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UC2843AD8 The Texas Instruments UC2843AD8 is a current mode PWM controller designed for off-line and DC-DC converters. It operates at up to 500kHz with a 100% maximum duty cycle.
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UC2843AD8

Available from 1 distributors
Mfr Name: UC
UC
The Texas Instruments UC2843AD8 is a current mode PWM controller designed for off-line and DC-DC converters. It operates at up to 500kHz with a 100% maximum duty cycle.
✓ Total Stock: 613 pcs

UC2843AD8 Available from 1 distributor

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613 pcs
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613 pcs On Request 1 On Request On Request 0027G/ On Request On Request
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UC2843AD8 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Duty Cycle
Features
Mounting Type
Package / Case
Topology
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UC2843AD8 Description

Short technical summary and product information.

The UC2843AD8 from Texas Instruments is a high-performance current mode PWM controller. It is optimized for off-line and DC-DC converter applications, offering features such as adjustable switching frequency, current limiting, and undervoltage lockout with hysteresis.

 

This controller operates with a maximum duty cycle of 100% and a switching frequency up to 500kHz. It features a low start-up current of less than 0.5mA and an undervoltage lockout with specific voltage thresholds. The device is available in SOIC and PDIP packages, suitable for surface mount or through-hole applications.

 

Key features include automatic feedforward compensation, pulse-by-pulse current limiting, and a high-current totem pole output. The UC2843AD8 is designed for robust performance in demanding power supply designs.

UC2843AD8 Quick Information

Product Type: PWM Controller
Series: UCx84xA
Canonical Name: UC2843AD8 Current Mode PWM Controller
Subcategory: DC/DC Switching Controllers

UC2843AD8 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

UC2843AD8 Features

  • Peak current mode PWM controller
  • Up to 500kHz switching frequency
  • 100% maximum duty cycle
  • Low start-up current (<0.5mA)
  • Undervoltage lockout with hysteresis

UC2843AD8 Applications

  • Optimized for off-line converters
  • Suitable for DC-DC converters
  • Supports Boost topology
  • Supports Buck topology
  • Supports Flyback topology

UC2843AD8 FAQs

7 frequently asked questions generated from this part’s specifications.
What control mode does UC2843AD8 use?

Peak current mode.

What is the maximum duty cycle of UC2843AD8?

100%.

What is the switching frequency of UC2843AD8?

500kHz.

What topologies are supported by UC2843AD8?

Boost, Buck, Buck boost, Flyback, Forward.

What is the operating temperature range of UC2843AD8?

40°C to 85°C.

What package options are available for UC2843AD8?

The UC2843AD8 is available in SOIC and PDIP packages with surface mount mounting.

What is the start-up current of UC2843AD8?

Less than 0.5mA.

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