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TL3845BDR from TI,Texas Instruments

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TL3845BDR

Manufacturer: TI

High-Performance Current-Mode PWM Controller 14-SOIC 0 to 70

Partnumber Manufacturer Quantity Availability
TL3845BDR TI 155 In Stock

Description and Introduction

High-Performance Current-Mode PWM Controller 14-SOIC 0 to 70 The TL3845BDR is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are the specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** TL3845BDR  
- **Package:** SOIC-8  
- **Topology:** Current-Mode PWM Controller  
- **Input Voltage Range (VCC):** 7.6V to 30V (operating)  
- **Output Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100% (adjustable)  
- **Output Current (Source/Sink):** 1A (peak)  
- **Error Amplifier Gain Bandwidth:** 1MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **UVLO (Undervoltage Lockout):** 7.6V (on), 7.2V (off)  

### **Descriptions:**  
The TL3845BDR is a fixed-frequency pulse-width modulation (PWM) controller designed for DC-DC converter and power supply applications. It operates in current-mode control, providing improved loop response and simplified compensation. The device includes a trimmed oscillator, a high-gain error amplifier, a current-sensing comparator, and a totem-pole output stage for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Control:** Enhances line and load regulation.  
- **Adjustable Oscillator Frequency:** Set via external resistor and capacitor.  
- **Precision Reference Voltage:** 5V (±1%) for stable regulation.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Pulse-by-Pulse Current Limiting:** Protects against overcurrent conditions.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Low Startup Current (0.5mA typical):** Improves efficiency.  

This information is based on TI's official datasheet and product documentation.

Application Scenarios & Design Considerations

High-Performance Current-Mode PWM Controller 14-SOIC 0 to 70

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