Datasheet4U Logo Datasheet4U.com

UC1844A-EP Datasheet Current-Mode PWM Controllers

Manufacturer: Texas Instruments

Download the UC1844A-EP datasheet PDF. This datasheet also includes the UC1842A-EP variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC1842A-EP-etcTI.pdf) that lists specifications for multiple related part numbers.

General Description

The UC1842A/3A/4A/5A family of control ICs is a pin-for-pin compatible improved version of the UC3842/3/4/5 family.

Providing the necessary

Overview

UC1842A-EP, UC1843A-EP, UC1844A-EP, UC1845A-EP CURRENT-MODE PWM CONTROLLER D Controlled Baseline − One Assembly/Test Site, One Fabrication Site D Extended Temperature Performance of −55°C to 125°C D Enhanced Diminishing Manufacturing Sources (DMS) Support D Enhanced Product Change Notification D Qualification Pedigree† D Optimized for Off-line and DC-to-DC Converters D Low Start Up Current (<0.5 mA) D Trimmed Oscillator Discharge Current † Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range.

This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life.

Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.

Key Features

  • to control current mode switched mode power supplies, this family has the following improved features. Start up current is guaranteed to be less than 0.5 mA. Oscillator discharge is trimmed to 8.3 mA. During under voltage lockout, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V. The difference between members of this family are shown in the table below. PART NUMBER UC1842A UC1843A UC1844A UC1845A UVLO ON 16 V 8.5 V 16 V 8.5 V UVLO OFF 10 V 7.9 V 10 V 7.9 V MAXIMU.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
Unitrode Logo UC1844A Current Mode PWM Controller Unitrode
LINFINITY Logo UC1844A CURRENT MODE PWM CONTROLLER LINFINITY

More Datasheets from Texas Instruments

Part Number Description
UC1844A-SP current-mode PWM controller
UC1844A Current-Mode PWM Controllers
UC1844 Current-Mode PWM Controllers
UC1844J Current-Mode PWM Controller
UC1844L Current-Mode PWM Controller
UC1842 Current-Mode PWM Controller
UC1842A Current-Mode PWM Controllers
UC1842A-EP Current-Mode PWM Controllers
UC1842A-SP current-mode PWM controller
UC1842J Current-Mode PWM Controller