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UC3844D8TRG4 from TI,Texas Instruments

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UC3844D8TRG4

Manufacturer: TI

Current-Mode PWM Controller 8-SOIC 0 to 70

Partnumber Manufacturer Quantity Availability
UC3844D8TRG4 TI 5000 In Stock

Description and Introduction

Current-Mode PWM Controller 8-SOIC 0 to 70 The **UC3844D8TRG4** is a high-performance current-mode PWM controller manufactured by **Texas Instruments (TI)**. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Category:** Integrated Circuits (ICs)  
- **Family:** PMIC - Voltage Regulators - DC DC Switching Controllers  
- **Topology:** Boost, Flyback, Forward  
- **Output Type:** Transistor Driver  
- **Output Phases:** 1  
- **Voltage - Supply (Vcc/Vdd):** 8.4V to 30V  
- **Duty Cycle (Max):** 50%  
- **Frequency - Switching:** Up to 500kHz  
- **Operating Temperature:** -40°C to 85°C  
- **Package / Case:** 8-SOIC (0.154", 3.90mm Width)  
- **Mounting Type:** Surface Mount  

### **Descriptions:**  
The **UC3844D8TRG4** is a fixed-frequency PWM controller optimized for high-performance DC-DC converter applications. It features current-mode control for improved loop response and includes a built-in oscillator, error amplifier, and high-current totem-pole output for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Control:** Provides inherent line feedforward, cycle-by-cycle current limiting, and simplified loop compensation.  
- **Adjustable Oscillator Frequency:** Up to 500kHz operation.  
- **Precision Reference:** 5V ±1% trimmed bandgap reference.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup with hysteresis.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs with up to 1A peak current.  
- **Low Startup Current:** Typically 0.5mA for efficient power-up.  
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.  

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

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