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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.

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.

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.

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