Overview
The LED6001TR, produced by STMicroelectronics, is a PWM-dimmable single-channel LED driver that integrates a boost controller and high-side current sensing circuitry. This device is designed to drive one string of high-brightness LEDs and supports multiple topologies such as boost, SEPIC, and floating load buck-boost. The LED6001TR allows for precise control over LED brightness through PWM dimming and analog dimming, with a 10:1 dimming ratio. It features enhanced PWM dimming capabilities using a MOSFET in series with the LED string, driven by a dedicated pin. The device includes robust protection mechanisms, including thermal shutdown, output overvoltage protection, and LED overcurrent protection, ensuring reliable operation under various conditions.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Input Voltage Range | 5.5 | - | 36 | V |
| Shutdown Current (ISHDN) | 1 | - | 10 | μA |
| Switching Frequency | 100 kHz | - | 1 MHz | - |
| Output Voltage | - | - | 60 | V |
| Output Current Reference Accuracy | - | ±4% | - | - |
| Operating Temperature Range | -40 | - | 125 | °C |
| Thermal Shutdown Threshold | 150 | - | 175 | °C |
Key Features
- Switching controller section with adjustable switching frequency (100 kHz to 1 MHz) and external synchronization for multi-device applications.
- Internal +5 V LDO for gate driver supply and internal +3.3 V LDO for device supply.
- High-side output current sensing circuitry with ± 4% output current reference accuracy.
- PWM dimming with auxiliary series switch and analog dimming (10:1 ratio).
- Thermal shutdown with autorestart, output short-circuit detection, and fault output (open-drain) for indicating faulty conditions.
- Support for boost, buck-boost, and SEPIC topologies.
- High performance external MOSFET driver and cycle-by-cycle external MOSFET overcurrent protection (OCP).
- Programmable output overvoltage protection (OVP) and sensing resistor failure protection.
Applications
- Indoor and architectural LED lighting.
- Emergency LED lighting.
- Off-grid LED street lighting.
- White goods.
- Gaming and gambling machines.
Q & A
- What is the input voltage range of the LED6001TR?
The input voltage range is from 5.5 V to 36 V.
- What are the supported topologies by the LED6001TR?
The device supports boost, SEPIC, and floating load buck-boost topologies.
- How can the brightness of the LEDs be controlled using the LED6001TR?
The brightness can be controlled through PWM dimming and analog dimming (10:1 ratio) using two independent pins.
- What protection mechanisms are included in the LED6001TR?
The device includes thermal shutdown, output overvoltage protection, LED overcurrent protection, and sensing resistor failure protection.
- What is the accuracy of the output current reference in the LED6001TR?
The output current reference accuracy is ± 4% over the whole temperature range and production spread.
- What is the maximum output voltage of the LED6001TR?
The maximum output voltage is up to 60 V.
- How does the fault output (XFAULT) work in the LED6001TR?
The fault output (XFAULT) is an open-drain output that informs the host system about faulty conditions such as device overtemperature, output overvoltage, and LED overcurrent.
- What are the typical applications of the LED6001TR?
Typical applications include indoor and architectural LED lighting, emergency LED lighting, off-grid LED street lighting, white goods, and gaming/gambling machines.
- What is the thermal shutdown threshold of the LED6001TR?
The thermal shutdown threshold is between 150°C and 175°C.
- How does the high-side current sensing circuitry work in the LED6001TR?
The high-side current sensing circuitry, in combination with a P-channel MOSFET, provides effective protection and allows for precise LED current regulation.
