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UC3825BDW from UNITRODE

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15.625ms

UC3825BDW

Manufacturer: UNITRODE

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.

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.

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