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KA3844BD from SAMSUNG

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KA3844BD

Manufacturer: SAMSUNG

SMPS Controller

Partnumber Manufacturer Quantity Availability
KA3844BD SAMSUNG 3000 In Stock

Description and Introduction

SMPS Controller The KA3844BD is a PWM (Pulse Width Modulation) controller IC manufactured by **SAMSUNG**. Below are its specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Manufacturer:** SAMSUNG  
- **Type:** Current Mode PWM Controller  
- **Package:** DIP-8 or SOIC-8  
- **Operating Voltage Range:** 7V to 30V  
- **Output Duty Cycle:** Up to 100%  
- **Switching Frequency:** Up to 500kHz  
- **Output Current (Source/Sink):** ±200mA (Peak)  
- **Reference Voltage (Vref):** 5V (±1%)  
- **Operating Temperature Range:** -25°C to +85°C  

### **Descriptions:**  
- The KA3844BD is a fixed-frequency current-mode PWM controller designed for DC-DC converter and offline power supply applications.  
- It includes an oscillator, error amplifier, current sensing comparator, PWM latch, and a high-current totem-pole output driver.  
- It provides under-voltage lockout (UVLO) protection with hysteresis.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Enhances 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 (<1mA):** Reduces power consumption during startup.  
- **Internal Trimmed Bandgap Reference:** Provides stable 5V reference.  

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

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