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Analog Devices LT3745 | Demoboard DC1608A
LT3745 Demo Board I Three 16-Channel Buck RGB LED Drivers, Requires DC590B, 9V ≤ VIN ≤ 40V, VLED = 3.4V or 4.2V @ 50mA per Channel
Overview
| Topology | Buck Converter |
| Input voltage | 9-40 V |
| Output 1 | 3.4 V |
| Output 2 | 4.2 V |
| Output 3 | 4.2 V |
| IC revision | 2 |
Description
Demonstration circuit 1608A features the LT®3745, 16-channel 50mA LED driver with buck controller and serial interface. Each channel has an individually adjustable 12-bit (4096-step) grayscale PWM dimming control and a 6-bit (64-step) dot correction current adjustment. Both dimming control and current adjustment are accessible via a 30MHz cascadable serial data interface. Individual open/short LED and overtemperature flags are sent back during status read back.
Three LT3745’s are connected in series to control 16 RGB LEDs stuffed on the demo board. Each IC drives a separate color. The evaluation software installed in a host computer communicates with the DC1608A via the interface board DC590B, an USB serial controller.
The LT3745 data sheet gives a complete description of the part, its operation and application information. The datasheet must be read in conjunction with this quick start guide for working on or modifying the demo circuit 1608A.
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Size | Version | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWE-PD SMT Power Inductor, 15 µH, 2.25 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance15 µH | Performance Rated Current2.25 A | Saturation Current1.75 A | DC Resistance130 mΩ | Self Resonant Frequency26 MHz | Size7332 | VersionStandard | –Check availability |
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |