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UC3845D +BOM

Current mode controller

UC3845D Information

Description

The Texas Instruments UC3845D is a microcontroller-based PWM controller IC designed for high-efficiency DC-DC conversion in various applications, including power supplies, LED drivers, and industrial control systems. It features synchronous rectification, error flags, and overcurrent protection for reliable operation. This IC offers high-power density, low standby current, and flexible frequency range, making it suitable for small size solutions. Its digital signal processing capabilities enable precision control, while cycle-by-cycle current limiting ensures safe operation. The UC3845D also features soft-start input for gradual turn-on and fault-tolerant operation for reliability. In summary, the UC3845D is a versatile PWM controller IC that provides high efficiency, flexibility, and reliability in various power management applications.

Features

The UC3845D features include:

  • Microcontroller-based power supplies
  • Synchronous rectification for high efficiency
  • Error flags for monitoring status
  • High-efficiency DC-DC conversion
  • PWM control for reliable power
  • Overcurrent protection for safe operation
  • Soft-start input for gradual turn-on
  • Pulse-width modulation for efficient power transfer
  • Fault-tolerant operation for reliability

These features make the UC3845D suitable for various applications such as switch mode supplies, LED drivers, industrial power supplies, solar inverters, battery chargers, and automotive electronics.

Package

The package type of UC3845D is SOIC-14 (Small Outline Integrated Circuit - 14 pins).

Pinout

The UC38D5 is a PWM controller IC from Texas Instruments, designed for microcontroller-based power supplies. It has a SOIC-14 package with 14 pins. Here's the pinout: 1. VCC: Power supply voltage 2. GND: Ground 3. COMP: Compensation input 4. FB: Feedback input 5. OUT: Output 6. SYNC: Synchronization input 7. CLR: Clear input 8. SET: Set input 9-14: Unused The UC38D5 is a high-efficiency DC-DC converter with synchronous rectification, overcurrent protection, and error flags for monitoring status. It's suitable for applications such as LED drivers, switch mode supplies, and industrial power supplies.

Manufacturer

The manufacturer of the UC3845D is Texas Instruments (TI). Texas Instruments is a US-based technology company that specializes in developing and manufacturing analog, embedded processing, digital signal processing, and other semiconductor innovations. TI offers a wide range of products, including integrated circuits, sensors, high-performance processors, and microcontrollers, which are used in various industries such as automotive, consumer electronics, healthcare, industrial, industrial lighting, aerospace, defense, and communications.

Applications

The UC3845D is a PWM controller IC suitable for various applications, including:

  • Power supply solutions
  • LED driver efficiency
  • Switch mode supplies
  • Industrial power supplies
  • Solar inverter use
  • Battery charger design
  • Automotive electronics

It's an efficient and reliable component for managing power in various electronic devices.

Equivalent

Based on my analysis, the equivalent products of UC3845D are:

  • UC3854A
  • UC3847A
  • UC3848A
  • UC3849A

These products share similar features such as PWM control, synchronous rectification, and overcurrent protection, making them suitable alternatives for applications requiring high-efficiency DC-DC conversion.

Specifiche

Topology Boost, Buck, Buck boost, Flyback, Forward Control mode Peak current mode
Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 500
Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology UVLO thresholds on/off (V) 8.4/7.6
Operating temperature range (°C) 0 to 70 Rating Catalog
Gate drive (typ) (A) 1 Vin (max) (V) 28
Package/Case SOIC (D)-14

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Valutazioni e recensioni

Di più
J
J**e 02/15/2024

Received all in full, as the seller-100 pieces. plus two pieces bonus. the seller recommend.

9
A
A**n 08/05/2022

Good quality. Well packaged. Thanks for the fast shipping!

6
S
S**l 10/13/2021

Good value for money.

1
N
N**s 01/21/2021

Good antenna, perfect for esp 07.

5

Recensioni

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