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UC1843L/883B from TI,Texas Instruments

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UC1843L/883B

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC1843L/883B,UC1843L883B TI 10 In Stock

Description and Introduction

Current Mode PWM Controller The UC1843L/883B is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** UC1843L/883B  
- **Category:** PWM Controller (Current Mode)  
- **Operating Temperature Range:** -55°C to +125°C (Military Grade)  
- **Supply Voltage (VCC):** Up to 30V  
- **Output Drive Current:** ±1A (Peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Package:** 8-Pin DIP (Dual In-Line Package)  

### **Descriptions:**  
- The UC1843L/883B is a radiation-hardened, military-grade PWM controller designed for high-reliability applications.  
- It operates in current-mode control, providing improved loop response and simplified feedback compensation.  
- Features include under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a totem-pole output stage for driving power MOSFETs.  

### **Features:**  
- **Radiation-Hardened:** Qualified for space and military applications.  
- **Current-Mode Control:** Enhances transient response and simplifies feedback loop design.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation only when VCC is within the specified range.  
- **Adjustable Oscillator Frequency:** External RC components set the switching frequency.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs with ±1A peak current.  
- **Error Amplifier:** Provides precision voltage regulation.  
- **Cycle-by-Cycle Current Limiting:** Protects against overload conditions.  

This information is based solely on the manufacturer's datasheet and technical documentation.

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