Product overview
Description
The AEK-LED-21DISM1 LED driver board is designed for high brightness automotive LED front lighting applications according to the AutoDevKit initiative. It can control four LED strings through two embedded L99LD21 flexible LED drivers with high efficiency boost controller and two embedded buck converters.
The boost controller section in each L99LD21 LED driver integrates a high current gate driver for an external N-channel MOSFET and delivers a constant output voltage to two integrated buck converters. The boost controller of two devices can be stacked to allow dual phase operation for high power applications, with an interleaving pattern for improved input current ripple and current load sharing. The buck converter integrates an N-channel MOSFET driven by a bootstrap circuit.
The board uses SPI communication with an external microcontroller via a 12-pin male connector, and a special Limp Home Mode implemented in the L99LD21 driver ensures that active communication with the MCU is regularly monitored. You can use the AutoDevKit library extension for the SPC5-Studio development environment to install board firmware drivers that are immediately compatible with SPC5-family MCUs.
The overall package is designed to address automotive lighting applications, including high beams and low beams, daytime running lights, turn indicators, position lights, side markers and fog lights.
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All features
- Two embedded L99LD21 high power LED drivers able to supply four independent channels
- Output current up to 1.69 A each channel
- Input operating voltage range from 5.5 V to 24 V
- Programmable via SPI, allowing accurate LED current setting
- Protections and diagnostics for output short-circuit and open-load, overtemperature, and battery undervoltage.
- Automotive Limp-Home Mode support
- Board size: 81 x 100 mm. Maximum components height: 11 mm
- WEEE and RoHS compliant
- All ST components are qualified Automotive grade
- Board designed according to the AutoDevKit initiative
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All resources
| Resource title | Version | Latest update |
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Board Manufacturing Specifications (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 30 Jul 2019 | 30 Jul 2019 |
Bill of Materials (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 30 Jul 2019 | 30 Jul 2019 |
Schematic Pack (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 30 Jul 2019 | 30 Jul 2019 |
Quality and Reliability
| Part Number | Marketing Status | RoHS Compliance Grade | WEEE Compliant | Material Declaration** |
|---|---|---|---|---|
| AEK-LED-21DISM1 | Active | Ecopack2 | Yes | |
AEK-LED-21DISM1
Package:
Ecopack2Material Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Supplier | Core Product | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AEK-LED-21DISM1 | | | distributors No availability of distributors reported, please contact our sales office |
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AEK-LED-21DISM1 Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors