超低噪声稳压器
ADI公司为具有严格噪声要求的应用提供独特的超低噪声线性和开关稳压器系列，例如密闭环境中的敏感RF或音频电路。这些稳压器提供升压、降压、反相、反激式和Ćuk拓扑架构。噪声等级通常为几十微伏。
产品选型表
Silent Switcher®：高效率、低 EMI最新优势资源
技术文章
- LT8650S Demo Board | Dual Channel 42V, 4A Synchronous Step-Down Silent Switcher 2
- Low EMI Power Solutions and Electromagnetic Compatibility (EMC) Standards
- 36V Input, Low Output Noise, 5A μModule Regulator for Precision Data Acquisition Systems
- Reduce EMI and Improve Efficiency with Silent Switcher Designs
- 采用 LT8614 和 LT3083 / LT6015 的混合宽调光比线性 LED 电流控制器
- 可在 2MHz 提供 95% 效率的 42V 同步降压
LT Journal
应用笔记
- AN118 - High Voltage, Low Noise, DC/DC Converters PDF
- AN144 - Reduce EMI and Improve Efficiency with Silent Switcher Designs PDF
- AN117 - DC/DC uModule Regulator Printed Circuit Board Design Guidelines PDF
- AN94 - Slew Rate Verification for Wideband Amplifiers: The Taming of the Slew PDF
- AN101 - Minimizing Switching Regulator Residue in Linear Regulator Outputs PDF
- AN90 - Current Sources for Fiber Optic Lasers: A Compendium of Pleasant Current Events PDF
- AN85 - Low Noise Varactor Biasing with Switching Regulators: Vanquishing Villainous Vitiators Vis-à-Vis Vital Varactors PDF
- AN84 - Linear Technology Magazine Circuit Collection, Volume IV PDF
- AN75：Circuitry for Signal Conditioning and Power Conversion PDF
- AN70 - A Monolithic Switching Regulator with 100µV Output Noise PDF
超低噪声稳压器
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Topology | Output Current (typ) (A) | Monolithic | EMI Features | Comments | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LTC3309A | 1 | 2.25 | 5.5 | Buck | 6 | Yes | Silent Switcher | 5V, 6A Synchronous Step-Down Silent Switcher | $1.90 (LTC3309AEV#TRMPBF) |
| 2 | LT8636 | 1 | 3.4 | 42 | Buck | 5 | Yes | Silent Switcher | 42V, 5A Synchronous Step-Down Silent Switcher with 2.5µA Quiescent Current | $3.70 (LT8636EV#PBF) |
| 3 | LTM8024 (single output) | 1 | 3 | 40 | Buck | 7 | Yes | Low EMI, Silent Switcher | 40VIN, Dual 3.5A or Single 7A Silent Switcher μModule Regulator | $11.65 (LTM8024EY#PBF) |
| 4 | LTM8024 (dual output) | 2 | 3 | 40 | Buck | 3.5 | Yes | Low EMI, Silent Switcher | 40VIN, Dual 3.5A or Single 7A Silent Switcher μModule Regulator | $11.65 (LTM8024EY#PBF) |
| 5 | LTM8078 (single output) | 1 | 3 | 40 | Buck | 2.8 | Yes | Adjustable Slew Rate, Silent Switcher, Spread Spectrum | Dual 1.4A, Single 2.8A Step-Down Silent Switcher μModule Regulator | $6.53 (LTM8078EY#PBF) |
| 6 | LTM8078 (dual output) | 2 | 3 | 40 | Buck | 1.4 | Yes | Adjustable Slew Rate, Silent Switcher, Spread Spectrum | Dual 1.4A, Single 2.8A Step-Down Silent Switcher μModule Regulator | $6.53 (LTM8078EY#PBF) |
| 7 | LT8650S-1 | 2 | 3 | 42 | Buck | 4 | Yes | Silent Switcher 2 | High Temp Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2µA Quiescent Current | $6.58 (LT8650SHV-1#PBF) |
| 8 | LT8645S-2 | 1 | 3.4 | 65 | Buck | 8 | Yes | Silent Switcher | 65V, 8A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current | $4.75 (LT8645SEV-2#PBF) |
| 9 | LTC7151S | 1 | 3.1 | 20 | Buck | 15 | Yes | Silent Switcher 2 | 20V, 15A Synchronous Step-Down Silent Switcher 2 Regulator | $3.75 (LTC7151SEV#PBF) |
| 10 | LTM8074 | 1 | 3.2 | 40 | Buck | 1.2 | Yes | Silent Switcher | 40VIN, 1.2A Silent Switcher µModule Regulator | $3.83 (LTM8074EY#PBF) |
