The **BA03CC0FP-E2** is a high-precision, low dropout (LDO) voltage regulator manufactured by **ROHM Semiconductor**. It is widely used in industrial and consumer electronics to provide a stable 3V output from a higher input voltage. --- ## 1. Technical Specifications The following table outlines the core electrical characteristics of the BA03CC0FP-E2: | Parameter | Specification | | :--- | :--- | | **Output Voltage** | 3.0 V (Fixed) | | **Input Voltage Range** | 4.0 V to 25.0 V | | **Output Current** | 1.0 A (Maximum) | | **Dropout Voltage** | 0.5 V (Typical at 500mA) | | **Output Voltage Accuracy** | ±2% | | **Operating Temperature** | -40°C to +85°C | | **Package Type** | TO-252-3 (DPAK) | --- ## 2. Key Features * **Built-in Overcurrent Protection (OCP):** Protects the IC from damage during current overloads or short circuits. * **Thermal Shutdown (TSD):** Automatically shuts down the device if the junction temperature exceeds safe limits (typically around 175°C). * **Low Quiescent Current:** Efficient power consumption, making it suitable for energy-sensitive applications. * **High Ripple Rejection:** Provides a clean DC output by filtering out noise from the input power supply. --- ## 3. Pin Configuration The device uses a standard **TO-252 (DPAK)** surface-mount package with three functional terminals: 1. **Pin 1 (VCC):** Input supply voltage. 2. **Pin 2 (GND):** Ground (The large thermal pad is also connected to Ground). 3. **Pin 3 (OUT):** Regulated 3.0V output. --- ## 4. Application Circuit Example To ensure stability, LDOs require external capacitors. Below is the typical implementation logic: ```c // Standard Implementation Logic Input (4V - 25V) --> [ 0.33uF Capacitor ] --> (VCC) [BA03CC0FP] (OUT) --> [ 22uF Capacitor ] --> Output (3V) | (GND) ``` ### Components Required: * **Input Capacitor ($C_{IN}$):** A 0.33μF ceramic capacitor is recommended to prevent oscillation and handle input line noise. * **Output Capacitor ($C_{OUT}$):** A 22μF capacitor is required to maintain the stability of the feedback loop. --- ## 5. Typical Applications * **Microcontrollers:** Powering 3V MCUs and DSPs. * **Communication Equipment:** Stable power for RF modules and sensors. * **Consumer Electronics:** Used in TVs, Blu-ray players, and home appliances. * **Industrial:** PLCs and automation control boards.