The part number **CWCBLPM1.W1-MXMZ-S1S2** refers to a high-power LED from the **OSRAM OSTAR Projection Compact** series, manufactured by ams OSRAM. These LEDs are specifically designed for high-lumen output in small spaces, such as pico projectors and stage lighting. --- ### 1. Technical Specifications The following table breaks down the core electrical and optical characteristics of this specific component: | Parameter | Specification | | :--- | :--- | | **Color** | Ultra White (Cool White) | | **Luminous Flux** | 180 lm to 280 lm (depending on binning) | | **Forward Current ($I_f$)** | 700 mA (Typical) to 5000 mA (Maximum) | | **Forward Voltage ($V_f$)** | 2.8 V to 3.5 V | | **Color Temperature** | ~6000K - 7000K | | **Viewing Angle** | 120° (Lambertian Emitter) | | **Package Size** | 3.1 mm x 4.2 mm x 0.6 mm | --- ### 2. Part Number Breakdown The alphanumeric code describes the specific binning and physical attributes: * **CW**: Color Code (Ultra White). * **CBLPM1.W1**: The base family (OSRAM OSTAR Projection Compact). * **MXMZ**: Luminous Flux (Brightness) bins. * **S1S2**: Chromaticity (Color) coordinate bins, indicating a specific white point on the CIE diagram. --- ### 3. Key Electronic Features * **High Current Density:** Unlike standard lighting LEDs, this chip is designed to handle very high currents (up to 5A) to maximize "optical étendue" for projection systems. * **Common Cathode/Isolated Thermal Pad:** The package is designed with an electrically isolated thermal pad, allowing for efficient heat dissipation directly to a heatsink without shorting the circuit. * **UX:3 Chip Technology:** Utilizes OSRAM’s proprietary ThinGaN technology, which ensures that light is emitted mostly from the top surface, making it ideal for use with external optics and lenses. --- ### 4. Implementation Example When designing a driver for this LED, constant current control is mandatory. Below is a conceptual representation of how to interface it with a microcontroller (MCU) and a buck converter. ```cpp // Pseudocode for PWM Dimming Control const int ledPin = 9; // PWM pin to LED Driver int targetBrightness = 255; // 0 to 255 void setup() { pinMode(ledPin, OUTPUT); } void loop() { // Use PWM to control the enable pin of a Constant Current Driver analogWrite(ledPin, targetBrightness); } ``` ---