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Overview
| Topology | Buck Converter |
| Input voltage | 3-18 V |
| Switching frequency | 700-1000 kHz |
| Output 1 | 3 A |
| IC revision | 4 |
Description
The LED2000 is an 850 kHz fixed switching frequency monolithic step-down DC-DC converter designed to operate as precise constant current source with an adjustable current capability up to 3 A DC. The embedded PWM dimming circuitry features LED brightness control. The regulated output current is set connecting a sensing resistor to the feedback pin. The embedded synchronous rectification and the 100 mV typical RSENSE voltage drop enhance the efficiency performance. The size of the overall application is minimized thanks to the high switching frequency and ceramic output capacitor compatibility. The device is fully protected against thermal overheating, overcurrent and output short-circuit. The LED2000 is available in VFQFPN 4 mm x 4 mm 8-lead, and standard SO8 package.
Features
- 3.0 V to 18 V operating input voltage range
- 850 kHz fixed switching frequency
- 100 mV typ. current sense voltage drop
- PWM dimming
- ± 7% output current accuracy
- Synchronous rectification
- 95 mΩ HS / 69 mΩ LS typical RDS(on)
- Peak current mode architecture
- Embedded compensation network
- Internal current limiting
- Ceramic output capacitor compliant
- Thermal shutdown
Typical applications
- Halogen bulb replacement/ Signage/ General lighting/ High brightness LED driving
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 1 µH, 16.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance1 µH | Performance Rated Current16.8 A | Saturation Current @ 10%8 A | Saturation Current @ 30%19 A | DC Resistance4.6 mΩ | Self Resonant Frequency85 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 1.5 µH, 13.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance1.5 µH | Performance Rated Current13.8 A | Saturation Current @ 10%4.5 A | Saturation Current @ 30%14 A | DC Resistance6.6 mΩ | Self Resonant Frequency72 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 2.2 µH, 10.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance2.2 µH | Performance Rated Current10.2 A | Saturation Current @ 10%5.6 A | Saturation Current @ 30%13 A | DC Resistance11.4 mΩ | Self Resonant Frequency52 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 3.3 µH, 8.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance3.3 µH | Performance Rated Current8.1 A | Saturation Current @ 10%4.5 A | Saturation Current @ 30%11 A | DC Resistance17.2 mΩ | Self Resonant Frequency43 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 4.7 µH, 7.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance4.7 µH | Performance Rated Current7.8 A | Saturation Current @ 10%2.5 A | Saturation Current @ 30%7 A | DC Resistance19.5 mΩ | Self Resonant Frequency33 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 4.9 µH, 8.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance4.9 µH | Performance Rated Current8.3 A | Saturation Current @ 10%2.2 A | Saturation Current @ 30%6.5 A | DC Resistance14.5 mΩ | Self Resonant Frequency56 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 6.5 µH, 6.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance6.5 µH | Performance Rated Current6.6 A | Saturation Current @ 10%2 A | Saturation Current @ 30%6 A | DC Resistance21.5 mΩ | Self Resonant Frequency50 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 7.6 µH, 5.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance7.6 µH | Performance Rated Current5.5 A | Saturation Current @ 10%2.2 A | Saturation Current @ 30%4.8 A | DC Resistance28.2 mΩ | Self Resonant Frequency48 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 8.5 µH, 5.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance8.5 µH | Performance Rated Current5.3 A | Saturation Current @ 10%2 A | Saturation Current @ 30%4.5 A | DC Resistance30.5 mΩ | Self Resonant Frequency44 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 10 µH, 5.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance10 µH | Performance Rated Current5.3 A | Saturation Current @ 10%1.8 A | Saturation Current @ 30%4 A | DC Resistance33 mΩ | Self Resonant Frequency40 MHz | MaterialSuperflux |