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Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 2.7-5.5 V |
| Ausgang 1 | 24 V |
Beschreibung
The LMR62421 is an easy-to-use, space-efficient 2.1A low-side switch regulator ideal for Boost and SEPIC DC-DC regulation. It provides all the active functions to provide local DC/DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors while providing efficiencies near 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA ideal for portable applications. Tiny 5-pin SOT-23 and 6-pin WSON packages provide space-savings. Additional features include internal soft-start, circuitry to reduce inrush current, pulse-by-pulse current limit, and thermal shutdown.
Eigenschaften
- Input Voltage Range of 2.7V to 5.5V
- Output Voltage up to 24V
- Switch Current up to 2.1A
- 1.6 MHz Switching Frequency
- Low Shutdown Iq, 80 nA
- Cycle-by-Cycle Current Limiting
- Internally Compensated
- Internal Soft-Start
- 5-Pin SOT-23 (2.92 x 2.84 x 1mm) and 6-Pin WSON (3 x 3 x 0.8 mm) Packaging
- Fully Enabled for WEBENCH® Power Designer
Typische Anwendungen
- LED Applications
- Boost / SEPIC Conversions from 3.3V, 5V Rails, Space Constrained Applications, Embedded Systems
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | λDom typ.(nm) | Emittierte Farbe | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chiptechnologie | 2θ50% typ.(°) | L(µH) | IR(mA) | ISAT(A) | fres(MHz) | Montageart | Pins | L(mm) | H(mm) | Arbeitsspannung(V (AC)) | Betriebstemperatur | Farbe | Gender | Verpackung | Z @ 100 MHz(Ω) | Zmax(Ω) | Testbedingung Zmax | IR 2(mA) | RDC max.(Ω) | Typ | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 630 nm, Superrot | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWL-SMCW SMT Mono-color Chip LED Waterclear | dominante Wellenlänge [typ.]630 nm | Emittierte FarbeSuperrot | Spitzen-Wellenlänge [typ.]645 nm | Lichtstärke [typ.]60 mcd | Durchlassspannung [typ.]1.9 V | ChiptechnologieAlInGaP | Abstrahlwinkel Phi 0° [typ.]140 ° | – | – | – | – | MontageartSMT | – | Länge2 mm | Höhe0.7 mm | – | Betriebstemperatur -40 °C up to +85 °C | – | – | VerpackungTape and Reel | – | – | – | – | – | – | ||||
 | WE-CBF SMT-Ferrit, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-CBF SMT-Ferrit | – | – | – | – | – | – | – | – | Nennstrom500 mA | – | – | MontageartSMT | – | Länge1.6 mm | Höhe0.8 mm | – | Betriebstemperatur -55 °C up to +125 °C | – | – | – | Impedanz @ 100 MHz100 Ω | Maximale Impedanz125 Ω | Maximale Impedanz450 MHz | Nennstrom 21650 mA | Gleichstromwiderstand0.15 Ω | TypBreitband | ||||
 | WE-TPC SMT-Speicherdrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-TPC SMT-Speicherdrossel | – | – | – | – | – | – | – | Induktivität3.3 µH | Nennstrom1500 mA | Sättigungsstrom1.8 A | Eigenresonanzfrequenz100 MHz | MontageartSMT | – | Länge2.8 mm | Höhe2.8 mm | – | Betriebstemperatur -40 °C up to +125 °C | – | – | – | – | – | – | – | Gleichstromwiderstand0.101 Ω | – | ||||
 | WR-PHD Kurzschlussbrücken, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Kurzschlussbrücken | – | – | – | – | – | – | – | – | Nennstrom3000 mA | – | – | – | Pins1 | Länge2.44 mm | – | Arbeitsspannung250 V (AC) | Betriebstemperatur -40 °C up to +125 °C | FarbeSchwarz | GenderJumper | VerpackungBeutel | – | – | – | – | – | – | |||
 | WR-PHD Stiftleisten - Einreihig, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten - Einreihig | – | – | – | – | – | – | – | – | Nennstrom3000 mA | – | – | MontageartTHT | Pins2 | Länge5.08 mm | – | Arbeitsspannung250 V (AC) | Betriebstemperatur -40 °C up to +105 °C | – | GenderStiftleiste | VerpackungBeutel | – | – | – | – | – | TypGerade | |||
 | WR-PHD Stiftleisten - Einreihig, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten - Einreihig | – | – | – | – | – | – | – | – | Nennstrom3000 mA | – | – | MontageartTHT | Pins3 | Länge7.62 mm | – | Arbeitsspannung250 V (AC) | Betriebstemperatur -40 °C up to +105 °C | – | GenderStiftleiste | VerpackungBeutel | – | – | – | – | – | TypGerade |