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Overview
| Topology | Buck Converter |
| Input voltage | 42-57 V |
| Output 1 | 36 V / 1.2 A |
Description
Evaluation board EVAL-LT8374-AZ is a synchronous stepdown LED driver featuring the LT8374. It drives up to 36V of LEDs at 1.2A when the EMIVIN terminal is between 42V and 57V. EVAL-LT8374-AZ runs at 330kHz switching frequency and features options for spread-spectrum frequency modulation (SSFM) or external synchronization.The LT8374 has an input voltage range of 6.5V to 60V. It features 60V synchronous internal power switches for high efficiency and small solution size. The switching frequency of LT8374 is fixed at 330kHz, and the device can be synchronized with an external clock source or configured with internal SSFM for low EMI. With SSFM enabled, the LT8374 modulates its switching frequency between 330kHz and 410kHz to reduce switching emissions. EVALLT8374- AZ includes a SYNC/SSFM jumper to configure the LT8374 for either external synchronization, SSFM, or set to normal operation.
Features
- Low Component Count and Simple Solution
- Wide Input Voltage Range: 6.5V to 60V
- 0V to 59V LED String Voltage
- ±3% LED Current Regulation
- Spread-Spectrum Frequency Modulation
- Internal Compensation Capacitor
- 20:1 Analog, Duty Cycle or PWM LED Current Control
- 330kHz/2MHz Fixed Internal Frequency (LT8374/LT8374-1)
- External Frequency Synchronization
- 4mm × 4mm 16-Pin Side Solderable QFN Package
- AEC-Q100 Qualified for Automotive Applications
Typical applications
- Automotive Lighting, Matrix LED Lighting, General Purpose LED Driver
- Current Sources
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | fres(MHz) | VOP(V) | Pins | Type | Mount | L(mm) | H(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-MAPI SMT Power Inductor, 4.7 µH, 1.45 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance4.7 µH | Performance Rated Current1.45 A | Saturation Current @ 30%2.65 A | DC Resistance300 mΩ | Self Resonant Frequency35 MHz | Operating Voltage80 V | Pins2 | – | MountSMT | Length2.5 mm | Height1.2 mm | Rated Current1 A | – | Operating Temperature -40 °C up to +125 °C | ||||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | Pins2 | – | – | – | – | Rated Current3 A | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | Pins6 | TypeStraight | MountTHT | Length6 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |