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TL2845P from TI,Texas Instruments

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TL2845P

Manufacturer: TI

Current-Mode PWM Controller

Partnumber Manufacturer Quantity Availability
TL2845P TI 12 In Stock

Description and Introduction

Current-Mode PWM Controller The TL2845P is a pulse-width modulation (PWM) controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 8V to 30V  
- **Operating Frequency:** Up to 500 kHz  
- **Output Current (Source/Sink):** 200 mA (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 3 MHz  
- **Reference Voltage:** 5.1V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions:**
- The TL2845P is a high-performance current-mode PWM controller designed for DC-DC converter applications.  
- It features a trimmed oscillator for precise duty cycle control and includes a high-gain error amplifier for improved regulation.  
- The device supports both voltage and current-mode control, making it suitable for a wide range of power supply designs.  

### **Features:**
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Pulse-by-Pulse Current Limiting:** Protects against overload conditions.  
- **Sync Capability:** Allows synchronization with an external clock.  
- **Low Startup Current:** Typically 0.5 mA for efficient power-up.  

The TL2845P is commonly used in switch-mode power supplies (SMPS), offline converters, and industrial power systems.

Application Scenarios & Design Considerations

Current-Mode PWM Controller

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