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UCC3973PWTRG4 from TI/BB,Texas Instruments

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15.625ms

UCC3973PWTRG4

Manufacturer: TI/BB

BiCMOS Cold Cathode Fluorescent Lamp Driver Controller 8-TSSOP 0 to 70

Partnumber Manufacturer Quantity Availability
UCC3973PWTRG4 TI/BB 310 In Stock

Description and Introduction

BiCMOS Cold Cathode Fluorescent Lamp Driver Controller 8-TSSOP 0 to 70 **Manufacturer:** Texas Instruments (TI) / Burr-Brown (BB)  

**Part Number:** UCC3973PWTRG4  

### **Specifications:**  
- **Type:** Power Management IC  
- **Function:** Synchronous Buck Controller  
- **Topology:** Step-Down (Buck)  
- **Input Voltage Range:** 4.5V to 18V  
- **Output Voltage Range:** Adjustable  
- **Switching Frequency:** 300kHz (typical)  
- **Output Current:** Up to 3A (dependent on external components)  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** TSSOP-16 (PW)  
- **Control Method:** Voltage Mode PWM  
- **Protection Features:** Overcurrent Protection (OCP), Undervoltage Lockout (UVLO)  

### **Descriptions:**  
The UCC3973PWTRG4 is a synchronous buck controller designed for high-efficiency DC-DC conversion. It integrates PWM control with external MOSFET drivers to regulate output voltage in step-down applications.  

### **Features:**  
- High-efficiency synchronous rectification  
- Adjustable output voltage via external resistors  
- Internal soft-start for controlled startup  
- Low shutdown current  
- Voltage-mode control for stable operation  
- Compatible with external N-channel MOSFETs  
- TSSOP-16 package for space-constrained designs  

This IC is commonly used in power supplies for industrial, telecom, and computing applications.

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