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UC3525BN from TI,Texas Instruments

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UC3525BN

Manufacturer: TI

Regulating Pulse Width Modulators

Partnumber Manufacturer Quantity Availability
UC3525BN TI 2500 In Stock

Description and Introduction

Regulating Pulse Width Modulators The UC3525BN is a pulse width modulation (PWM) controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** UC3525BN  
- **Type:** PWM Controller IC  
- **Package:** DIP-16 (Dual Inline Package)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Supply Voltage (Vcc):** 8V to 35V  
- **Output Current (Source/Sink):** 200mA (Peak)  
- **Switching Frequency Range:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100% (adjustable)  
- **Oscillator Frequency Range:** Adjustable via external components  

### **Descriptions:**  
The UC3525BN is a high-performance PWM controller designed for power supply and DC-DC converter applications. It provides precise control over switching regulators with features like adjustable dead-time, soft-start, and error amplification. The device is widely used in industrial, automotive, and telecom power systems.

### **Features:**  
- **Push-Pull Output Configuration:** Supports two totem-pole outputs for driving power MOSFETs or IGBTs.  
- **Adjustable Dead-Time Control:** Prevents shoot-through in half-bridge and full-bridge topologies.  
- **Soft-Start Function:** Gradually ramps up duty cycle to reduce inrush current.  
- **Error Amplifier:** High-gain op-amp for feedback loop control.  
- **Synchronization Capability:** Allows multiple controllers to sync to a master clock.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low supply conditions.  
- **Shutdown Function:** Immediate disable via external signal.  
- **Precision Reference Voltage:** 5.1V ±1% for stable regulation.  

This information is based on TI's official datasheet for the UC3525BN.

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