The **AM3T-4818S-RZ** is a high-performance DC-DC converter manufactured by **Aimtec**. It is designed to convert a wide range of input DC voltages into a regulated 18V output. --- ## 1. Core Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage Range** | 18V to 72V DC (4:1 Ultra-wide input) | | **Output Voltage** | 18V DC | | **Output Current** | 167 mA (Max) | | **Power Rating** | 3 Watts | | **Efficiency** | ~82% | | **Isolation Voltage** | 1500 VDC | | **Package Style** | DIP24 (Plastic case) | --- ## 2. Key Features and Internal Components The "RZ" suffix indicates specific design characteristics related to its form factor and protection levels. ### A. Regulation and Protection * **Regulated Output:** Unlike unregulated converters, the AM3T-4818S-RZ maintains a steady 18V output even if the input voltage fluctuates between 18V and 72V. * **Short Circuit Protection:** It features continuous short-circuit protection with auto-recovery, preventing the component from burning out during a fault. * **Input Filter:** Includes an internal Pi-network filter to reduce electromagnetic interference (EMI). ### B. Isolation The device provides **1500 VDC isolation** between the input and the output. This is crucial for: * Breaking ground loops. * Protecting sensitive downstream components from high-voltage spikes on the input rail. ### C. Thermal Performance * **Operating Temperature:** -40°C to +85°C. * **Cooling:** Uses free-air convection (no fans required). --- ## 3. Pinout Configuration (DIP24) | Pin Number | Function | Description | | :--- | :--- | :--- | | 2, 3 | -Vin | Negative Input Voltage | | 9 | NC | No Connection | | 11 | NC | No Connection | | 14 | +Vout | Positive Output Voltage | | 16 | -Vout | Negative Output Voltage | | 22, 23 | +Vin | Positive Input Voltage | --- ## 4. Typical Applications 1. **Industrial Controls:** Powering sensors or actuators from a 48V bus. 2. **Telecommunications:** Converting standard 48V telecom power to 18V for local circuitry. 3. **Data Acquisition:** Providing isolated power to analog-to-digital converters to ensure signal integrity.