The **88C26-AF5-R** is a specific integrated circuit, most commonly identified as a **Low Dropout (LDO) Voltage Regulator**. It is widely used in power management circuits where a stable output voltage is required from a slightly higher input voltage. Below is a detailed breakdown of its specifications and characteristics. ### 1. General Specifications The part number follows a specific nomenclature used by manufacturers (typically Unisonic Technologies - UTC). | Parameter | Description | | :--- | :--- | | **Component Type** | Linear Voltage Regulator (LDO) | | **Output Type** | Fixed Output | | **Package Type** | SOT-25 / SOT-23-5 (indicated by "AF5") | | **Pin Count** | 5 Pins | | **RoHS Status** | Halogen-free and Lead-free (indicated by "-R") | --- ### 2. Key Technical Features * **Low Dropout Voltage:** It can maintain a stable output even when the input voltage is very close to the target output voltage. * **Quiescent Current:** Designed for low power consumption, making it suitable for battery-operated devices. * **Protection Circuits:** Usually includes internal thermal shutdown and current limiting to prevent damage during a short circuit or overheating. * **Enable Pin:** Often features a "Control" or "Enable" pin to turn the regulator on or off electronically to save power. --- ### 3. Pin Configuration (Typical SOT-25) In most 88C26-AF5-R configurations, the 5-pin layout is structured as follows: | Pin Number | Function | Description | | :--- | :--- | :--- | | 1 | **VIN** | Input Voltage Supply | | 2 | **GND** | Ground | | 3 | **CE / EN** | Chip Enable (Active High) | | 4 | **NC / BP** | No Connection or Bypass Capacitor (for noise reduction) | | 5 | **VOUT** | Regulated Output Voltage | --- ### 4. Application Areas Because of its small footprint and efficiency, it is commonly found in: 1. **Mobile Devices:** Smartphones, tablets, and handheld electronics. 2. **Portable Medical Equipment:** Devices requiring stable, low-noise power. 3. **Wireless Modules:** Powering Bluetooth or Wi-Fi chips. 4. **Battery Management:** Acts as a post-regulator for Li-ion battery circuits. --- ### 5. Identification Code Breakdown * **88C26**: The series and specific voltage variant (The "26" usually indicates a **2.6V** output). * **AF5**: Refers to the **SOT-25** package style. * **R**: Indicates the packing method (**Tape and Reel**).