LM5009
Nicht synchroner Abwärtsregler (Buck), großer Eingangsbereich, 9,5–95 V, 150 mA, mit konstanter Eins
Eine neuere Version dieses Produkts ist verfügbar
LM5009
- Newer product: LM5163 100-V, 0.5-A synchronous buck DC/DC converter
- Integrated N-channel MOSFET
- 150-mA output current capability
- Ultra-fast transient response
- No loop compensation required
- VIN feedforward provides constant operating frequency
- Switching frequency can exceed 600 kHz
- Highly efficient operation
- 2% accurate 2.5-V feedback from –40°C to +125°C
- Internal start-up regulator
- Intelligent current limit protection
- External shutdown control
- Thermal shutdown
- 8-pin VSSOP and thermally enhanced 8-pin WSON packages
The LM5009 step-down switching regulator features all of the functions needed to implement a low-cost and efficient, buck regulator. This device is capable of driving a 150-mA load current from a 9.5-V to 95-V input source. The switching frequency can exceed 600 kHz, depending on the input and output voltages. The output voltage can be set from 2.5 V to 85 V. This high-voltage regulator contains an N-channel buck switch and an internal startup regulator. The device is easy to implement and is provided in 8-pin VSSOP and thermally-enhanced, 8-pin WSON packages. The regulator operation is based on a control scheme using an on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant over load and input voltage variations. The control scheme requires no loop compensation, resulting in an ultrafast transient response. An intelligent current limit is implemented with forced off-time that is inversely proportional to VOUT. This scheme ensures short-circuit protection and provides minimum foldback. Other features include thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout, and maximum duty cycle limiter.
The new product LM5163 offers reduced BOM count, reduced solution size, lower operating quiescent current and many other features. Start WEBENCH design with LM5163.
Technische Dokumentation
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | LM5009 Wide Input, 100-V,150-mA, Step-Down Switching Regulator datasheet (Rev. I) | PDF | HTML | 25 Mai 2021 |
| Application note | Stability Analysis and Design of COT Type-3 Ripple Circuit | 20 Mär 2019 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Technical article | Simplifying 100V wide VIN power conversion | PDF | HTML | 11 Nov 2016 | |
| Technical article | Who tampered with my PLC? Are industrial control systems too flexible? | PDF | HTML | 05 Aug 2016 | |
| White paper | Wide VIN power management ICs simplify white paper (Rev. A) | 19 Sep 2013 | ||
| Application note | AN-1820 LM5032 Interleaved Boost Converter (Rev. A) | 06 Mai 2013 | ||
| Application note | Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B) | 30 Apr 2013 | ||
| Application note | Boot Capacitor Regulation in LM25007 Constant-On-Time (COT) Converter (Rev. A) | 23 Apr 2013 | ||
| Application note | Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) | 23 Apr 2013 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
LM5009EVAL — 150 mA, 100 V, Abwärts-Schaltregler mit großem Vin-Bereich – Evaluierungsmodul
LM5009 150mA, 100V Step-Down Switching Regulator
LM5009 TINA-TI Transient Reference Design
TIDA-01552 — 8-Kanal, 2 A, Highside-Treiber-Referenzdesign für Module mit Digital-Ausgang
TIDA-00236 — 8-kanaliges Low-Side-Digitalausgangsmodul mit jeweils 0,5 A für SPS
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| WSON (NGU) | 8 | Ultra Librarian |
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