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UC2843AM from SMC/LINFINIT

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UC2843AM

Manufacturer: SMC/LINFINIT

CURRENT MODE PWM CONTROLLER

Partnumber Manufacturer Quantity Availability
UC2843AM SMC/LINFINIT 1100 In Stock

Description and Introduction

CURRENT MODE PWM CONTROLLER The UC2843AM is a high-performance current-mode PWM controller manufactured by SMC/LINFINIT. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range (VIN):** 8V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Drive Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage (VREF):** 5V (±1%)  
- **Low Startup Current:** <0.5mA  
- **Undervoltage Lockout (UVLO):** On at 8.4V (typical), Off at 7.6V (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** SOIC-8  

### **Descriptions:**  
- The UC2843AM is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-efficiency power supply designs.  
- It features current-mode control for improved loop response and simplified compensation.  
- Includes built-in protections such as undervoltage lockout (UVLO), cycle-by-cycle current limiting, and a latch for fault conditions.  

### **Features:**  
- **Current-Mode Operation:** Enhances transient response and simplifies feedback loop design.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Programmable Oscillator:** Allows flexible frequency setting via external components.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Internal Trimmed Bandgap Reference:** Provides stable 5V reference.  
- **Latching PWM for Overcurrent Protection:** Ensures safe shutdown during faults.  

This information is based on the manufacturer's datasheet for the UC2843AM from SMC/LINFINIT.

Application Scenarios & Design Considerations

CURRENT MODE PWM CONTROLLER
Partnumber Manufacturer Quantity Availability
UC2843AM LINFINTY 130 In Stock

Description and Introduction

CURRENT MODE PWM CONTROLLER The UC2843AM is a high-performance current-mode PWM controller manufactured by LINFINTY. Below are its specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 8V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Output Current (Source/Sink):** ±1A  
- **Reference Voltage:** 5V (±1%)  
- **Start-up Current:** <1mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** SOIC-8  

### **Descriptions:**
- The UC2843AM is designed for offline and DC-DC converter applications.  
- It features a fixed-frequency current-mode control architecture for improved loop response.  
- Includes under-voltage lockout (UVLO) with hysteresis for reliable start-up.  
- Suitable for flyback, forward, and boost converter topologies.  

### **Features:**
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Auto-Restart Protection:** Includes cycle-by-cycle current limiting and latch-off for fault conditions.  
- **Programmable Oscillator:** Allows flexible frequency setting with external components.  
- **Soft-Start Capability:** Reduces inrush current during start-up.  
- **Low Power Consumption:** Optimized for energy-efficient designs.  
- **High Noise Immunity:** Robust design for stable operation in noisy environments.  

This information is based on the manufacturer's datasheet for the UC2843AM from LINFINTY.

Application Scenarios & Design Considerations

CURRENT MODE PWM CONTROLLER
Partnumber Manufacturer Quantity Availability
UC2843AM LINFINITY 2500 In Stock

Description and Introduction

CURRENT MODE PWM CONTROLLER The UC2843AM is a PWM (Pulse Width Modulation) controller IC manufactured by LINFINITY. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** LINFINITY  
- **Type:** Current Mode PWM Controller  
- **Operating Voltage Range:** 8V to 30V  
- **Output Voltage:** Adjustable  
- **Switching Frequency:** Up to 500kHz  
- **Output Current:** 1A (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**
- The UC2843AM is designed for high-performance switching power supply applications.  
- It operates in current mode, 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.  
- Suitable for flyback, forward, and boost converter topologies.  

### **Features:**
- **Current Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **Adjustable Oscillator Frequency:** Allows flexibility in design.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Low Startup Current:** Typically 0.5mA.  

This information is based on the manufacturer's datasheet for the UC2843AM PWM controller.

Application Scenarios & Design Considerations

CURRENT MODE PWM CONTROLLER
Partnumber Manufacturer Quantity Availability
UC2843AM LINFIN 35 In Stock

Description and Introduction

CURRENT MODE PWM CONTROLLER The UC2843AM is a high-performance current-mode PWM controller manufactured by LINFIN.  

### **Specifications:**  
- **Input Voltage Range:** 8V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Maximum Output Current:** 1A (peak)  
- **Reference Voltage:** 5V (±1%)  
- **Low Startup Current:** <1mA  
- **Undervoltage Lockout (UVLO):** 7.9V (turn-on), 7.5V (turn-off)  
- **Package:** 8-pin SOIC  

### **Descriptions:**  
- Designed for offline and DC-DC converter applications.  
- Features current-mode control for improved transient response.  
- Includes a precision voltage reference for stable operation.  
- Suitable for flyback, forward, and boost converter topologies.  

### **Features:**  
- **Current-Mode Operation:** Enhances loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Pulse-by-Pulse Current Limiting:** Provides cycle-by-cycle protection.  
- **Programmable Soft-Start:** Reduces inrush current.  
- **Internal Trimmed Oscillator:** Ensures accurate frequency control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  

This information is based on the LINFIN UC2843AM datasheet.

Application Scenarios & Design Considerations

CURRENT MODE PWM CONTROLLER
Partnumber Manufacturer Quantity Availability
UC2843AM MSC 43326 In Stock

Description and Introduction

CURRENT MODE PWM CONTROLLER The UC2843AM is a PWM controller manufactured by MSC (Micro Semiconductor Corporation). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Topology:** Current-mode PWM controller  
- **Operating Frequency:** Up to 500 kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Supply Voltage (VCC):** 8V to 30V  
- **Start-up Voltage:** 8.4V (typical)  
- **Under-Voltage Lockout (UVLO):** 7.9V (turn-off), 16V (turn-on)  
- **Output Current (Peak):** ±1A  
- **Reference Voltage:** 5V ±1%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
- The UC2843AM is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-performance DC-DC and offline power supplies.  
- It features current-mode control for improved loop response and simplified compensation.  
- Includes built-in protections such as under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a programmable dead-time control.  

### **Features:**
- **Current-Mode Operation:** Provides inherent line feed-forward and cycle-by-cycle current limiting.  
- **Automatic Feed-Forward Compensation:** Simplifies feedback loop design.  
- **Trimmed Oscillator Discharge Current:** Ensures precise duty cycle control.  
- **Soft-Start Capability:** Reduces stress during startup.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Low Startup and Operating Current:** Improves efficiency.  
- **Latching PWM for Double-Pulse Suppression:** Enhances reliability.  

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

Application Scenarios & Design Considerations

CURRENT MODE PWM CONTROLLER

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