IC Phoenix logo

Home ›  T  › T39 > TL2845

TL2845 from TI,Texas Instruments

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

TL2845

Manufacturer: TI

Current-Mode PWM Controller

Partnumber Manufacturer Quantity Availability
TL2845 TI 4 In Stock

Description and Introduction

Current-Mode PWM Controller The TL2845 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range (VCC):** 8.5V to 30V  
- **Operating Frequency:** Up to 500 kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Output Current (Source/Sink):** 1A (peak)  
- **Error Amplifier Bandwidth:** 3 MHz  
- **Reference Voltage Accuracy:** ±1% (4.9V to 5.1V)  
- **Start-Up Current:** <1 mA  
- **Operating Temperature Range:** -40°C to 85°C (TL2845B), -40°C to 125°C (TL2845)  

### **Descriptions:**  
The TL2845 is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-performance DC-DC power supplies. It operates in current-mode control, providing improved loop response and simplified compensation. The device includes an error amplifier, a precision voltage reference, a PWM comparator, and a high-current totem-pole output driver.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Adjustable Switching Frequency:** Up to 500 kHz.  
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Programmable Soft-Start:** Reduces inrush current during start-up.  
- **Error Amplifier with High Gain-Bandwidth:** Improves regulation accuracy.  
- **Synchronizable Oscillator:** Allows synchronization with an external clock.  
- **Totem-Pole Output:** Capable of driving power MOSFETs directly.  
- **Low Power Consumption:** Optimized for efficiency.  

The TL2845 is commonly used in switch-mode power supplies (SMPS), DC-DC converters, and other power management applications.  

(Note: Specifications and features are based on TI's official datasheet.)

Application Scenarios & Design Considerations

Current-Mode PWM Controller

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips