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Overview
| Topology | Buck Converter |
| Input voltage | 7-30 V |
| Switching frequency | 270-330 kHz |
| Output 1 | 6.05 V / 12 A |
| IC revision | A |
Description
Demonstration circuit 1930A is a high current synchronous inverting buck-boost LED driver featuring the LT®3744. The unique drive stage used on the LT3744 allows the anodes of three LEDs to be connected together for better heat sinking in both the step-down configuration and the inverting buck-boost configuration. The pros and cons of each configuration can be found in the data sheet. This demonstration circuit 1930A is for customers to test the inverting buck-boost configuration. The step-down configuration is shown in a separate demonstration circuit DC2339A.
Features
- Ideal for Driving Up to 40A LEDs
- Up to 3000:1 PWM Dimming
- 20:1 Analog Dimming
- ±3% Current Regulation Accuracy
- ±3% Voltage Regulation Accuracy
- Unique Inverting Buck-Boost Topology AllowsGrounded Heat Sink to Be Used for RGB LEDs
- 3.3V to 36V Input Voltage Range
- Peak Current Mode with DC LED Current Sensing
- Open and Shorted LED Protection and Fault Reporting
- Floating LED Driver Allows Single Power Solution
- Drive Multicolor LEDs or Single LED with ThreeDifferent Regulated Currents
- Thermally Enhanced 5mm × 6mm QFN 36-LeadPackage
Typical applications
- LED Driver for DLP Projectors / Heads-Up Displays / High Power LED
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (mm) | f (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 702935000 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SNSR Self-Retaining Spacer | 12.7 | 4.8 | – | – | – | – | – | – | PA66 | |
 | 744355182 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCI SMT Flat Wire High Current Inductor | 13 | – | 0.82 | 44.5 | 15 | 35 | 0.9 | 72 | WE-PERM |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 702935000 | SPEC | – |
| 744355182 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (mm) | f (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | Samples |
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