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UC3825BDW from TI,Texas Instruments

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UC3825BDW

Manufacturer: TI

High Speed PWM Controller

Partnumber Manufacturer Quantity Availability
UC3825BDW TI 7753 In Stock

Description and Introduction

High Speed PWM Controller The UC3825BDW is a high-speed PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Supports various configurations including flyback, forward, push-pull, and full-bridge.  
- **Frequency Range:** Up to 1 MHz operation.  
- **Output Drive:** Dual totem-pole outputs (2A peak current).  
- **Duty Cycle Range:** 0% to 100% (adjustable).  
- **Input Voltage Range:** 8V to 35V (operating), 40V (absolute max).  
- **Error Amplifier:** High-gain bandwidth (5 MHz typical).  
- **Soft-Start:** Programmable soft-start feature.  
- **Protection Features:** Under-voltage lockout (UVLO), over-current protection, and shutdown capability.  
- **Package:** SOIC-16 (DW package).  

### **Descriptions:**  
The UC3825BDW is a high-performance pulse-width modulation (PWM) controller designed for power supply applications. It provides precise control with fast response times, making it suitable for high-frequency switching power supplies.  

### **Features:**  
- **High-Speed Operation:** Optimized for high-frequency switching.  
- **Precision Reference:** 5.1V ±1% bandgap reference.  
- **Synchronization Capability:** Can be synchronized to an external clock.  
- **Current Limiting:** Cycle-by-cycle current limiting.  
- **Low Startup Current:** Typically 1.1 mA.  
- **Temperature Range:** -40°C to 85°C (operating).  

This IC is commonly used in DC-DC converters, inverters, and other power management applications.

Application Scenarios & Design Considerations

High Speed PWM Controller
Partnumber Manufacturer Quantity Availability
UC3825BDW UNITRODE 27 In Stock

Description and Introduction

High Speed PWM Controller The UC3825BDW is a high-speed PWM controller manufactured by UNITRODE (now part of Texas Instruments).  

### **Specifications:**  
- **Topology:** Voltage-mode or current-mode control  
- **Operating Frequency:** Up to 1MHz  
- **Output Drive Current:** ±2A peak  
- **Supply Voltage (VCC):** 8V to 35V  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Soft-Start Capability:** Yes  
- **Under-Voltage Lockout (UVLO):** Adjustable  
- **Package:** SOIC-16 (DW)  

### **Descriptions:**  
The UC3825BDW is a pulse-width modulation (PWM) controller designed for high-frequency power supply applications. It provides precise control for switching power supplies with features like soft-start, adjustable dead-time, and high-speed switching capability.  

### **Features:**  
- High-speed PWM operation  
- Low startup current (<1mA)  
- Double-pulse suppression  
- Adjustable dead-time control  
- Synchronizable oscillator  
- Precision reference voltage (5.1V ±1%)  
- Current-limiting and shutdown functions  
- Compatible with voltage or current-mode topologies  

This information is based on UNITRODE's datasheet for the UC3825BDW.

Application Scenarios & Design Considerations

High Speed PWM Controller

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