UCC3804DTR

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UCC3804DTR

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UCC3804 LOW-POWER BICMOS CURRENT

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規格

屬性 價值
Part Status Active
Internal Switch(s) No
Topology Boost, Buck, Flyback, Forward
Voltage - Start Up 12.5 V
Voltage - Supply (Vcc/Vdd) 8.3V ~ 12V
Duty Cycle 49%
Frequency - Switching Up to 1MHz
Fault Protection Current Limiting
Control Features Frequency Control
Operating Temperature -40°C ~ 85°C (TA)
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Mounting Type Surface Mount
Base Product Number UCC3804

概述

Description

The UCC3804DTR is a high-performance, synchronous buck controller designed for DC-DC converter applications. It features a wide input voltage range and is capable of delivering high efficiency in power management systems. The controller utilizes a current mode control architecture, which enhances transient response and provides inherent overcurrent protection.
Key features include programmable switching frequency, soft-start capability, and an integrated error amplifier for voltage regulation. The UCC3804DTR supports both voltage and current feedback, making it suitable for various applications, including point-of-load converters, battery chargers, and power supplies for processors.
Its robust design allows for seamless integration in compact layouts, and it operates efficiently across a broad range of load conditions. The device is available in a compact package, facilitating space-constrained designs. Overall, the UCC3804DTR is ideal for engineers seeking to optimize power efficiency and control in their electronic designs.

Equivalent

The UCC3804DTR is a voltage mode PWM controller. Equivalent products include the LM3445, LTC3871, and MAX5034. Other compatible alternatives are the UC3842 and TL494, depending on specific application requirements such as frequency, voltage range, and features. Always verify the datasheets for pin compatibility and electrical characteristics before substitution.

Features

The UCC3804DTR is a high-performance voltage mode controller designed for switched-mode power supply applications. Key features include:
1. Voltage Regulation: It provides precise output voltage control, maintaining stability under varying load conditions.
2. High-Speed Operation: Capable of operating at frequencies up to 1 MHz, facilitating compact designs.
3. Built-in Soft Start: Reduces inrush current during startup, enhancing system reliability.
4. Error Amplifier: Features a high-gain differential amplifier for accurate feedback control.
5. Pulse Width Modulation (PWM): Employs a current-mode PWM control scheme for optimal efficiency.
6. Current Limit: Integrated current sensing helps protect against overload conditions.
7. Thermal Shutdown: Provides protection against overheating.
8. Wide Input Voltage Range: Suitable for a variety of applications with input voltages from 4.5V to 40V.
9. Low Standby Power: Designed for energy efficiency, reducing power consumption in idle states.
These features make the UCC3804DTR ideal for applications in DC-DC converters, power supplies, and battery chargers.

Pinout

The UCC3804DTR is a power management IC with a total of 28 pins. It functions as a voltage mode controller for switch-mode power supplies. Key pin functions include:
1. VDD (Pins 1, 15): Supply voltage.
2. GND (Pins 2, 14): Ground connection.
3. COMP (Pin 3): Compensation network connection for stability.
4. CSN (Pin 4): Current sense negative input.
5. CSP (Pin 5): Current sense positive input.
6. RAMP (Pin 6): Ramp voltage input for PWM control.
7. RT (Pin 7): Timing resistor for frequency setting.
8. SS (Pin 8): Soft-start pin to control start-up behavior.
9. PWM (Pin 9): PWM output signal to control the switching device.
10. SYNC (Pin 10): Synchronization input/output.
The remaining pins are used for additional feedback, protection, and control functionalities. The UCC3804DTR is suitable for applications requiring high efficiency and precise regulation in power conversion systems.

Manufacturer

The UCC3804DTR is manufactured by Texas Instruments (TI), a prominent technology company based in the United States. Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits, which are widely used in electronics. The company is known for its innovations in analog and embedded processing technologies, serving a broad spectrum of industries, including automotive, industrial, communications, computing, and consumer electronics. TI is recognized for its commitment to research and development, continually producing cutting-edge solutions that enhance the performance and efficiency of electronic devices.

Application

The UCC3804DTR is a power supply controller primarily used in switch-mode power supplies (SMPS). Its application areas include:
1. DC-DC Converters: Used for step-down (buck) and step-up (boost) converters.
2. Power Management Systems: Ideal for efficient energy conversion in battery-operated devices.
3. Telecommunications: Supports power supplies in telecom equipment.
4. Industrial Equipment: Employed in automation and control systems.
5. Consumer Electronics: Used in products like TVs and computers for efficient power regulation.
Overall, it is designed to enhance efficiency, reduce power loss, and improve thermal performance in power supply designs.

Package

The UCC3804DTR is packaged in a 16-pin SOIC (Small Outline Integrated Circuit) type.