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Overview
| Topology | Buck Converter |
| Input voltage | 6.5-60 V |
| Switching frequency | 310-350 kHz |
| Output 1 | 59 V |
Description
The LT8374/LT8374-1 is a high efficiency, monolithic, synchronous step-down DC/DC converter with fixed-frequency and peak current control. The LED current is programmed by a resistor from CTRL pin to ground or by applying a PWM signal to the CTRL pin. The current sense amplifier has a wide common mode range from 0V to VIN, making the LT8374 ideal for matrix applications. An output voltage limit can be set with a resistor from ISP pin to FB pin.The switching frequency is set at 330kHz/2MHz and can be synchronized to an external clock applied to the SYNC/SPRD pin. With the optional spread-spectrum frequency modulation enabled, the frequency varies from 100% to 125% to reduce EMI.
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
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) | Mount | 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 | MountSMT |