IC Phoenix logo

Home ›  U  › U7 > UC3845DTR

UC3845DTR from TEXAS

Fast Delivery, Competitive Price @IC-phoenix

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

0.000ms

UC3845DTR

Manufacturer: TEXAS

Current-Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC3845DTR TEXAS 1861 In Stock

Description and Introduction

Current-Mode PWM Controller The UC3845DTR is a high-performance current-mode PWM controller manufactured by Texas Instruments.  

### **Specifications:**  
- **Input Voltage (VCC):** 8V to 30V  
- **Output Current (Source/Sink):** 200mA / 200mA  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC3845DTR is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-performance DC-DC converter applications. It features current-mode control for improved loop response and simplified compensation. The device includes an oscillator, error amplifier, current sensing comparator, and a high-current totem-pole output for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Control** for improved transient response  
- **Automatic Feed-Forward Compensation**  
- **Latching PWM** for cycle-by-cycle current limiting  
- **Undervoltage Lockout (UVLO)** with hysteresis  
- **Internal Trimmed Bandgap Reference** (5V ±1%)  
- **High-Current Totem-Pole Output** (200mA peak)  
- **Low Startup Current** (<1mA)  
- **SOIC-8 Package** for space-constrained applications  

The UC3845DTR is commonly used in power supply designs, including flyback, forward, and boost converters.

Partnumber Manufacturer Quantity Availability
UC3845DTR TI 1933 In Stock

Description and Introduction

Current-Mode PWM Controller The UC3845DTR is a current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 8.5V to 30V  
- **Output Voltage:** Adjustable via external components  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle:** 0% to 100% (adjustable)  
- **Output Current (Source/Sink):** 1A (peak)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC3845DTR is a high-performance fixed-frequency current-mode PWM controller. It is designed for DC-DC converter applications, providing precise regulation and protection features. It includes an oscillator, error amplifier, current sensing comparator, and a totem-pole output stage.  

### **Features:**  
- Adjustable switching frequency  
- Under-voltage lockout (UVLO)  
- Current-mode operation for improved transient response  
- Latching PWM for cycle-by-cycle current limiting  
- High-current totem-pole output  
- Low startup and operating current  
- Internal trimmed bandgap reference  

This device is commonly used in power supplies, battery chargers, and other DC-DC conversion applications.

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