36 | No | 1.7m | $3.10 (LT3724EFE#PBF) |
| 52 | LT3479 | 1 | 2.3 | 24 | 4.5 | 42 | Yes | 5m | $3.00 (LT3479EDE#PBF) |
| 53 | LT3472 | 2 | 2.2 | 16 | 400m | 34 | Yes | 2.8m | $1.95 (LT3472EDD#PBF) |
| 54 | LT3471 | 2 | 2.4 | 16 | 2.05 | 40 | Yes | 2.4m | $2.80 (LT3471EDD#PBF) |
| 55 | LT1935 | 1 | 2.1 | 16 | 3.2 | 38 | Yes | 3m | $2.50 (LT1935ES5#TRPBF) |
| 56 | LT1941 | 3 | 3.3 | 25 | 4.3 | 35.2 | Yes | 2m | $5.25 (LT1941EFE#PBF) |
| 57 | LT3463A | 2 | 2.2 | 15 | 250m | 40 | Yes | 40µ | $1.95 (LT3463AEDD#PBF) |
| 58 | LT3463 | 2 | 2.2 | 15 | 250m | 40 | Yes | 40µ | $1.95 (LT3463EDD#PBF) |
| 59 | LT3461A | 1 | 2.5 | 16 | 420m | 38 | Yes | 2.8m | $1.71 (LT3461AES6#TRPBF) |
| 60 | LT3436 | 1 | 3 | 25 | 4 | 34 | Yes | 900µ | $2.75 (LT3436EFE#PBF) |
| 61 | LT3467A | 1 | 2.2 | 16 | 1.1 | 40 | Yes | 1.2m | $1.81 (LT3467AEDDB#TRPBF) |
| 62 | LT3467 | 1 | 2.2 | 16 | 1.1 | 40 | Yes | 1.2m | $1.81 (LT3467EDDB#TRPBF) |
| 63 | LT3461 | 1 | 2.5 | 16 | 420m | 38 | Yes | 2.8m | $1.71 (LT3461ES6#TRPBF) |
| 64 | LT3460 | 1 | 2.5 | 16 | 420m | 36 | Yes | 2m | $1.56 (LT3460ES5#TRPBF) |
| 65 | LTC1871-7 | 1 | 2.5 | 36 | 20 | 36 | No | 550µ | $2.65 (LTC1871EMS-7#PBF) |
| 66 | LT1961 | 1 | 3 | 25 | 2 | 35 | Yes | 900µ | $1.69 (LT1961EMS8E#PBF) |
| 67 | LT3464 | 1 | 2 | 10 | 80m | 34 | Yes | 25µ | $1.56 (LT3464ETS8#TRPBF) |
| 68 | LTC1872B | 1 | 2.5 | 9.8 | 20 | 36 | No | 270µ | $1.85 (LTC1872BES6#TRPBF) |
| 69 | LTC1871 | 1 | 2.5 | 36 | 20 | 72 | No | 250µ | $2.65 (LTC1871EMS#PBF) |
| 70 | LT1618 | 1 | 1.6 | 18 | 2 | 36 | Yes | 1.8m | $1.75 (LT1618EDD#PBF) |
| 71 | LTC1624 | 1 | 3.5 | 36 | 5 | 34.2 | No | 500µ | $3.50 (LTC1624CS8#PBF) |
| 72 | LTC1872 | 1 | 2.5 | 9.8 | 10 | 36 | No | 270µ | $1.85 (LTC1872ES6#TRPBF) |
| 73 | LT1930A | 1 | 2.45 | 16 | 1.2 | 34 | Yes | 4.2m | $1.96 (LT1930AES5#TRPBF) |
| 74 | LT1930 | 1 | 2.45 | 16 | 1.2 | 34 | Yes | 4.2m | $1.96 (LT1930ES5#TRPBF) |
| 75 | LT1619 | 1 | 1.9 | 18 | 20 | 18 | No | 9m | $1.99 (LT1619ES8#PBF) |
| 76 | LT1615-1 | 1 | 1 | 15 | 100m | 36 | Yes | 20µ | $1.70 (LT1615ES5-1#TRPBF) |
