Texas Instruments UC3843AN

Enrgtech Part No: ET11919021
|
Manufacturer Part No:
UC3843AN
|
Manufacturer: Texas Instruments

Product Information

Number of Outputs:

Rise Time:

50ns

Output Current:

1 A

Dimensions:

9.81 x 6.35 x 4.57mm

Mounting Type:

Through Hole

Minimum Operating Temperature:

0 °C

Control Method:

Current

Maximum Switching Frequency:

500 kHz

Height:

4.57mm

Width:

6.35mm

Length:

9.81mm

Package Type:

PDIP

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The Texas Instruments UC3843AN is a high-performance current-mode PWM controller designed for efficient power management in offline and DC-DC converter applications. This integrated circuit is engineered to provide the necessary features for controlling power supplies with a minimal external parts count. It comes with a trimmed oscillator for precise duty cycle control, a high-gain error amplifier, and a current-sensing comparator, making it a staple for stable voltage regulation.

Reasons You Should Use the Product

This Texas Instruments UC3843AN PWM controller supports high-frequency operation up to 500 kHz, enabling the use of smaller magnetic components to save board space. Its low start-up current ensures high efficiency in energy-sensitive designs.

Minimised Power Loss: Extremely low start-up current (less than 0.5mA) enhances overall system efficiency.
System Protection: Integrated undervoltage lockout and pulse-by-pulse current limiting safeguard your circuitry.

Core Performance Features & Application Areas

Standout Features

Optimised for Off-Line and DC-DC Converters.
Automatic Feedforward Compensation.
High-Current Totem Pole Output.
Internally-Trimmed Bandgap Reference.
Double Pulse Suppression.

Key Uses

Switch-Mode Power Supplies (SMPS).
DC-DC Converter modules.
Industrial control systems.
Battery management and charging circuits.

ESD Control Selection Guide V1(Technical Reference)

UC284/UC384 16/Mar/2022(PCN Assembly/Origin)

UCYYY 13/DEC/2017(PCN Design/Specification)

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