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Analog Devices LT8376 | Demoboard EVAL-LT8376-AZ
60V, 2A Silent Switcher Synchronous Step-Down LED Driver
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 43-57 V |
| Schaltfrequenz | 200-2000 kHz |
| Ausgang 1 | 36 V / 1.5 A |
Beschreibung
Evaluation board EVAL-LT8376-AZ is a 60V, 2A synchronous Buck LED driver featuring the LT8376. EVAL-LT8376-AZ drives a single string of LEDs up to 36V at 1.5A when VIN is between 43V and 57V. EVAL-LT8376-AZ has an undervoltage lockout (UVLO) set at 40V with 2V hysteresis for turn-on. EVAL-LT8376-AZ runs at 350kHz switching frequency and features optional spread spectrum modulation (SSFM). With SSFM enabled, LT8376 modulates its switching frequency from fSW to fSW + 25% to reduce EMI emissions.The LT8376 has an input voltage range of 3.6V to 60V. LT8376 has internal, synchronous 60V switches for high efficiency and small size. LT8376 has an adjustable switching frequency between 200kHz and 2MHz. The LT8376 can be synchronized with an external clock source or configured with SSFM enabled for low EMI. EVAL-LT8376-AZ includes a SYNC/SSFM jumper to configure the LT8376 for either external frequency synchronization, SSFM enabled for low EMI, or set to normal operation with SSFM disabled.
Eigenschaften
- ±1.5% LED Current Regulation
- ±2% Output Voltage Regulation
- 5000:1 PWM Dimming at 100Hz
- 128:1 Internal PWM Dimming
- Spread-Spectrum Frequency Modulation
- Silent Switcher® Architecture for Low EMI
- 3.6V to 60V Input Voltage Range
- 0V to 60V LED String Voltage
- 3A, 60V Internal Switches
- 200kHz to 2MHz with SYNC Function
- 99.9% Maximum Duty Cycle
- 20:1 Analog or Duty Cycle LED Current Control
- Open/Short LED Protection and Fault Indication
- Accurate LED Current Sense with Monitor Output
- Programmable UVLO
- Thermally Enhanced 28-Lead (4mm × 5mm) LQFN
Typische Anwendungen
- Industrial and General Purpose Lighting, Automotive Lighting
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | f(mm) | C | Tol. C | VR(V (DC)) | Bauform | DF(%) | RISO | Keramiktyp | B(mm) | Fl(mm) | Verpackung | Pins | Typ | Montageart | L(mm) | H(mm) | IR(A) | Arbeitsspannung(V (AC)) | Betriebstemperatur | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 10 V(DC), –, 2.2 µF | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 10 V(DC) | – | Kapazität2.2 µF | Kapazität±20% | Nennspannung10 V (DC) | Bauform0402 | Verlustfaktor10 % | Isolationswiderstand0.05 GΩ | KeramiktypX5R Klasse II | Breite0.5 mm | Pad Dimension0.25 mm | Verpackung7" Tape & Reel | – | – | – | Länge1 mm | Höhe0.5 mm | – | – | Betriebstemperatur -55 °C up to +85 °C | |||||
 | WR-PHD Stiftleisten, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | – | – | VerpackungBeutel | Pins4 | TypGerade | MontageartTHT | Länge4 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C | |||
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWA-SNSR Self-Retaining Spacer | Bohrung in Blende4.8 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | Länge9.5 mm | – | – | – | Betriebstemperatur -30 °C up to +85 °C | |||
 | WR-PHD Kurzschlussbrücken, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Kurzschlussbrücken | – | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | – | – | VerpackungBeutel | Pins2 | – | – | – | – | Nennstrom3 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -25 °C up to +105 °C | |||
 | WR-PHD Stiftleisten, –, – | Simulation– | Downloads7 Dateien | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | – | – | VerpackungBeutel | Pins6 | TypGerade | MontageartTHT | Länge6 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C |