| 11 | LTM8071 | 1 | 3.6 | 60 | Buck | 5 | Yes | Silent Switcher | 60VIN, 5A Silent Switcher µModule Regulator | $14.53 (LTM8071EY#PBF) |
| 12 | LTM8002 | 1 | 3.4 | 40 | Buck | 2.5 | Yes | Silent Switcher | 40VIN, 2.5A Silent Switcher µModule Regulator | $9.12 (LTM8002IY#PBF) |
| 13 | LTC3310S | 1 | 2.25 | 5.5 | Buck | 10 | Yes | Silent Switcher 2 | 5V, 10A Synchronous Step-Down Silent Switcher 2 in 3mm x 3mm LQFN | $2.60 (LTC3310SEV#PBF) |
| 14 | LTM4653 | 1 | 3.1 | 58 | Buck | 4 | Yes | EN55022 Class B Certified | EN55022B Compliant 58V, 4A Step-Down DC/DC µModule Regulator | $12.55 (LTM4653EY#PBF) |
| 15 | LT8646S | 1 | 3.4 | 65 | Buck | 8 | Yes | Silent Switcher 2, Spread Spectrum | 65V, 8A Step-Down Silent Switcher 2, External Compensation | $5.95 (LT8646SEV#PBF) |
| 16 | LT8642S | 1 | 2.8 | 18 | Buck | 10 | Yes | Silent Switcher 2 | 18V, 10A Synchronous Step-Down Silent Switcher 2 | $4.15 (LT8642SEV#PBF) |
| 17 | LTM8065 | 1 | 3.4 | 40 | Buck | 2.5 | Yes | Silent Switcher | 40VIN, 2.5A Silent Switcher µModule Regulator | $7.75 (LTM8065EY#PBF) |
| 18 | LTM8063 | 1 | 3.2 | 40 | Buck | 2 | Yes | Silent Switcher | 40VIN, 2A Silent Switcher µModule Regulator | $6.95 (LTM8063EY#PBF) |
| 19 | LTM4651 | 1 | 3.6 | 58 | Inverting | - | Yes | EN55022 Class B Certified | EN55022B Compliant 58V, 24W Inverting-Output DC/DC µModule Regulator | $14.75 (LTM4651EY#PBF) |
| 20 | LT8650S | 2 | 3 | 42 | Buck | 4 | Yes | Silent Switcher 2 | Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2µA Quiescent Current | $5.75 (LT8650SEV#PBF) |
| 21 | LTC7150S | 1 | 3.1 | 20 | Buck | 20 | Yes | Silent Switcher 2 | 20V, 20A Synchronous Step-Down Regulator | $5.60 (LTC7150SEY#PBF) |
| 22 | LTC7103 | 1 | 4.4 | 105 | Buck | 2.3 | Yes | Low EMI | 105V, 2.3A Low EMI Synchronous Step-Down Regulator | $4.50 (LTC7103EUHE#PBF) |
| 23 | LT8643S | 1 | 3.4 | 42 | Buck | 6 | Yes | Silent Switcher 2 | 42V, 6A Sync Step-Down Silent Switcher 2 with 2.5µA Iq, External Comp | $4.65 (LT8643SEV#PBF) |
| 24 | LT8609S | 1 | 3 | 42 | Buck | 2 | Yes | Silent Switcher 2, Spread Spectrum | 42V, 2A/3A Peak Synchronous Step-Down Regulator with 2.5µA Quiescent Current | $2.75 (LT8609SEV#PBF) |
| 25 | LTM8073 | 1 | 3.4 | 60 | Buck | 3 | Yes | Silent Switcher | 60VIN, 3A Silent Switcher µModule Regulator | $10.58 (LTM8073EY#PBF) |
| 26 | LT8645S | 1 | 3.4 | 65 | Buck | 8 | Yes | Silent Switcher 2 | 65V, 8A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current | $4.95 (LT8645SEV#PBF) |
| 27 | LT8640S | 1 | 3.4 | 42 | Buck | 6 | Yes | Silent Switcher 2 | 42V, 6A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current | $4.65 (LT8640SEV#PBF) |
| 28 | LT8643S-2 | 1 | 3.4 | 42 | Buck | 6 | Yes | Silent Switcher 2 | 42V, 6A Synchronous Step-Down Silent Switcher with 2.5µA Quiescent Current | $4.65 (LT8643SEV-2#PBF) |
| 29 | LT8640S-2 | 1 | 3.4 | 42 | Buck | 6 | Yes | Silent Switcher | 42V, 6A Synchronous Step-Down Silent Switcher with 2.5µA Quiescent Current | $4.65 (LT8640SEV-2#PBF) |
| 30 | LT8641 | 1 | 3 | 65 | Buck | 3.5 | Yes | Silent Switcher, Spread Spectrum | 65V, 3.5A Synchronous Step-Down Silent Switcher with 2.5µA Iq | $4.35 (LT8641EUDC#PBF) |
