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Texas Instruments LM3489MM | Demoboard USB-C-PD-DUO-EVM
Hysteretic PFET Buck Controller with Enable Pin
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 4.5-35 V |
| Ausgang 1 | 35 V |
Beschreibung
The LM3489 device is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost-effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated enable pin provides a shutdown mode drawing only 7 µA. Leaving the enable pin unconnected defaults to on.Current limit protection can be implemented by measuring the voltage across the PFET’s RDS(ON), thus eliminating the need for a sense resistor. A sense resistor may be used to improve current limit accuracy if desired. The cycle-by-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.
Eigenschaften
- Qualified for Automotive Parts
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C5
- Easy-to-Use Control Methodology
- No Control Loop Compensation Required
- Wide 4.5-V to 35-V Input Range
- 1.239 V to VIN Adjustable Output Range
- High Efficiency: 93%
- ±1.3% (±2% Over Temperature) Internal Reference
- 100% Duty Cycle Operation
- Maximum Operation Frequency > 1 MHz
- Current Limit Protection
- Dedicated Enable Pin (on if Unconnected)
- Shutdown Mode Draws Only 7-µA Supply Current
- 8-Pin VSSOP Package
Typische Anwendungen
- Automotive
- Battery-Powered Portable Applications, Distributed Power Systems, Always-On Power
- Set-Top Boxes, DSL or Cable Modems, PC/IA, Auto PCs, TFT Monitors
- High-Power LED Drivers
Weiterführende Informationen
Artikeldaten
| Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | λDom typ. (nm) | Farbe | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chiptechnologie | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Bauform | Betriebstemperatur | DF (%) | RISO | Keramiktyp | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT1 (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Montageart | Anwendung | Interface typ | Typ | Arbeitsspannung (V (DC)) | H (mm) | Betätigungskraft (Value) (g) | Elektrische Lebensdauer (Cycles) | Actuator-Farbe | Dampfphasenprozess | Pins (Value) (pcs) | Farbe | Gender | IR (mA) | Verpackung | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 150060GS75000 | SPEC | 25 Dateien Strahldaten
| Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WL-SMCW SMT Mono-color Chip LED Waterclear | 525 | Grün | 515 | 430 | 3.2 | InGaN | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | 1.6 | 0.8 | – | – | – | – | – | – | – | SMT | – | – | – | – | 0.7 | – | – | – | – | – | – | – | – | Tape and Reel | ||
 | 74437324100 | SPEC Anstehende PCNAufgrund einer anstehenden PCN wird sich in Kürze das Datenblatt des ausgewählten Produktes ändern. Anbei finden Sie das neue Datenblatt, sowie das noch gültige Datenblatt. Bei weiteren Fragen wenden Sie sich bitte an Ihren Vertriebsmitarbeiter. | 8 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-LHMI SMT Speicherdrossel | – | – | – | – | – | – | – | – | – | – | 4020 | -40 °C up to +125 °C | – | – | – | 4.45 | 4.06 | – | 10 | 1.95 | 1.5 | 3.15 | 243 | 23 | SMT | – | – | – | – | 1.8 | – | – | – | – | 2 | – | – | – | – | ||
 | 885012205037 | SPEC | 6 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WCAP-CSGP MLCCs 16 V(DC) | – | – | – | – | – | – | – | 100 nF | ±10% | 16 | 0402 | -55 °C up to +125 °C | 5 | 5 GΩ | X7R Klasse II | 1 | 0.5 | 0.25 | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
 | 434121025816 | SPEC | – | 5 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WS-TASV SMT Tact Switch 6.0x3.8 mm | – | – | – | – | – | – | – | – | – | 12 | – | -40 °C up to +85 °C | – | 100 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2.5 | 160 | 50000 | Schwarz | nicht spezifiziert | – | – | – | 50 | Tape and Reel | |
 | 632723300011 | SPEC | – | 6 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | THR | USB 3.1 | Type C | Horizontal | 20 | – | – | – | – | – | 24 | – | Receptacle | 5000 | Tape and Reel | |
 | 60900213421 | SPEC | – | 3 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | 1000 MΩ | – | 2.44 | – | – | – | – | – | – | – | – | – | – | – | – | 250 | – | – | – | – | – | 1 | Schwarz | Jumper | 3000 | Beutel |
| Artikel Nr. | Datenblatt | Simulation | |
|---|---|---|---|
| 150060GS75000 | SPEC | |
| 74437324100 | SPEC Anstehende PCNAufgrund einer anstehenden PCN wird sich in Kürze das Datenblatt des ausgewählten Produktes ändern. Anbei finden Sie das neue Datenblatt, sowie das noch gültige Datenblatt. Bei weiteren Fragen wenden Sie sich bitte an Ihren Vertriebsmitarbeiter. | |
| 885012205037 | SPEC | |
| 434121025816 | SPEC | – |
| 632723300011 | SPEC | – |
| 60900213421 | SPEC | – |
| Muster |
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| Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | λDom typ. (nm) | Farbe | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chiptechnologie | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Bauform | Betriebstemperatur | DF (%) | RISO | Keramiktyp | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT1 (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Montageart | Anwendung | Interface typ | Typ | Arbeitsspannung (V (DC)) | H (mm) | Betätigungskraft (Value) (g) | Elektrische Lebensdauer (Cycles) | Actuator-Farbe | Dampfphasenprozess | Pins (Value) (pcs) | Farbe | Gender | IR (mA) | Verpackung | Muster |
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