Overview
The ALED6001TR, produced by STMicroelectronics, is an automotive-grade (AECQ100 compliant) LED driver designed to drive one string of high-brightness LEDs. It combines a boost controller and high-side current sensing circuitry, making it suitable for various topologies such as boost, SEPIC, and floating load buck-boost. The device supports PWM dimming through an external MOSFET and offers high precision current sensing with ±4% accuracy over the entire temperature range and production spread. It also includes several protection features, including thermal shutdown, output overvoltage protection, and LED overcurrent protection.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 5.5 V to 36 V |
| Output Voltage | Up to 60 V |
| Switching Frequency | Adjustable (100 kHz to 1 MHz) |
| Shutdown Current | < 10 μA |
| Internal LDOs | +5 V for gate driver supply, +3.3 V for device supply |
| Current Sensing Accuracy | ± 4% |
| Package | HTSSOP16 |
| Grade | Automotive |
| RoHS Compliance | Ecopack2 |
| Operating Temperature Range | -40°C to 150°C |
Key Features
- AECQ100 qualification
- Switching controller section with fixed frequency peak current mode control
- External synchronization for multi-device applications
- High performance external MOSFET driver
- Cycle-by-cycle external MOSFET overcurrent protection (OCP)
- Fixed internal soft-start
- Programmable output overvoltage protection (OVP)
- Support for boost, buck-boost, and SEPIC topologies
- Thermal shutdown with autorestart
- Output short-circuit detection
- High-side output current sensing circuitry
- PWM dimming with auxiliary series switch
- Analog dimming capability
Applications
The ALED6001TR is primarily used in automotive lighting applications, including daytime running lights (DTRL), front lights, and interior/exterior lights. Its robust design and comprehensive protection features make it suitable for demanding automotive environments.
Q & A
- What is the input voltage range of the ALED6001TR?
The input voltage range is from 5.5 V to 36 V. - What are the supported topologies for the ALED6001TR?
The device supports boost, SEPIC, and floating load buck-boost topologies. - How does the ALED6001TR achieve PWM dimming?
PWM dimming is achieved through an external MOSFET in series with the LED string, directly driven by a dedicated pin. - What is the accuracy of the current sensing circuitry?
The current sensing circuitry has an accuracy of ±4% over the entire temperature range and production spread. - Does the ALED6001TR have thermal protection?
Yes, it includes thermal shutdown with autorestart. - What is the package type of the ALED6001TR?
The package type is HTSSOP16. - Is the ALED6001TR RoHS compliant?
Yes, it is RoHS compliant with an Ecopack2 grade. - What are the internal LDOs provided by the ALED6001TR?
The device includes internal +5 V and +3.3 V LDOs. - Can the ALED6001TR be used for analog dimming?
Yes, it supports analog dimming through a microcontroller. - What kind of fault protection does the ALED6001TR offer?
The device offers protection against device overtemperature, output overvoltage, and LED overcurrent.
