Step-Down (Buck) Regulators
Analog Devices manufactures a broad line of high performance, step-down buck switching regulator ICs and buck switching controller ICs with both synchronous and nonsynchronous switches. These switching voltage regulators offer typical input voltage capability from less than 2 V up to 100 V+, switching frequencies up to 4 MHz, and high efficiency operation up to 96%. With burst mode operation, quiescent currents in the tens of micro-amps level can be attained. This combination of features allows for very small, low profile buck switching regulator circuit implementations with minimum external components.
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Актуальные ресурсы по теме
Заметки разработчика
- Triple Bucks Plus a Boost Controller to Meet Tough Requirements of Wide Range VIN Automotive Applications
- 42 V, 2 A/3 A Peak Synchronous Step-Down Regulators with 2.5 µA Quiescent Current and Ultralow EMI Emission
- High Voltage LTC3892 Family of Controllers Reduces DC-to-DC Converter Cost and Size
- 42V Monolithic Synchronous Step-Down Regulators with 2.5µA Quiescent Current and Ultralow EMI
- Monolithic 65V , 8A Step-Down Regulators with Fast Transient Response and Ultralow EMI Emissions
Технические статьи
- Self-Driving Cars—Are Power Systems up to the Task?
- AN168 - Implementing Fast Telemetry with Power System Management Controllers
- AN170 - Honing the Adjustable Compensation Feature of Power System Management Controllers
- Tiny, High Efficiency Monolithic Regulators Power Advanced SoCs and Microprocessors Feature Silent Switcher 2 Technology for Low EMI
- Three Bucks Plus a Boost Controller Meet the Stringent Requirements of Wide-Range VIN Automotive Applications
- 40V Input, 3.5A Silent Switcher µModule Regulator for Automotive and Industrial Applications
- LT8650S Demo Board | Dual Channel 42V, 4A Synchronous Step-Down Silent Switcher 2
- LTC7800EUDC Demo Board With GaNFETS/500kHz | 30V ≤ VIN ≤ 55V; VOUT = 12V @ 20A
Журнал LT
Статьи по применению
- AN170 - Honing the Adjustable Compensation Feature of Power System Management Controllers PDF
- AN168 - Implementing Fast Telemetry with Power System Management Controllers PDF
- AN166 - In Flight Update with Linduino PDF
- AN155 - Fault Log Decoding with Linduino PSM PDF
- AN153 - Linduino for Power System Management PDF
- AN152 - Power System Management Addressing (Rev. A) PDF
- AN149 - Modeling and Loop Compensation Design of Switching Mode Power Supplies PDF
- AN145 - Overview of the EEPROM in LTC PSM Devices PDF
- AN119A - Powering Complex FPGA-Based Systems Using Highly Integrated DC/DC uModule Regulator Systems PDF
- AN144 - Reduce EMI and Improve Efficiency with Silent Switcher Designs PDF
- AN140 - Basic Concepts of Linear Regulator and Switching Mode Power Supplies (Rev. C) PDF
- AN126 - 2-Wire Virtual Remote Sensing for Voltage Regulators - Clairvoyance Marries Remote Sensing PDF
- AN137 - Accurate Temperature Sensing with an External P-N Junction PDF
- AN136 - PCB Layout Considerations for Non-Isolated Switching Power Supplies PDF
- AN135 - Implementing Robust PMBus System Software for the LTC3880 PDF
- AN133 - A Closed-Loop, Wideband, 100A Active Load PDF
- AN110 - LTM4601 DC/DC uModule Thermal Performance PDF
- AN103 - LTM4600 DC/DC uModule Thermal Performance PDF
- AN119B - Powering Complex FPGA-Based Systems Using Highly Integrated DC/DC uModule Regulator Systems PDF
- AN117 - DC/DC uModule Regulator Printed Circuit Board Design Guidelines PDF
- AN98 - Signal Sources, Conditioners and Power Circuitry Circuits of the Fall, 2004 PDF
- AN90 - Current Sources for Fiber Optic Lasers: A Compendium of Pleasant Current Events PDF
- AN84 - Linear Technology Magazine Circuit Collection, Volume IV PDF
- AN77 - High Efficiency, High Density, PolyPhase Converters for High Current Applications PDF
Step-Down (Buck) Regulators
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Output Current (typ) (A) | Output Current 2 (typ) (A) | Monolithic | Vout Min (typ) (V) | Synchronous | Isupply (typ) (A) | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LTC3309A | 1 | 2.25 | 5.5 | 6 | - | Yes | 500m | Yes | 1.2m | $1.90 (LTC3309AEV#TRMPBF) |
| 2 | LT8636 | 1 | 3.4 | 42 | 5 | - | Yes | 970m | Yes | 1.7µ | $3.70 (LT8636EV#PBF) |
| 3 | LTM8024 (single output) | 1 | 3 | 40 | 7 | - | Yes | 800m | Yes | 90µ | $11.65 (LTM8024EY#PBF) |
| 4 | LTM8024 (dual output) | 2 | 3 | 40 | 3.5 | 3.5 | Yes | 800m | Yes | 90µ | $11.65 (LTM8024EY#PBF) |
| 5 | LTM4671 | 4 | 3.1 | 20 | 12 | 12 | Yes | 600m | Yes | 75m | $27.48 (LTM4671EY#PBF) |
| 6 | LTM4668A | 4 | 2.7 | 17 | 1.2 | 1.2 | Yes | 600m | Yes | 500µ | $6.55 (LTM4668AEY#PBF) |
| 7 | LTM4668 | 4 | 2.7 | 17 | 1.2 | 1.2 | Yes | 600m | Yes | 500µ | $6.55 (LTM4668EY#PBF) |
| 8 | LTM4664 (single output) | 1 | 30 | 58 | 50 | - | Yes | 500m | Yes | 2.3 | $57.48 (LTM4664EY#PBF) |
| 9 | LTM4664 (dual output) | 2 | 30 | 58 | 25 | 25 | Yes | 500m | Yes | 2.3 | $57.48 (LTM4664EY#PBF) |
| 10 | LTC7852 | 2 | - | - | 200 | 200 | No | 500m | Yes | 15m | $2.59 (LTC7852EUFD-1#PBF) |
| 11 | LT7101 | 1 | 4.4 | 105 | 1 | - | Yes | 1 | Yes | 200µ | $3.95 (LT7101EUHE#PBF) |
| 12 | LTC3376 | 4 | 3 | 20 | 3 | 3 | Yes | 400m | Yes | 42µ | $4.95 (LTC3376EY#PBF) |
| 13 | LTC3315A | 2 | 2.25 | 5.5 | 2 | 2 | Yes | 500m | Yes | 70µ | $1.80 (LTC3315AEV#TRMPBF) |
| 14 | LT8550 | 4 | 3.6 | 80 | 25 | 25 | No | - | Yes | 800µ | $2.95 (LT8550EUKG#PBF) |
| 15 | LTM8078 (single output) | 1 | 3 | 40 | 2.8 | - | Yes | 800m | Yes | 10m | $6.53 (LTM8078EY#PBF) |
| 16 | LTM8078 (dual output) | 2 | 3 | 40 | 1.4 | 1.4 | Yes | 800m | Yes | 10m | $6.53 (LTM8078EY#PBF) |
| 17 | LTM4638 | 1 | 3.1 | 20 | 15 | - | Yes | 600m | Yes | 18m | $13.80 (LTM4638EY#PBF) |
| 18 | LTM4626 | 1 | 3.1 | 20 | 12 | - | Yes | 600m | Yes | 18m | $10.50 (LTM4626EY#PBF) |
| 19 | LT8650S-1 | 2 | 3 | 42 | 4 | 4 | Yes | 800m | Yes | 3.7µ | $6.58 (LT8650SHV-1#PBF) |