| 31 | LT8640 | 1 | 3.4 | 42 | Buck | 5 | Yes | Silent Switcher | Step-Down Silent Switcher, LT8640 Pulse Skipping, /-1 Forced Continuous | $4.35 (LT8640EUDC#PBF) |
| 32 | LT3999 | 1 | 2.7 | 36 | Push-Pull | 1 | Yes | - | Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control | $2.75 (LT3999EDD#PBF) |
| 33 | LT3048-15 | 1 | 2.7 | 4.8 | Boost, LDO | - | Yes | LDO Post Regulator | Low Noise Bias Generator in 2mm × 2mm, Fixed 15Vout | $1.65 (LT3048EDC-5#TRPBF) |
| 34 | LTM8028 | 1 | 6 | 36 | Buck | 5 | Yes | LDO Post Regulator | 36Vin, UltraFast, Low Output Noise 5A uModule Regulator | $14.20 (LTM8028EY#PBF) |
| 35 | LT8614 | 1 | 3.4 | 42 | Buck | 4 | Yes | Silent Switcher | Silent Switcher Architecture Minimizes EMI, 2.5µA Low Ripple Burst Mode | $4.25 (LT8614EUDC#PBF) |
| 36 | LTM4613 | 1 | 5 | 36 | Buck | 8 | Yes | EN55022 Class B Certified | EN55022B Compliant 36Vin, 15Vout, 8A, DC/DC uModule Regulator | $24.40 (LTM4613EV#PBF) |
| 37 | LTM8033 | 1 | 3.6 | 36 | Buck | 3 | Yes | EN55022 Class B Certified | Ultralow Noise EMC Compliant 36VIN, 3A DC/DC µModule Regulator | $11.95 (LTM8033EV#PBF) |
| 38 | LTM8031 | 1 | 3.6 | 36 | Buck | 1 | Yes | EN55022 Class B Certified | Ultralow Noise EMC Compliant 36V, 1A DC/DC uModule Regulator | $9.95 (LTM8031EV#PBF) |
| 39 | LTM4612 | 1 | 5 | 36 | Buck | 5 | Yes | EN55022 Class B Certified | EN55022B Compliant 36VIN, 15VOUT, 5A, DC/DC µModule | $19.89 (LTM4612EV#PBF) |
| 40 | LTM4606 | 1 | 4.5 | 28 | Buck | 6 | Yes | EN55022 Class B Certified | EN55022B Compliant 28VIN, 6A DC/DC µModule | $16.50 (LTM4606EV#PBF) |
| 41 | LTM8021 | 1 | 3 | 36 | Buck | 500m | Yes | EN55022 Class B Certified | 36VIN, 500mA Step-Down DC/DC µModule | $5.85 (LTM8021EV#PBF) |
| 42 | LTM8032 | 1 | 3.6 | 36 | Buck | 2 | Yes | EN55022 Class B Certified | Ultralow Noise EMC Compliant 36V, 2A DC/DC uModule | $10.95 (LTM8032EV#PBF) |
| 43 | LTM8020 | 1 | 4 | 36 | Buck | 200m | Yes | EN55022 Class B Certified | EN55022B Compliant 36Vin, 200mA, DC/DC µModule | $4.95 (LTM8020EV#PBF) |
| 44 | LT3439 | 1 | 2.8 | 20 | Push-Pull | - | Yes | Adjustable Slew Rate | Slew Rate Controlled Ultralow Noise1A Isolated DC/DC Transformer Driver | $3.50 (LT3439EFE#PBF) |
| 45 | LT1534-1 | 1 | 2.7 | 23 | Boost, Flyback, Sepic | - | Yes | Adjustable Slew Rate | Reduced Conducted/Emitted EMI, Slew Rate Control, Thermally Enhanced SO-16 | $3.93 (LT1534CS-1#PBF) |
| 46 | LT1534 | 1 | 2.7 | 23 | Boost, Flyback, Sepic | - | Yes | Adjustable Slew Rate | Reduced Conducted/Emitted EMI, Slew Rate Control | $3.93 (LT1534CS-1#PBF) |
| 47 | LT1533 | 1 | 2.55 | 23 | Push-Pull | - | Yes | Adjustable Slew Rate | Greatly Reduced Conducted/Emitted EMI, (<100µVPP), Independent Control of Switch Voltage/Current Sle | $4.65 (LT1533CS#PBF) |
| 48 | LT1738 | 1 | 4 | 20 | Boost, Flyback, Inverting, Sepic | - | No | Adjustable Slew Rate | Ultralow noise | $4.10 (LT1738EG#PBF) |
| 49 | LT1683 | 1 | 4 | 20 | Boost, Flyback, Inverting, Push-Pull | - | No | Adjustable Slew Rate | Slew Rate Controlled Ultralow Noise Push-Pull DC/DC Controller | $4.75 (LT1683EG#PBF) |
| 50 | LT1777 | 1 | 7 | 48 | Buck | 440m | Yes | Adjustable Slew Rate | Programmable di/dt Limit for Low Noise Applications | $2.65 (LT1777CS#PBF) |
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