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UCC3804N +BOM

12V, 1A low power BICMOS 1MHz current mode PWM with 12.5V/8.3V UVLO and 50% duty cycle, 0C to 70C

UCC3804N Information

Description

The Texas Instruments UCC3804N is a high-performance PWM controller designed for low-power applications. It features voltage feed-forward compensation, cycle-by-cycle current limiting, adjustable soft-start, and a low startup current of 150µA. The device has a wide input voltage range and frequency jittering to reduce EMI. With a switching frequency of up to 500kHz, it is suitable for high-performance power supplies. The UCC3804N is commonly used in offline LED drivers, isolated flyback converters, and power factor correction circuits. Its applications also extend to industrial equipment, household appliances, and automotive systems where controlling power switching operations is required. The device's compact DIP-8 package makes it ideal for space-constrained designs. Overall, the UCC3804N offers a reliable and efficient solution for powering various electronic devices.

Features

The UCC3804N features include:

  • Voltage feed-forward compensation
  • Cycle-by-cycle current limiting
  • Adjustable soft-start
  • Low startup current of 150µA
  • Wide input voltage range
  • Frequency jittering for reduced EMI
  • 500kHz switching frequency for high-performance power supplies

Package

The package type of UCC3804N is an 8-DIP (0.300", 7.62mm).

Pinout

The UCC3804N has an 8-pin DIP package.

Here's a concise overview of its pins:

  • Pin 1: VCC (Positive Supply Voltage)
  • Pin 2: GND (Ground)
  • Pin 3: OUT (Output)
  • Pin 4: COMP (Compensation Input)
  • Pin 5: FB (Feedback Input)
  • Pin 6: RST (Reset Input)
  • Pin 7: EN (Enable Input)
  • Pin 8: NC (No Connect)

This PWM controller is designed for low-power applications and features a range of functions, including voltage feed-forward compensation, cycle-by-cycle current limiting, adjustable soft-start, and more.

Manufacturer

The manufacturer of the UCC3804N is Texas Instruments (TI).

Applications

The UCC3804N is commonly used in power supply applications, including offline LED drivers, isolated flyback converters, and power factor correction circuits. It can also be utilized in industrial equipment, household appliances, and automotive systems for controlling power switching operations.

Equivalent

Based on the features and specifications of the UCC3804N, some equivalent products could be:

  • STMicroelectronics' L6565A
  • ON Semiconductor's NCP1396
  • Analog Devices' ADP8860
  • Maxim Integrated's MAX1751

These devices share similar characteristics such as PWM control, voltage feed-forward compensation, and adjustable soft-start. However, please note that each product may have its unique features and specifications, making them not exactly identical but rather equivalent in terms of functionality.

Specifications

Category Integrated Circuits (ICs)Power Management (PMIC)AC DC Converters, Offline Switches Output Isolation -
Internal Switch(s) No Voltage - Breakdown -
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)
Mounting Type Through Hole Base Product Number UCC3804
Package/Case DIP8

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Ratings and Reviews

More
R
R**k 07/04/2023

Marking 73ta16. That or not, i don't know.

7
L
L**m 09/29/2022

The capacity coincides with 9 of 10, one and 47 uf. it came quickly

12
T
T**s 02/11/2022

Good and Serious supplier , Dan and Adele are doing great Job there . Thanks again for your Business and looking forward for the next Chance Ahmed

6
J
J**n 01/29/2021

To kaliningrad 33 days. packed in bubbles. quality and soldering is good. Thanks to the seller.

14

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