UC3824DW

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UC3824DW

IC REG CTRLR BUCK/BOOST 16SOIC

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365 일 보장

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사양

Package Bulk,Tube
ProductStatus Active
OutputType Transistor Driver
Function Step-Up, Step-Down
OutputConfiguration Positive
Topology Buck, Boost
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 8.4V ~ 30V
Frequency-Switching 340kHz ~ 460kHz
DutyCycle(Max) 85%
SynchronousRectifier No
ClockSync No
ControlFeatures Current Limit, Enable, Frequency Control, Ramp, Soft Start
OperatingTemperature 0°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case 16-SOIC (0.295, 7.50mm Width)

개요

Description

The UC3824DW is a high-performance pulse width modulation (PWM) controller typically used in switch-mode power supply systems. Developed by Texas Instruments, this device is part of the UC3823/UC3824 family, known for its ability to efficiently manage power conversion processes.
The UC3824DW features a wide range of functionalities including a fixed-frequency oscillator, a high-gain error amplifier, and a precision PWM comparator. It also integrates a current-sensing comparator and an undervoltage lockout mechanism, which help enhance its reliability and performance in power regulation tasks. The device operates efficiently over a wide input voltage range and supports current-mode or voltage-mode control architectures.
One of the key aspects of the UC3824DW is its ability to facilitate high-speed power switching, making it suitable for applications requiring precise power management such as telecommunications, server power supplies, and industrial equipment. Its DW suffix indicates the surface-mount SOIC package, which is compact and suitable for space-limited applications.
Overall, the UC3824DW is valued for its robust performance, versatility, and reliability in various power supply applications.

Features

The UC3824DW is a high-performance, current-mode Pulse Width Modulation (PWM) controller designed for power supply applications. Key features include:
1. Wide Supply Voltage Range: Operates between 8V to 30V.
2. High-Frequency Operation: Supports switching frequencies up to 1 MHz, allowing for compact and efficient designs.
3. Current Mode Control: Provides improved loop response and simple pulse-by-pulse current limiting.
4. Error Amplifier: Features a high-speed error amplifier for precise voltage regulation.
5. Undervoltage Lockout (UVLO): Ensures the controller starts only when the supply voltage is within a specified range, enhancing reliability.
6. Totem-Pole Output: Provides high current drive capability for fast switching of external MOSFETs or transistors.
7. Soft-Start Capability: Integrates a soft-start function to prevent inrush current during startup.
8. Low Start-Up Current: Reduces the power consumption during the startup phase.
9. Programmable Oscillator: Allows for adjustable frequency settings to suit different application requirements.
These features make the UC3824DW suitable for a variety of power supply and DC-DC converter applications, ensuring efficient and reliable performance.

Package

The UC3824DW is a pulse width modulation (PWM) controller integrated circuit, available in a surface-mount SOIC-16 (Small Outline Integrated Circuit) package type. This package facilitates compact designs and is suitable for automated assembly processes.

Pinout

The UC3824DW is a high-performance, current-mode Pulse Width Modulation (PWM) controller commonly used in power supply applications. It comes in a 16-pin SOIC (Small Outline Integrated Circuit) package. Here is a brief overview of its pin functions:
1. Comp (1): Compensation for the error amplifier.
2. VFB (2): Voltage feedback input.
3. ILIM/SD (3): Current limit or shutdown input.
4. RT/CT (4): Timing resistor and capacitor for setting oscillator frequency.
5. GND (5): Ground reference.
6. OSC OUT (6): Oscillator output.
7. DISCH (7): Discharge pin for timing capacitor.
8. VCC (8): Supply voltage input.
9. VC (9): Output stage supply voltage.
10. OUT A (10): Channel A output.
11. PGND (11): Power ground.
12. OUT B (12): Channel B output.
13. SYNC (13): Synchronization input.
14. RD (14): Ramp discharge input.
15. SENSE (15): Current sense input.
16. REF (16): Reference voltage output.
These functions enable the UC3824DW to efficiently manage and control the power delivery in various electronic circuits.

Manufacturer

The UC3824DW is manufactured by Texas Instruments. Texas Instruments, commonly known as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. Their products are used in different applications ranging from industrial to consumer electronics. TI is renowned for its innovation in analog technology and embedded processing, and it operates on a global scale, providing solutions for automotive, industrial, personal electronics, communications, and enterprise systems.

Application

The UC3824DW is a high-performance current-mode PWM controller used primarily in power supply applications. Its typical application areas include DC-DC converters, AC-DC power supplies, and motor control systems. It is favored for its fast response, high efficiency, and robust performance in environments needing precise power regulation. Additionally, its features make it suitable for use in telecommunications, industrial equipment, and consumer electronics where efficient power management is crucial.

Equivalent

The UC3824DW is a current-mode PWM controller used in power supply applications. Equivalent products include the TI UC3823, UC3842, and UC3843 series, ON Semiconductor's NCP3824, and Infineon's ICE2A series. These offer similar functionalities for current-mode control and PWM operation, and can often be used interchangeably depending on specific application requirements. Always verify with datasheets for compatibility in your specific application.

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