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Overview
| Topology | Boost Converter |
| Input voltage | 9-36 V |
| Switching frequency | 100-2000 kHz |
| Output 1 | 60 V / 3 A |
Description
Evaluation circuit EVAL-LT8277-AZ is a dual-phase non-synchronous high-power step-up converter featuring the LT8277. It regulates the output voltage up to 60V and drives up to a 3A load at 60V when the VIN is between 9V and 36V. The EVAL-LT8277-AZ runs at 200kHz switching frequency with the ability to turn on spread spectrum frequency modulation (SSFM) for reduced EMI emission. It can run with or without SPI communications. Multiple EVAL-LT8277-AZ can be paralleled to deliver more output power. A graphic user interface (GUI) is available when connected to a DC2026C Linduino One demo circuit.
Features
- Wide Input Voltage Range: 3V to 40V
- 2-Phase Interleaved Operation Reduces Input and Output Capacitance Requirements
- SPI Interface for Output Voltage Adjustment
- Low Shutdown Current < 1μA
- Internal 5V Low Dropout Voltage Regulator Supplied from VIN or VOUT
- PGOOD Output Status Reporting Pin
- Programmable Internal Frequency: 100kHz to 2MHz
- Frequency Synchronization
- Clock Output for 4- or 8-Phase Operation
- Spread Spectrum Frequency Modulation (SSFM) for EMI Reduction
- Available in a 3mm × 4mm 20-Lead Side Solderable QFN Package
- AEC-Q100 Qualified for Automotive Applications
Typical applications
- Automotive, Telecom, and Industrial Power Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(mm) | f(mm) | C | VR(V (DC)) | Endurance(h) | IRIPPLE(mA) | Z(mΩ) | ILeak(µA) | DF(%) | Ø D(mm) | Packaging | Pins | Type | Mount | IR(A) | Working Voltage(V (AC)) | Operating Temperature | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWR-PHD Pin Header, 6 mm, – | Simulation– | Availability – | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | Length6 mm | – | – | – | – | – | – | – | – | – | PackagingBag | Pins6 | TypeStraight | MountTHT | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | –Check availability | |
 | SPECWA-SNSR Self-Retaining Spacer, 6.4 mm, 4.8 mm | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Length6.4 mm | Drilling in Panel4.8 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -30 °C up to +85 °C | –Check availability | ||
 | SPECWR-PHD Pin Header, 8 mm, – | Simulation– | Availability – | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | Length8 mm | – | – | – | – | – | – | – | – | – | PackagingBag | Pins8 | TypeStraight | MountTHT | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | –Check availability | |
 | SPECWCAP-ASLI Aluminum Electrolytic Capacitors, 10.5 mm, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ASLI Aluminum Electrolytic Capacitors | Length10.5 mm | – | Capacitance220 µF | Rated Voltage50 V (DC) | Endurance 2000 | Ripple Current650 mA | Impedance230 mΩ | Leakage Current110 µA | Dissipation Factor12 % | Diameter10 mm | Packaging15" Tape & Reel | – | – | MountV-Chip SMT | – | – | Operating Temperature -55 °C up to +105 °C | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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