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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
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | L (mm) | f (mm) | C | VR (V (DC)) | Endurance (h) | Operating Temperature | IRIPPLE (mA) | Z (mΩ) | ILeak (µA) | DF (%) | Ø D (mm) | Pins (pcs) | Rows | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 62000621121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Dual Pin Header | 6 | – | – | – | – | – | – | – | – | – | – | 6 | Dual | Pin Header | Straight | 2 | Bag | |
 | 702931000 | SPEC | – | 3 files | WA-SNSR Self-Retaining Spacer | 6.4 | 4.8 | – | – | – | -30 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | |
| 62000821121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Dual Pin Header | 8 | – | – | – | – | -40 °C up to +105 °C | – | – | – | – | – | 8 | Dual | Pin Header | Straight | 2 | Bag | |
 | 865080657018 | SPEC | 7 files | WCAP-ASLI Aluminum Electrolytic Capacitors | 10.5 | – | 220 µF | 50 | 2000 | -55 °C up to +105 °C | 650 | 230 | 110 | 12 | 10 | – | – | – | – | – | 15" Tape & Reel |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 62000621121 | SPEC | – |
| 702931000 | SPEC | – |
| 62000821121 | SPEC | – |
| 865080657018 | SPEC |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Product series | L (mm) | f (mm) | C | VR (V (DC)) | Endurance (h) | Operating Temperature | IRIPPLE (mA) | Z (mΩ) | ILeak (µA) | DF (%) | Ø D (mm) | Pins (pcs) | Rows | Gender | Type | IR (A) | Packaging | Samples |
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