UC2845BD1013TR

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UC2845BD1013TR

IC REG CTRLR BOOST/FLYBACK 8SOIC

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
OutputType Transistor Driver
Function Step-Up, Step-Up/Step-Down
OutputConfiguration Positive, Isolation Capable
Topology Boost, Flyback
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 7.6V ~ 30V
Frequency-Switching Up to 500kHz
DutyCycle(Max) 48%
SynchronousRectifier No
ClockSync No
ControlFeatures Frequency Control
OperatingTemperature -40°C ~ 150°C (TJ)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

概述

Description

The UC2845BD1013TR is a current-mode PWM (Pulse Width Modulation) controller commonly used in DC-DC converters. It is part of the UCx84x family, known for their high performance in power supply management applications. This component is specifically designed for efficient and reliable power conversion, featuring a fixed-frequency oscillator, precise voltage reference, and error amplifier, making it suitable for off-line and DC-to-DC converter applications.
Key features include a 5V reference trimmed to ±1%, low start-up current, high-speed oscillator, and peak current limiting for enhanced safety and performance. The device operates over a wide input voltage range and is typically utilized in power supply designs that require high stability and efficiency. It comes in a surface-mount package, making it ideal for compact and high-density circuit designs.
Overall, the UC2845BD1013TR is an effective solution for designers looking to implement robust and efficient power supply systems in various electronic applications.

Features

The UC2845BD1013TR is a high-performance, fixed-frequency PWM (Pulse Width Modulation) controller. Key features include:
1. Fixed Frequency Operation: Maintains consistent performance across various load conditions.
2. High Current Output: Capable of driving power MOSFETs and bipolar transistors directly.
3. Low Start-Up Current: Minimizes power consumption during start-up.
4. Current Mode Control: Provides improved performance and stability by directly measuring the inductor current.
5. Under-Voltage Lockout (UVLO): Ensures the device operates only when the supply voltage is above a certain threshold.
6. Wide Operating Voltage Range: Offers flexibility in different power supply applications.
7. Internal Oscillator: Simplifies design by eliminating the need for external timing components.
8. Short Circuit Protection: Protects the system by shutting down in fault conditions.
This controller is typically used in power supply designs for its efficiency, reliability, and robust feature set, making it suitable for a range of applications, including consumer electronics and industrial power systems.

Package

The UC2845BD1013TR is a high-performance current mode PWM controller housed in an SOIC-8 package, which is a small outline integrated circuit with 8 pins.

Pinout

The UC2845BD1013TR is a variant of the UC2845, which is a current-mode PWM (Pulse Width Modulation) controller. The device is primarily used for power supply applications such as DC-DC converters and off-line switching power supplies. It typically comes in an 8-pin package.
Here is a brief overview of the pin functions:
1. Compensation (COMP): Used for compensating the control loop.
2. Voltage Feedback (VFB): Receives the output voltage feedback to regulate output.
3. Current Sense (ISENSE): Monitors the current flowing through the power switch.
4. RT/CT: Sets the oscillation frequency with an external resistor and capacitor.
5. GND: Ground reference for the IC.
6. Output (OUT): Drives the gate of an external power MOSFET or transistor.
7. VCC: Supplies power to the IC.
8. VREF: Provides a reference voltage output.
Each pin serves a critical role in regulating and controlling power supply parameters, ensuring efficient operation of the power converter applications.

Manufacturer

The UC2845BD1013TR is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic products, including analog and embedded processing chips. They are known for their development, production, and sale of semiconductors and various electronic components used in a multitude of applications across industries such as automotive, industrial, consumer electronics, and communications. Texas Instruments is recognized for its innovation in technology and significant contributions to the electronics sector.

Application

The UC2845BD1013TR is a current-mode PWM controller designed for efficient power management. It is commonly used in applications such as switch-mode power supplies (SMPS), DC-DC converters, and off-line power supplies. Its features make it suitable for use in power adapters, battery chargers, motor control, and LED drivers, where precise control of output voltage and current is necessary.

Equivalent

The UC2845BD1013TR is a high-performance current-mode PWM controller. Equivalent products include MC2845, UC2842/3/4/5, and TL2845 from various manufacturers. It’s important to verify the specifications and pin configurations for compatibility in your application.

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