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UC2856Q1 from TI,Texas Instruments

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UC2856Q1

Manufacturer: TI

Automotive Catalog Improved Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2856Q1 TI 3 In Stock

Description and Introduction

Automotive Catalog Improved Current Mode PWM Controller The UC2856Q1 is a high-performance, BiCMOS current-mode PWM controller manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 8V to 17V (operating), 36V (absolute max)  
- **Output Drive Current:** ±2A (peak)  
- **Switching Frequency:** Up to 1MHz (adjustable via external components)  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-pin SOIC (D)  

### **Descriptions:**
- The UC2856Q1 is a current-mode PWM controller designed for high-frequency DC-DC power conversion applications.  
- It integrates precision voltage reference, error amplifier, oscillator, and high-current totem-pole output driver.  
- Suitable for automotive and industrial applications due to its robust design and wide temperature range.  

### **Features:**
- **Current-Mode Control:** Provides inherent line and load regulation.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within input voltage range.  
- **Synchronization Capability:** Allows external clock synchronization.  
- **Error Amplifier:** High-gain bandwidth for tight output regulation.  
- **Overcurrent Protection:** Cycle-by-cycle current limiting.  
- **Low Startup Current:** Typically 0.5mA.  

This device is optimized for efficiency and reliability in switch-mode power supplies (SMPS).

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