### Overview of the LED6001TR The **LED6001TR** is a high-performance, peak current mode LED driver designed by STMicroelectronics. It is specifically engineered to operate as a boost, buck-boost, or SEPIC converter, providing a constant current output for high-brightness LED strings. --- ### Technical Specifications | Parameter | Value / Range | | :--- | :--- | | **Input Voltage Range** | 5.5V to 36V | | **Output Voltage** | Up to 60V | | **Switching Frequency** | Programmable (up to 1 MHz) | | **Dimming Method** | PWM and Analog | | **Package** | HTSSOP16 (with exposed pad) | | **Efficiency** | Typically > 92% | --- ### Key Internal Components & Features 1. **Current Mode Control Loop**: The device uses peak current mode control to ensure fast transient response and simplify the compensation network. This is critical for maintaining stable LED current despite input voltage fluctuations. 2. **Internal LDO**: It features an internal Low Dropout regulator that provides a stable 5V supply for internal circuitry and the gate driver, reducing the need for external power components. 3. **Dimming Circuitry**: * **PWM Dimming**: High-speed dedicated pin for pulsed light control (no color shift). * **Analog Dimming**: Allows brightness adjustment by varying a DC voltage level. 4. **Protection Suite**: The LED6001TR is designed for high reliability with several built-in safety mechanisms: * **Overvoltage Protection (OVP)**: Adjustable via external resistor divider. * **Overcurrent Protection (OCP)**: Protects against shorted LEDs. * **Thermal Shutdown**: Disables the IC if internal temperatures exceed safety limits. --- ### Typical Application Circuit (Boost Configuration) To implement this part, the following external components are essential: ```markdown 1. Inductor (L): Stores energy during the switch-on phase. 2. Power MOSFET: Controlled by the LED6001TR 'GATE' pin to toggle the current. 3. Sense Resistor (Rsense): Placed in series with LEDs to provide current feedback. 4. Schottky Diode: Allows current to flow to the output when the MOSFET is off. 5. Compensation Network (Rc, Cc): Connected to the COMP pin to stabilize the feedback loop. ``` --- ### Pin Descriptions (Selected) | Pin Name | Function | | :--- | :--- | | **VIN** | Power supply input. | | **GATE** | Drive signal for the external N-channel MOSFET. | | **FB** | Feedback pin for LED current sensing (typical 200mV reference). | | **DIM** | Input for PWM dimming signal. | | **FAULT** | Open-drain output to signal error conditions. |