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KA3842BD from SAMSUNG

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15.625ms

KA3842BD

Manufacturer: SAMSUNG

SMPS Controller

Partnumber Manufacturer Quantity Availability
KA3842BD SAMSUNG 2490 In Stock

Description and Introduction

SMPS Controller The KA3842BD is a pulse width modulation (PWM) controller IC manufactured by Samsung. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Samsung  
- **Type:** Current Mode PWM Controller  
- **Package:** DIP-8 (Dual In-line Package)  
- **Operating Voltage Range:** 7V to 30V  
- **Output Current:** ±1A (Peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -25°C to +85°C  

### **Descriptions:**
- The KA3842BD is designed for offline and DC-to-DC converter applications.  
- It provides precise control of switching power supplies with current-mode operation.  
- The IC includes features like under-voltage lockout (UVLO), current sensing, and error amplification.  

### **Features:**
- **Current Mode Operation:** Ensures cycle-by-cycle current limiting.  
- **Under-Voltage Lockout (UVLO):** Prevents operation below 7V and ensures proper startup.  
- **Trimmed Oscillator Discharge Current:** Provides accurate duty cycle control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Internal Reference Voltage:** 5V (±1%) for stable feedback control.  
- **Low Startup and Operating Current:** Improves efficiency.  

This information is based on the manufacturer's datasheet for the KA3842BD.

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