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UC2844N The Texas Instruments UC2844N is a current mode PWM controller designed for off-line and DC-to-DC converters. It operates up to 500kHz and features undervoltage lockout with hysteresis.
Mfr Part #:

UC2844N

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC2844N is a current mode PWM controller designed for off-line and DC-to-DC converters. It operates up to 500kHz and features undervoltage lockout with hysteresis.
✓ Total Stock: 5,600 pcs
$ Price Range: $0.56

UC2844N Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
3,600 pcs
On Request
3600 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
2,000 pcs
On Request
2000 pcs On Request 1 On Request On Request On Request On Request On Request
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.

UC2844N 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
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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UC2844N Description

Short technical summary and product information.

The UC2844N from Texas Instruments is a versatile current mode PWM controller IC. It is optimized for use in both off-line and DC-to-DC converter applications, requiring a minimal number of external components for implementation.

 

Key electrical features include a low start-up current of less than 1mA, automatic feedforward compensation, and pulse-by-pulse current limiting. The device also incorporates undervoltage lockout with hysteresis, double-pulse suppression, and a high-current totem-pole output stage designed for driving N-channel MOSFETs. It supports operation up to 500kHz and offers frequency control.

 

This controller operates within a voltage range of 12V to 28V and has a maximum duty cycle of 48%. It supports multiple topologies including Boost, Buck, Flyback, and Forward configurations. The operating temperature range is -40°C to 85°C.

 

The UC2844N is available in an 8-PDIP through-hole package (8-DIP (0.300", 7.62mm)).

UC2844N Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC2844N Current Mode PWM Controller
Subcategory: Current Mode

UC2844N Compliance

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

UC2844N Estimated Pricing

Qty Low High
1+ $0.56 $0.56

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

UC2844N Features

  • Optimized for off-line and DC-to-DC converters.
  • Low start-up current less than 1mA.
  • Pulse-by-pulse current limiting included.
  • Undervoltage lockout with hysteresis.
  • High-current totem-pole output.

UC2844N Applications

  • Used in offline flyback power supplies.
  • Ideal for boost and buck converters.
  • Suitable for forward converter designs.
  • Applicable in isolated power supply modules.

UC2844N FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC2844N?

The UC2844N operates from 12V to 28V.

What is the operating temperature range of the UC2844N?

The UC2844N operates from -40°C to 85°C.

What package does the UC2844N come in?

The UC2844N is available in an 8-DIP (0.300", 7.62mm) through-hole package.

What topologies does the UC2844N support?

The UC2844N supports boost, buck, flyback, and forward topologies.

What is the maximum switching frequency of the UC2844N?

The UC2844N supports switching frequencies up to 500kHz.

Does the UC2844N have pulse-by-pulse current limiting?

Yes, the UC2844N includes pulse-by-pulse current limiting.

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