| 77 | LT1615 | 1 | 1.2 | 15 | 350m | 36 | Yes | 20µ | $1.70 (LT1615ES5#TRPBF) |
| 78 | LT1949 | 1 | 1.5 | 12 | 1.13 | 30 | Yes | 4.5m | $2.20 (LT1949ES8#PBF) |
| 79 | LT1308B | 1 | 1 | 10 | 3 | 34 | Yes | 2.5m | $3.25 (LT1308BCS8#PBF) |
| 80 | LT1308A | 1 | 1 | 10 | 3 | 34 | Yes | 140µ | $3.25 (LT1308ACS8#PBF) |
| 81 | LT1613 | 1 | 900m | 10 | 800m | 36 | Yes | 3m | $1.70 (LT1613CS5#TRPBF) |
| 82 | LT1610 | 1 | 900m | 8 | 600m | 30 | Yes | 30µ | $1.65 (LT1610CS8#PBF) |
| 83 | LT1374HV | 1 | 5 | 32 | 6 | 27.52 | Yes | 2.5m | $4.85 (LT1374HVCS8#PBF) |
| 84 | LT1374 | 1 | 5 | 25 | 6 | 21.5 | Yes | 2.5m | $4.40 (LT1374CS8#PBF) |
| 85 | LT1316 | 1 | 1.5 | 12 | 500m | 30 | Yes | 33µ | $2.45 (LT1316CS8#PBF) |
| 86 | LT1370HV | 1 | 2.7 | 30 | 6 | 42 | Yes | 4.5m | $6.85 (LT1370HVCT7#PBF) |
| 87 | LT1370 | 1 | 2.7 | 30 | 6 | 35 | Yes | 4.5m | $6.05 (LT1370CT7#PBF) |
| 88 | LT1317B | 1 | 1.5 | 12 | 800m | 30 | Yes | 4.8m | $2.25 (LT1317BCS8#PBF) |
| 89 | LT1317 | 1 | 1.5 | 12 | 800m | 30 | Yes | 100µ | $2.25 (LT1317CS8#PBF) |
| 90 | LT1307B | 1 | 920m | 12 | 600m | 30 | Yes | 1m | $2.05 (LT1307BCS8#PBF) |
| 91 | LT1307 | 1 | 920m | 12 | 600m | 30 | Yes | 50µ | $2.05 (LT1307CN8#PBF) |
| 92 | LT1375HV | 1 | 5 | 30 | 2 | 25.8 | Yes | 2.5m | $3.50 (LT1375HVCS8#PBF) |
| 93 | LT1375 | 1 | 5 | 25 | 2 | 21.5 | Yes | 2.5m | $3.20 (LT1375CS8#PBF) |
| 94 | LT1377 | 1 | 2.7 | 30 | 2 | 35 | Yes | 4m | $4.20 (LT1377CS8#PBF) |
| 95 | LT1171HV | 1 | 3 | 60 | 2.5 | 60 | Yes | 6m | $6.00 (LT1171HVCT#PBF) |
| 96 | LT1171 | 1 | 3 | 40 | 2.5 | 40 | Yes | 6m | $4.60 (LT1171CT#06PBF) |
| 97 | LT1170HV | 1 | 3 | 60 | 5 | 60 | Yes | 6m | $7.25 (LT1170HVCT#06PBF) |
| 98 | LT1170 | 1 | 3 | 40 | 5 | 40 | Yes | 6m | $5.60 (LT1170CT#06PBF) |
| 99 | LT1071HV | 1 | 3 | 60 | 2.5 | 40 | Yes | 6m | $6.00 (LT1071HVCT#PBF) |
| 100 | LT1071 | 1 | 3 | 40 | 2.5 | 40 | Yes | 6m | $4.60 (LT1071CT#06PBF) |
| 101 | LT1070HV | 1 | 3 | 60 | 5 | 40 | Yes | 6m | $7.25 (LT1070HVCT#06PBF) |
| 102 | LT1070 | 1 | 3 | 40 | 5 | 40 | Yes | 6m | $5.60 (LT1070CT#06PBF) |
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