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UCC28C41D from TI/UNITRODE,Texas Instruments

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7.813ms

UCC28C41D

Manufacturer: TI/UNITRODE

BiCMOS Low-Power Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UCC28C41D TI/UNITRODE 73 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C41D is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI)/Unitrode. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 21V (operating), 7.6V (UVLO turn-off), 8.4V (UVLO turn-on)  
- **Output Current (Source/Sink):** ±1A (peak)  
- **Switching Frequency:** Up to 1MHz  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Gain Bandwidth:** 3MHz (typical)  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Description:**  
The UCC28C41D is a current-mode pulse-width modulation (PWM) controller designed for high-frequency DC-DC power conversion applications. It provides precise regulation with features like cycle-by-cycle current limiting, adjustable oscillator frequency, and under-voltage lockout (UVLO).  

### **Features:**  
- **Current-Mode Control:** Improves transient response and simplifies loop compensation.  
- **Programmable Oscillator:** Adjustable switching frequency via external resistor and capacitor.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures reliable operation under low input voltage conditions.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Error Amplifier with High Gain Bandwidth:** Supports fast feedback loop response.  
- **Leading-Edge Blanking:** Prevents false triggering from noise during MOSFET turn-on.  

This controller is commonly used in offline and isolated DC-DC converters, power supplies, and telecom applications.

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