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UC2843D8 The Texas Instruments UC2843D8 is a current mode PWM controller designed for off-line and DC-to-DC converters. It operates with voltages from 12V to 28V and frequencies up to 500kHz.
Mfr Part #:

UC2843D8

Available from 5 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC2843D8 is a current mode PWM controller designed for off-line and DC-to-DC converters. It operates with voltages from 12V to 28V and frequencies up to 500kHz.
✓ Total Stock: 373,159 pcs
$ Price Range: $0.66

UC2843D8 Available from 5 distributors

✓ Authorised
✓ Non-Authorised
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

UC2843D8 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
SVHC Present
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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UC2843D8 Description

Short technical summary and product information.

The Texas Instruments UC2843D8 is a current mode PWM controller suitable for off-line and DC-to-DC fixed-frequency applications. It features a low start-up current of less than 1mA and operates within a voltage range of 12V to 28V.

 

Key electrical specifications include operation up to 500kHz, a maximum duty cycle of 97%, and support for various topologies such as Boost, Buck, Buck-Boost, Flyback, and Forward. The controller includes features like automatic feedforward compensation, pulse-by-pulse current limiting, enhanced load-response characteristics, undervoltage lockout with hysteresis, double-pulse suppression, and a high-current totem-pole output.

 

This device is housed in an 8-SOIC package and operates across a temperature range of -40°C to 85°C. The surface mountable design makes it suitable for various power management circuits. The UC2843D8 is designed to implement current-mode control schemes with a minimal number of external components.

UC2843D8 Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC2843D8 Current Mode PWM Controller
Subcategory: DC DC Switching Controllers

UC2843D8 Compliance

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

UC2843D8 Estimated Pricing

Qty Low High
1+ $0.66 $0.66

Estimated market price range - modelled values for guidance only, not live distributor offers.

UC2843D8 Features

  • Current mode PWM controller for power conversion.
  • Operates from 12V to 28V input voltage.
  • Supports frequencies up to 500kHz.
  • Features undervoltage lockout and current limiting.
  • Housed in an 8-SOIC surface mount package.

UC2843D8 Applications

  • Ideal for off-line converters.
  • Suitable for DC-to-DC power supplies.
  • Used in Boost converter designs.
  • Applicable for Buck-Boost circuits.
  • Supports Flyback and Forward topologies.

UC2843D8 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC2843D8?

The UC2843D8 operates from 12V to 28V.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C.

What package is the UC2843D8 available in?

The UC2843D8 is available in an 8-SOIC surface-mount package.

What topologies does the UC2843D8 support?

It supports boost, buck, buck-boost, flyback, and forward topologies.

What is the maximum switching frequency?

The switching frequency is up to 500kHz.

Does the UC2843D8 include current limiting?

Yes, it has pulse-by-pulse current limiting.

What packaging options are available for the UC2843D8?

It is available in tubes of 75 and large tape-and-reel of 2500 units.

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