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TL2844D from TI,Texas Instruments

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TL2844D

Manufacturer: TI, TI/BB

Current-Mode PWM Controller

Partnumber Manufacturer Quantity Availability
TL2844D TI, TI/BB 68 In Stock

Description and Introduction

Current-Mode PWM Controller The TL2844D is a PWM controller IC manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer:** Texas Instruments (TI)  

### **Specifications:**  
- **Type:** Current-Mode PWM Controller  
- **Topology:** Flyback, Forward, Boost, Buck  
- **Operating Voltage Range:** 8.5V to 30V  
- **Output Drive Current:** 1A (Peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 3MHz (Typical)  
- **Start-Up Current:** 0.5mA (Typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The TL2844D is a high-performance current-mode PWM controller designed for DC-DC converter and power supply applications. It provides precise regulation with features like under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a trimmed oscillator for accurate frequency control.  

### **Features:**  
- **Current-Mode Control:** Improves loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage range.  
- **Trimmed Oscillator:** Provides precise frequency control.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Error Amplifier with Reference:** Enables closed-loop feedback control.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  

This information is based solely on the available specifications and features of the TL2844D from Texas Instruments.

Application Scenarios & Design Considerations

Current-Mode PWM Controller

Alternative Part Number

  • UC2844BD1 --: Pin-compatible current-mode PWM controller from the UC284x family with the same SOIC-8 footprint and similar UVLO thresholds, widely used as a direct substitute.
  • SG2844D --: Industry-standard 2844-series current-mode PWM controller in SOIC-8, functionally equivalent to the TL2844D with comparable oscillator and output drive specs.
  • UC3844BD1 --: Well-established 3844 current-mode controller in SOIC-8 offering similar duty-cycle limiting and drive capability, suitable as a cross-vendor replacement.
  • UC2844D --: Same industry-standard current-mode PWM controller family with identical function and pinout, widely available as a direct cross-reference.
  • UC3844D --: Closely related current-mode PWM controller in the same package with comparable electrical characteristics, commonly used as a substitute.

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