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UC2842A

Linear High-Performance Current Mode Controller

Partnumber Manufacturer Quantity Availability
UC2842A 1 In Stock

Description and Introduction

Linear High-Performance Current Mode Controller The UC2842A is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 30V  
- **Operating Frequency:** Up to 500 kHz  
- **Output Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1% tolerance)  
- **Low Startup Current:** < 1mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** PDIP-8, SOIC-8  

### **Description:**  
The UC2842A is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-performance offline and DC-DC power supplies. It operates in current-mode control, providing improved loop response and simplified compensation. The device includes an undervoltage lockout (UVLO) feature, ensuring reliable startup and shutdown.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Trimmed Oscillator Discharge Current:** Tightens frequency control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Pulse-by-Pulse Current Limiting:** Provides cycle-by-cycle protection.  
- **Internal Soft-Start:** Reduces startup stresses.  
- **Low Power Consumption:** Suitable for energy-efficient designs.  

This information is based solely on the manufacturer's datasheet for the UC2842A.

Application Scenarios & Design Considerations

Linear High-Performance Current Mode Controller
Partnumber Manufacturer Quantity Availability
UC2842A ST 22 In Stock

Description and Introduction

Linear High-Performance Current Mode Controller The UC2842A is a high-performance current-mode PWM controller manufactured by STMicroelectronics. Below are the specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 30V (start-up), 7.6V to 30V (operating)  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Reference Voltage:** 5V (±1% tolerance)  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** PDIP-8, SO-8  

### **Descriptions:**  
- The UC2842A is a fixed-frequency pulse-width modulation (PWM) controller designed for DC-DC converter applications.  
- It operates in current-mode control, providing improved loop response and simplified feedback compensation.  
- The device includes an undervoltage lockout (UVLO) feature with hysteresis, ensuring reliable start-up and shutdown.  
- It is commonly used in power supplies, battery chargers, and offline converters.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Trimmed Oscillator Discharge Current:** Provides precise duty cycle control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  
- **Low Start-Up and Operating Current:** Reduces power consumption.  

This information is based on the manufacturer's datasheet and technical documentation for the UC2842A from STMicroelectronics.

Application Scenarios & Design Considerations

Linear High-Performance Current Mode Controller
Partnumber Manufacturer Quantity Availability
UC2842A UC 10 In Stock

Description and Introduction

Linear High-Performance Current Mode Controller The UC2842A is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 30V  
- **Operating Frequency:** Up to 500 kHz  
- **Output Current (Source/Sink):** 1A (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1% tolerance)  
- **Error Amp Bandwidth:** 1 MHz  
- **Start-Up Current:** <1 mA  
- **Operating Temperature Range:** -40°C to +85°C  

### **Description:**  
The UC2842A is a fixed-frequency pulse-width modulation (PWM) controller designed for DC-DC converter applications. It operates in current-mode control, providing improved loop response and simplified compensation. The device includes an undervoltage lockout (UVLO) feature with hysteresis, ensuring reliable start-up and shutdown.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies feedback loop compensation.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within the input voltage range.  
- **Trimmed Oscillator Discharge Current:** Provides precise duty cycle control.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Pulse-by-Pulse Current Limiting:** Protects against overload conditions.  
- **Low Start-Up and Operating Current:** Improves efficiency.  
- **Internal Soft-Start:** Reduces inrush current during start-up.  

The UC2842A is commonly used in power supplies, battery chargers, and DC-DC converters.

Application Scenarios & Design Considerations

Linear High-Performance Current Mode Controller
Partnumber Manufacturer Quantity Availability
UC2842A LINFINITY 20 In Stock

Description and Introduction

Linear High-Performance Current Mode Controller The UC2842A is a high-performance current-mode PWM controller manufactured by LINFINITY. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 8V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Current (Source/Sink):** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage Accuracy:** ±1% (5V)  
- **Current Sense Comparator Threshold:** 1V  
- **Start-Up Current:** <1mA  
- **Undervoltage Lockout (UVLO):** 8V (on) / 7.6V (off)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** DIP-8, SOIC-8  

### **Descriptions:**  
- The UC2842A is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-efficiency power supply designs.  
- It operates in current-mode control, providing improved loop response and simplified feedback compensation.  
- Features include an integrated high-gain error amplifier, precise voltage reference, and a totem-pole output stage for driving power MOSFETs.  
- The device includes cycle-by-cycle current limiting, making it suitable for flyback, forward, and boost converter topologies.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies feedback loop design.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Programmable Oscillator:** Allows flexible frequency adjustment with an external resistor and capacitor.  
- **Undervoltage Lockout (UVLO):** Ensures reliable operation under low-voltage conditions.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Latching PWM:** Prevents multiple pulses during fault conditions.  

The UC2842A is widely used in switch-mode power supplies (SMPS), DC-DC converters, and battery chargers.

Application Scenarios & Design Considerations

Linear High-Performance Current Mode Controller
Partnumber Manufacturer Quantity Availability
UC2842A ST8 4883 In Stock

Description and Introduction

Linear High-Performance Current Mode Controller The UC2842A is a high-performance current-mode PWM controller manufactured by STMicroelectronics (ST). Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range (VCC):** 8.5V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Current (Source/Sink):** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage (VREF):** 5V ±1%  
- **Low Startup Current:** < 1mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** PDIP-8, SO-8  

### **Descriptions:**
- The UC2842A is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-performance DC-DC power supplies.  
- 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 trimmed oscillator for precise frequency control.  
- Designed for offline and DC-DC converters, it is widely used in flyback, forward, and boost converter topologies.  

### **Features:**
- **Current-Mode Control:** Enhances transient response and simplifies feedback loop design.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Under-Voltage Lockout (UVLO):** Ensures reliable startup and shutdown.  
- **Trimmed Oscillator:** Provides accurate frequency control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Soft-Start Capability:** Reduces inrush current during startup.  

This information is based on the manufacturer's datasheet for the UC2842A from STMicroelectronics.

Application Scenarios & Design Considerations

Linear High-Performance Current Mode Controller

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