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Overview
| Topology | Buck Converter |
| Switching frequency | 200-2000 kHz |
Description
It is an LT Journal, Synchronous, Low EMI LED DriverFeatures Integrated Switches andInternal PWM Dimming
Features
±2% LED Current Regulation±2% Output Voltage Regulation5000:1 PWM Dimming at 100Hz128:1 Internal PWM DimmingSpread-Spectrum Frequency ModulationSilent Switcher® Architecture for Low EMIOperates in Boost, Buck Mode and Buck-Boost Mode2.8V to 36V Input Voltage RangeUp to 34V LED String Voltage2A, 40V Internal Switches200kHz to 2MHz with SYNC FunctionAnalog or Duty Cycle LED Current ControlOpen/Short LED Protection and Fault IndicationThermally Enhanced 28-Pin (4mm × 5mm) QFN
Typical applications
- Machine Vision
- Automotive and Industrial Lighting
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT (A) | Size | Version | ISAT,10% (A) | ISAT,30% (A) | Mount | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (A) | RDC max. (mΩ) | Type | L1 (µH) | L2 (µH) | IR (A) | ISAT (A) | RDC1 typ (Ω) | RDC2 typ (Ω) | RDC1 max (Ω) | RDC2 max (Ω) | fres (MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74437324047 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LHMI SMT Power Inductor | 4.7 | 2.95 | – | 4020 | – | 2.45 | 5.4 | SMT | – | – | – | – | 105 | – | – | – | – | – | – | – | – | – | 31 | ||
 | 74477710 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | 10 | 3.55 | 2.6 | 7345 | Standard | 2.6 | 3.2 | SMT | – | – | – | – | 49 | – | – | – | – | – | – | – | – | – | 26 | ||
 | 744877100 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-DD SMT Shielded Coupled Inductor | 10 | – | 2.8 | 7345 | – | – | – | – | – | – | – | 1.1 | 120 | Straight | 10 | 10 | 1.1 | 2.8 | 0.11 | 0.11 | 0.12 | 0.12 | 27 | ||
 | 7427920415 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | 0805 | SMT | – | – | SMT | 600 | 660 | 150 MHz | 1.5 | 300 | Wide Band | – | – | 0.5 | – | – | – | – | – | – | ||
| 742792040 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | 0805 | SMT | – | – | SMT | 600 | 700 | 150 MHz | 2 | 150 | High Current | 52000000 | – | 1.5 | – | – | – | – | – | – | ||
| 742792097 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | 0805 | SMT | – | – | SMT | 1500 | 1800 | 70 MHz | 1 | 300 | High Current | – | – | 0.7 | – | – | – | – | – | – | ||
| 750316134 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Power Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74437324047 | SPEC | |
| 74477710 | SPEC | |
| 744877100 | SPEC | |
| 7427920415 | SPEC | |
| 742792040 | SPEC | |
| 742792097 | SPEC | |
| 750316134 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT (A) | Size | Version | ISAT,10% (A) | ISAT,30% (A) | Mount | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (A) | RDC max. (mΩ) | Type | L1 (µH) | L2 (µH) | IR (A) | ISAT (A) | RDC1 typ (Ω) | RDC2 typ (Ω) | RDC1 max (Ω) | RDC2 max (Ω) | fres (MHz) | Samples |
|---|