TL2844BDR-8

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TL2844BDR-8

+Nomenclature

IC REG CTRLR BST FLYBK PWM 8SOIC

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Spécifications

Attribut Valeur
Part Status Active
Base Product Number TL2844
Output Type Transistor Driver
Function Step-Up, Step-Up/Step-Down
Output Configuration Positive
Topology Boost, Flyback, Forward
Number of Outputs 1
Output Phases 1
Voltage - Supply (Vcc/Vdd) 10V ~ 30V
Frequency - Switching Up to 500kHz
Duty Cycle (Max) 48%
Synchronous Rectifier No
Clock Sync No
Control Features Frequency Control
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Packaging Cut Tape (CT), Tape & Reel (TR)

Présentation

Description

The TL2844BDR-8 is a current-mode PWM (pulse-width modulation) controller designed for power regulation in various electronic applications. It is part of the TL28xx series, known for its efficiency and performance in power supply designs. The device offers features such as low standby current, high-speed operation, and a wide voltage range, making it suitable for both isolated and non-isolated DC-DC converters.
Key features of the TL2844BDR-8 include an adjustable oscillator frequency, which provides flexibility in design, an under-voltage lockout (UVLO) feature for improved reliability, and short-circuit protection to prevent damage under fault conditions. The controller also includes a precision reference voltage, which ensures accurate output regulation.
The device is commonly used in applications such as power adapters, battery chargers, and other power supply systems that require efficient energy conversion. Its small package and robust design make it ideal for compact and high-performance applications. The TL2844BDR-8 is particularly valued for its balance of performance, reliability, and cost-effectiveness in power management circuits.

Equivalent

The TL2844BDR-8 is a PWM controller IC. Equivalent products might include the UC2844 from Texas Instruments, LM2844 from National Semiconductor, and the KA2844 from Samsung. These are all PWM controllers with similar functionalities. However, always check specific data sheets and compatibility with your application, as specifications like voltage, current ratings, and pin configurations may vary.

Features

The TL2844BDR-8 is a fixed-output linear voltage regulator designed for applications requiring low dropout and precise voltage regulation. Key features include:
1. Low Dropout Voltage: This regulator provides efficient performance with minimal voltage drop across the device, maximizing power efficiency.

2. Fixed Voltage Output: The device delivers a consistent and stable output voltage, suitable for sensitive electronics.
3. Thermal Protection: It includes built-in thermal shutdown features to prevent overheating, enhancing device reliability.
4. Short-Circuit Protection: The regulator is equipped with short-circuit protection to prevent damage in case of output overload.
5. High PSRR: The device offers a high Power Supply Rejection Ratio, reducing the impact of supply noise on the output voltage.
6. Compact Package: The TL2844BDR-8 is available in a small surface-mount package, making it ideal for space-constrained applications.
7. Low Quiescent Current: It features low quiescent current operation, making it suitable for battery-powered applications.
These features make the TL2844BDR-8 ideal for use in various electronic devices where efficient and reliable voltage regulation is crucial.

Pinout

The TL2844BDR-8 is an integrated circuit from Texas Instruments that features 8 pins. It is a fixed frequency current-mode PWM (Pulse Width Modulation) controller, primarily used in switch-mode power supply applications.
The function of each pin is generally as follows:
1. Compensation (COMP): Connects to the output of the error amplifier for loop compensation.
2. Voltage Feedback (VFB): Receives a feedback voltage for output regulation.
3. Current Sense (ISENSE): Monitors the switch current and helps in current limiting.
4. RT/CT: Sets the oscillator frequency with an external resistor and capacitor.
5. Ground (GND): Common ground reference for the IC.
6. Output (OUT): Drives the gate of the power MOSFET or transistor.
7. VCC: Supply voltage input for the IC.
8. VREF: Provides a stable reference voltage output.
These pins enable the TL2844BDR-8 to effectively manage PWM control, providing efficient power regulation and management for devices like power adapters and other power supply systems.

Manufacturer

The TL2844BDR-8 is manufactured by Texas Instruments, a leading global semiconductor company. Texas Instruments is known for designing and manufacturing a wide array of analog and embedded processing chips, including integrated circuits used in everything from personal electronics to industrial applications. The company focuses on developing innovative technology to support a broad range of industries, such as automotive, industrial, personal electronics, communications equipment, and enterprise systems. Texas Instruments is a well-regarded player in the electronics sector, recognized for its extensive product portfolio and commitment to research and development in semiconductor technology.

Application

The TL2844BDR-8 is a PWM controller suited for various applications, including:
1. DC-DC Converters: Used in step-down (buck) or step-up (boost) converter circuits for power regulation.
2. Switching Power Supplies: Ideal for use in efficient switch-mode power supply designs.
3. Battery Chargers: Facilitates efficient charging with controlled voltage and current.
4. LED Drivers: Supports constant current supply for LED applications.
5. Consumer Electronics: Powers and regulates components in devices like televisions and personal computers.
6. Industrial Control Systems: Used in motor drives and control units for maintaining power efficiency.
Its versatility in providing precise power control makes it suitable for a wide range of applications requiring efficient energy management.

Package

The TL2844BDR-8 is typically available in an SOIC-8 package. SOIC stands for Small Outline Integrated Circuit, and the "8" indicates it has 8 pins.