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UC1846J/883B

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC1846J/883B,UC1846J883B 12 In Stock

Description and Introduction

Current Mode PWM Controller The UC1846J/883B is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are its key specifications, descriptions, and features:

### **Manufacturer:**  
Texas Instruments  

### **Part Number:**  
UC1846J/883B  

### **Description:**  
The UC1846J/883B is a military-grade, radiation-hardened PWM controller designed for high-reliability applications. It operates in current-mode control, providing precise regulation for power supplies.  

### **Key Features:**  
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Operating Frequency:** Up to 1MHz.  
- **Duty Cycle Range:** 0% to 100%.  
- **Precision Reference:** 5.1V ±1% trimmed bandgap reference.  
- **Dual Output Drivers:** Totem-pole outputs capable of sourcing/sinking 500mA peak current.  
- **Synchronization Capability:** Allows for external clock synchronization.  
- **Soft-Start Function:** Provides controlled startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low-voltage conditions.  
- **Error Amplifier:** High-gain bandwidth for tight regulation.  
- **Radiation-Hardened:** Qualified for space and military applications.  

### **Applications:**  
- Military and aerospace power supplies  
- High-reliability DC-DC converters  
- Industrial and telecom power systems  

### **Package:**  
16-pin CERDIP (J-lead)  

### **Temperature Range:**  
- **Operating:** -55°C to +125°C  
- **Storage:** -65°C to +150°C  

### **Compliance:**  
- MIL-PRF-38535 Class B (QML) qualified  
- Radiation-hardened for space applications  

This device is designed for mission-critical systems requiring high performance and reliability.

Partnumber Manufacturer Quantity Availability
UC1846J/883B,UC1846J883B TI 402 In Stock

Description and Introduction

Current Mode PWM Controller The UC1846J/883B is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** UC1846J/883B  
- **Type:** Current-Mode PWM Controller  
- **Military Grade:** 883B (high-reliability, radiation-hardened)  
- **Operating Temperature Range:** -55°C to +125°C  
- **Supply Voltage (Vcc):** Up to 40V  
- **Output Drive Current:** 500mA (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Package:** 16-pin CERDIP (J-lead)  

### **Descriptions and Features:**  
- Designed for high-reliability military and aerospace applications.  
- Current-mode control for improved transient response and loop stability.  
- Features include:  
  - Precision reference voltage (5V ±1%).  
  - Under-voltage lockout (UVLO) protection.  
  - Soft-start capability.  
  - Error amplifier with wide bandwidth.  
  - Dual alternating outputs for push-pull or half-bridge applications.  
  - Adjustable dead-time control.  
  - Synchronization capability for multi-unit operation.  

This device is suitable for power supply designs requiring rugged performance in harsh environments.

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