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UC3842BVD from ON,ON Semiconductor

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UC3842BVD

Manufacturer: ON

HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Partnumber Manufacturer Quantity Availability
UC3842BVD ON 1219 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE CONTROLLERS The UC3842BVD is a high-performance current-mode PWM controller manufactured by ON Semiconductor. Below are the factual specifications, descriptions, and features of the UC3842BVD:

### **Specifications:**  
- **Manufacturer:** ON Semiconductor  
- **Type:** Current-Mode PWM Controller  
- **Package:** SOIC-8  
- **Input Voltage (VCC):** 16V (max)  
- **Output Voltage:** Adjustable via external components  
- **Switching Frequency:** Up to 500 kHz  
- **Duty Cycle:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Output Current (Peak):** 1A (source/sink)  
- **Reference Voltage:** 5V ±1%  
- **UVLO (Undervoltage Lockout):** On/Off thresholds typically 16V (on) / 10V (off)  

### **Descriptions:**  
- The UC3842BVD is designed for DC-DC converter applications, providing precise control of switching power supplies.  
- It operates in current-mode control, improving loop response and simplifying compensation.  
- The device includes an oscillator, error amplifier, current sensing comparator, and a totem-pole output stage.  

### **Features:**  
- **Current-Mode Operation:** Enhances transient response and simplifies loop compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Latching PWM:** Ensures single-pulse operation per cycle.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Low Startup Current:** Typically 0.5mA.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  

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

Application Scenarios & Design Considerations

HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Partnumber Manufacturer Quantity Availability
UC3842BVD MOT 2435 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE CONTROLLERS The UC3842BVD is a high-performance current-mode PWM controller manufactured by Motorola (MOT).  

### **Specifications:**  
- **Input Voltage Range:** 8V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Current:** 1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1%)  
- **Low Startup Current:** <1mA  
- **Package Type:** SOIC-8  

### **Descriptions:**  
The UC3842BVD is designed for DC-DC converter applications, providing precise control for switching power supplies. It features a fixed-frequency oscillator, error amplifier, current sensing comparator, and a high-current totem-pole output for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Operation:** Enhances loop response and simplifies compensation.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Internal Trimmed Bandgap Reference:** Provides stable 5V reference.  
- **Single-Ended Output:** Directly drives power MOSFETs.  
- **Low Power Consumption:** Optimized for efficiency.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Partnumber Manufacturer Quantity Availability
UC3842BVD MOT/ON 247 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE CONTROLLERS The UC3842BVD is a high-performance current-mode PWM controller manufactured by Motorola (MOT/ON).  

### **Specifications:**  
- **Type:** Current-mode PWM Controller  
- **Topology:** Flyback, Forward, Boost, Buck  
- **Operating Frequency:** Up to 500 kHz  
- **Output Drive Current:** 1A (peak)  
- **Input Voltage Range:** 8V to 30V (operating), 7.9V (start-up), 16V (UVLO turn-off)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 1 MHz  
- **Current Sense Comparator Response Time:** 100 ns  
- **Package:** SOIC-8  

### **Descriptions and Features:**  
- **Precision Reference:** Internal 5V trimmed bandgap reference (±1% accuracy).  
- **Current-Mode Control:** Improved noise immunity and simplified loop compensation.  
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Soft-Start Capability:** Reduces inrush current during start-up.  
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.  
- **Latching PWM for Overvoltage Protection:** Prevents damage from excessive voltage.  
- **Low Startup Current:** Typically 0.5 mA for efficient operation.  
- **Totem Pole Output:** Optimized for driving power MOSFETs.  

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

Application Scenarios & Design Considerations

HIGH PERFORMANCE CURRENT MODE CONTROLLERS

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