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Overview
| Topology | Buck Converter |
| Input voltage | 6-40 V |
| Switching frequency | 1000 kHz |
| Output 1 | 2 A |
| IC revision | 1.0 |
Description
The IS31LT3354 is a continuous mode inductivestep-down converter, designed for driving a single LEDor multiple series connected LEDs efficiently from avoltage source higher than the required LED voltage.The device operates from an input supply between 6Vand 40V and provides an externally adjustable outputcurrent of up to 2A or even higher, which is determinedby the external MOSFET and inductor
Features
Simple low parts count
- Wide input voltage range: 6V to 40V
- Output Current only limited by external componentselection
- High efficiency (up to 98% )
- Typical 1200:1 dimming ratio
- Typical 5% output current accuracy
- Single pin on/off and brightness control using DCvoltage or PWM
- Up to 1MHz switching frequency
- Inherent open-circuit LED protection
- Thermal shutdown protection circuitry
Typical applications
- Low voltage industrial lighting
- Automotive lighting
- Illuminated sign
- LED back-up lighting
- Low voltage halogen replacement LEDs
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | ISAT,10% (A) | ISAT,30% (A) | IR,40K (A) | IRP,40K (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744770147 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | 47 | 3.3 | 4.3 | 3 | 4.25 | 64 | 7.9 | 1280 | Standard |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | ISAT,10% (A) | ISAT,30% (A) | IR,40K (A) | IRP,40K (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | Samples |
|---|