This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

UC3845BDG

High Performance Current Mode PWM Controller

Manufacturer:

ON Semiconductor, LLC
Mfr.Part #:

UC3845BDG
Datasheet:

UC3845BDG Datasheet (PDF)
Case Outline:

751A-03
MSL Temp (°C):

260
Container Type:

REEL
EDA/CAD Models:

Request Free CAD Models for UC3845BDG

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

UC3845BDG General Description

The UC3844B, UC3845B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.

Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, a latch for single pulse metering, and a flip-flop which blanks the output off every other oscillator cycle, allowing output deadtimes to be programmed from 50% to 70%.

These devices are available in an 8-pin dual-in-line and surface mount (SO-8) plastic package as well as the 14-pin plastic surface mount (SO-14). The SO-14 package has separate power and ground pins for the totem pole output stage.

The UCX844B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off-line converters. The UCX845B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).

Key Features

Trimmed Oscillator for Precise Frequency Control
Oscillator Frequency Guaranteed at 250 kHz
Current Mode Operation to 500 kHz Output Switching Frequency
Output Deadtime Adjustable from 50% to 70%
Automatic Feed Forward Compensation
Latching PWM for Cycle-By-Cycle Current Limiting
Internally Trimmed Reference with Undervoltage Lockout
High Current Totem Pole Output
Undervoltage Lockout with Hysteresis
Low Startup and Operating Current
Pb-Free Packages are Available

Specifications

Status	Active	Case Outline	751A-03
MSL Temp (°C)	260	Container Type	REEL

Service Policies and Others

After-Sales & Settlement Related

Payment

Payment Method

TT/Wire Transfer

Paypal

Western Union

Money Gram

For alternative payment channels, please reach out to us at:

[email protected]

Shipping & Packing

Shipping Method

Fedex

UPS

DHL

NTN

Packing

AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

Warranty

365-Day Product

Quality Guarantee

We promise to provide 365 days quality assurance service for all our products.

Ratings and Reviews

N**s 12/23/2023

VENDEDOR RECOMENDADO • 5 Estrellas • Excelente servicio • Producto de alta calidad = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = SELLER RECOMMENDED • 5 Stars • Excellent Service • High quality products = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = VENDEDOR RECOMENDADO • 5 Estrelas • Excelente Serviço • Produto de Alta Qualidade = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = SELLER RECOMMENDED • 5 Stars • Excellent Service • High quality product = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

L**n 02/02/2023

Very bright package arrived for weeks.

M**n 11/11/2022

Arrived in karaganda in 53 days.

J**a 10/24/2022

Took a month to ship out the item. recommended to others, choose other sellers.