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TL3845P

Current-Mode PWM Controller

Partnumber Manufacturer Quantity Availability
TL3845P 2 In Stock

Description and Introduction

Current-Mode PWM Controller The TL3845P is a high-performance current-mode PWM controller manufactured by Texas Instruments.  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 8V to 30V (operating range)  
- **Output Frequency:** Adjustable up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Peak Output Current:** ±1A (source/sink)  
- **Reference Voltage:** 5V (precision internal reference)  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package:** 8-Pin DIP (PDIP)  

### **Descriptions:**  
The TL3845P is designed for DC-DC converter applications and provides precise control for switching power supplies. It features an oscillator, error amplifier, current sensing comparator, and a totem-pole output stage for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Programmable Oscillator:** Allows frequency adjustment with external components.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Error Amplifier:** High-gain bandwidth for accurate feedback control.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  

This device is commonly used in power supply designs, including flyback, forward, and boost converters.

Application Scenarios & Design Considerations

Current-Mode PWM Controller

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