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TDA3681J from PHI,Philips

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TDA3681J

Manufacturer: PHI

Multiple voltage regulator with switch and ignition buffer

Partnumber Manufacturer Quantity Availability
TDA3681J PHI 18 In Stock

Description and Introduction

Multiple voltage regulator with switch and ignition buffer The TDA3681J is a monolithic integrated circuit manufactured by PHI (Philips). It is designed for use in automotive applications, specifically for power supply and voltage regulation in car radios and other in-vehicle electronic systems.

### **Specifications:**
- **Manufacturer:** PHI (Philips)
- **Package:** DIP (Dual In-line Package)
- **Operating Voltage Range:** Typically 8V to 18V
- **Output Current:** Up to 1.5A (depending on configuration)
- **Number of Outputs:** Multiple regulated outputs (exact number depends on datasheet)
- **Protection Features:** Overvoltage protection, thermal shutdown, short-circuit protection
- **Operating Temperature Range:** -40°C to +85°C (suitable for automotive environments)

### **Descriptions:**
- The TDA3681J is a voltage regulator and power management IC designed for automotive electronics.
- It provides stable power supply outputs for car radio systems, ensuring reliable operation under varying input voltages.
- The IC integrates multiple protection mechanisms to safeguard against electrical faults.

### **Features:**
- **Multiple Voltage Outputs:** Provides regulated voltages for different sections of a car radio (e.g., +5V, +8V, +12V).
- **High Efficiency:** Optimized for low power dissipation.
- **Robust Protection:** Includes thermal shutdown, overvoltage, and short-circuit protection.
- **Wide Input Voltage Range:** Supports typical automotive battery fluctuations.
- **Low Standby Current:** Suitable for energy-efficient applications.

For exact pin configurations and detailed electrical characteristics, refer to the official PHI (Philips) datasheet.

Application Scenarios & Design Considerations

Multiple voltage regulator with switch and ignition buffer

Alternative Part Number

  • TDA3681AJ --: Same TDA3681 voltage regulator family from the original Philips semiconductor business (now NXP), with the 'A' variant offering improved specifications and direct functional compatibility.
  • L4970A --: High-current step-down switching regulator with comparable input voltage range and output current capability, suitable as a functional substitute in similar power supply designs.
  • LM2679 --: Widely available high-current buck regulator with similar voltage and current ratings, offering a well-documented alternative for designs needing a drop-in style power solution.

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