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TEA5170 from ST,ST Microelectronics

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TEA5170

Manufacturer: ST

SWITCH MODE POWER SUPPLY SECONDARY CIRCUIT

Partnumber Manufacturer Quantity Availability
TEA5170 ST 1000 In Stock

Description and Introduction

SWITCH MODE POWER SUPPLY SECONDARY CIRCUIT The TEA5170 is a switching regulator controller manufactured by STMicroelectronics. Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 8V to 40V  
- **Switching Frequency:** Adjustable up to 500 kHz  
- **Output Voltage:** Adjustable via external components  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** DIP-16 or SO-16  

### **Descriptions:**  
- The TEA5170 is a high-performance switching regulator controller designed for DC-DC converter applications.  
- It operates in a flyback or forward topology and is commonly used in power supply designs.  
- The device includes an internal oscillator, error amplifier, and PWM comparator for precise regulation.  

### **Features:**  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Current Limiting:** Protects against overload conditions.  
- **Adjustable Frequency:** Allows optimization for efficiency and component size.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the input voltage range.  
- **High Efficiency:** Suitable for power supply applications requiring stable output.  

This information is based on the manufacturer's datasheet for the TEA5170.

Application Scenarios & Design Considerations

SWITCH MODE POWER SUPPLY SECONDARY CIRCUIT

Alternative Part Number

  • UC3842 --: Industry-standard current-mode PWM controller widely used in SMPS designs; functionally similar control IC with broad availability and low cost.
  • SG3524 --: Classic PWM switching regulator controller offering similar regulation and drive functions, well documented and easy to source as a replacement in power supply circuits.
  • TL494 --: Versatile fixed-frequency PWM control IC commonly used in switch-mode power supplies; provides comparable control loop and output drive capability for retrofit designs.

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