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TL2845BDR from TI,Texas Instruments

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TL2845BDR

Manufacturer: TI

High-Performance Current-Mode PWM Controller 14-SOIC -40 to 85

Partnumber Manufacturer Quantity Availability
TL2845BDR TI 310 In Stock

Description and Introduction

High-Performance Current-Mode PWM Controller 14-SOIC -40 to 85 The TL2845BDR is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range (VCC):** 8.5V to 30V  
- **Switching Frequency:** Up to 500 kHz (adjustable with external components)  
- **Output Duty Cycle:** 0% to 50% (maximum)  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package:** SOIC-8 (D)  
- **Current Sensing:** Adjustable cycle-by-cycle current limiting  
- **Start-Up Current:** Typically 0.5 mA  
- **Error Amplifier Bandwidth:** 1 MHz  
- **UVLO (Undervoltage Lockout):** 8V (on), 7.9V (off)  

### **Descriptions and Features:**  
- Designed for offline and DC-DC converter applications.  
- Features include pulse-by-pulse current limiting, undervoltage lockout (UVLO), and a trimmed oscillator for precise duty-cycle control.  
- Includes a high-gain error amplifier, a current-sensing comparator, and a totem-pole output stage for driving power MOSFETs.  
- Provides soft-start functionality for controlled startup.  
- Low-power standby mode with reduced operating current.  
- Suitable for flyback, forward, and boost converter designs.  

The TL2845BDR is commonly used in power supply applications requiring high efficiency and precise regulation.

Application Scenarios & Design Considerations

High-Performance Current-Mode PWM Controller 14-SOIC -40 to 85

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