| 20 | LT8645S-2 | 1 | 3.4 | 65 | 8 | - | Yes | 970m | Yes | 1.7µ | $4.75 (LT8645SEV-2#PBF) |
| 21 | LT8609B | 1 | 3 | 42 | 2 | - | Yes | 800m | Yes | 2.5µ | $2.40 (LT8609BEMSE#PBF) |
| 22 | LT8609A | 1 | 3 | 42 | 2 | - | Yes | 800m | Yes | 2.5µ | $2.50 (LT8609AEMSE#PBF) |
| 23 | LT8609 | 1 | 3 | 42 | 2 | - | Yes | 800m | Yes | 2.5µ | $2.50 (LT8609EMSE#PBF) |
| 24 | LTC7151S | 1 | 3.1 | 20 | 15 | - | Yes | 500m | Yes | 2m | $3.75 (LTC7151SEV#PBF) |
| 25 | LTC3889 | 2 | 5 | 60 | 20 | 20 | No | 1 | Yes | 26m | $7.63 (LTC3889EUKG#PBF) |
| 26 | LTC3372 | 5 | 4.5 | 60 | 20 | 2 | No | 800m | Yes | 33µ | $5.75 (LTC3372EUK#PBF) |
| 27 | LTM8074 | 1 | 3.2 | 40 | 1.2 | - | Yes | 800m | Yes | 8µ | $3.83 (LTM8074EY#PBF) |
| 28 | LTM8071 | 1 | 3.6 | 60 | 5 | - | Yes | 970m | Yes | 3µ | $14.53 (LTM8071EY#PBF) |
| 29 | LTM8002 | 1 | 3.4 | 40 | 2.5 | - | Yes | 970m | Yes | 25µ | $9.12 (LTM8002IY#PBF) |
| 30 | LTM4700 (single output) | 1 | 4.5 | 16 | 100 | - | Yes | 500m | Yes | 50m | $97.26 (LTM4700EY#PBF) |
| 31 | LTM4700 (dual output) | 2 | 4.5 | 16 | 50 | 50 | Yes | 500m | Yes | 50m | $97.26 (LTM4700EY#PBF) |
| 32 | LTM4680 | 2 | 4.5 | 16 | 30 | 30 | Yes | 500m | Yes | 37m | $58.00 (LTM4680EY#PBF) |
| 33 | LTC3894 | 1 | 4.5 | 150 | 10 | - | No | 800m | No | 21µ | $2.55 (LTC3894EFE#PBF) |
| 34 | LTC3310S | 1 | 2.25 | 5.5 | 10 | - | Yes | 500m | Yes | 1.3m | $2.60 (LTC3310SEV#PBF) |
| 35 | LTM4686-1 (single output) | 1 | 2.375 | 17 | 20 | - | Yes | 500m | Yes | 20m | $23.23 (LTM4686EV-1#PBF) |
| 36 | LTM4686-1 (dual output) | 2 | 2.375 | 17 | 10 | 10 | Yes | 500m | Yes | 20m | $23.23 (LTM4686EV-1#PBF) |
| 37 | LTM4686 (single output) | 1 | 4.5 | 17 | 20 | - | Yes | 500m | Yes | 20m | $23.23 (LTM4686EV#PBF) |
| 38 | LTM4686 (dual output) | 2 | 4.5 | 17 | 10 | 10 | Yes | 500m | Yes | 20m | $23.23 (LTM4686EV#PBF) |
| 39 | LTM4678 (single output) | 1 | 4.5 | 16 | 50 | - | Yes | 500m | Yes | 20m | $47.48 (LTM4678EY#PBF) |
| 40 | LTM4678 (dual output) | 2 | 4.5 | 16 | 25 | 25 | Yes | 500m | Yes | 20m | $47.48 (LTM4678EY#PBF) |
| 41 | LTM4662 | 2 | 4.5 | 20 | 15 | 15 | Yes | 600m | Yes | 20m | $28.75 (LTM4662EY#PBF) |
| 42 | LTM4653 | 1 | 3.1 | 58 | 4 | - | Yes | 500m | Yes | 450µ | $12.55 (LTM4653EY#PBF) |
| 43 | LTM4646 | 2 | 4.5 | 20 | 10 | 10 | Yes | 600m | Yes | 17m | $18.85 (LTM4646EY#PBF) |
| 44 | LTC7815 | 3 | 2.5 | 38 | 25 | 25 | No | 800m | Yes | 38µ | $4.35 (LTC7815EUHF#PBF) |
| 45 | LTC7810 | 2 | 4.5 | 140 | 15 | 15 | No | 1 | Yes | 78µ | $5.20 (LTC7810ELXE#PBF) |
| 46 | LTC3883 | 1 | 4.5 | 24 | 30 | - | No | 500m | Yes | 20m | $4.82 (LTC3883EUH#PBF) |
| 47 | LT8646S | 1 | 3.4 | 65 | 8 | - | Yes | 970m | Yes | 17µ | $5.95 (LT8646SEV#PBF) |
| 48 | LT8642S | 1 | 2.8 | 18 | 10 | - | Yes | 597m | Yes | 230µ | $4.15 (LT8642SEV#PBF) |
| 49 | LT8619 | 1 | 3 | 60 | 1.2 | - | Yes | 800m | Yes | 6µ | $2.65 (LT8619EDD#PBF) |
| 50 | LTM8065 | 1 | 3.4 | 40 | 2.5 | - | Yes | 970m | Yes | 8µ | $7.75 (LTM8065EY#PBF) |
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