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UC2844D

Part No UC2844D
Manufacturer Texas Instruments
Catalog PMIC - AC DC Converters, Offline Switchers
Description IC PWM BOOST FLYBCK ISO CM 8SOIC
Datasheet
Sample
Rohs State rohs
ECAD Module
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Categories Integrated Circuits
Manufacturer Texas Instruments
Packaging Reel - TR
Status Active
Output Isolation Isolated
Topology Boost, Flyback, Forward
Voltage - Start Up 16V
Supply Voltage - Operating 10 V to 30 V
Duty Cycle 48%
Frequency - Switching Up to 500kHz
Fault Protection Current Limiting
Control Features Frequency Control
Temperature Range - Operating -40°C to 85°C (TA)
Case / Package 8-SOIC
Mounting Surface Mount
Win Source Part Number 081278-UC2844D
Is this a common-used part? Yes
Popularity High
Supply and Demand Status Balance
Ultra Librarian 3D Model Ultra Librarian UC2844D CAD Model

Description

The Texas Instruments UC2844D is a high-performance current mode pulse width modulation (PWM) controller that is widely used in AC to DC converters, off-line converters, DC to DC converters, and a variety of other power supply applications. This versatile integrated circuit is designed to offer precise control of output voltage and current for a broad range of power conversion technologies.

Key Features:

  • Optimized for Off-line and DC to DC Converters: The UC2844D is particularly suited for off-line and DC to DC converter applications, providing efficient and reliable performance.
  • Low Start-up and Operating Current: The device features a low start-up current of typically 1 mA and an operating current of typically 2.5 mA, which enhances the efficiency of the overall system.
  • High Current Totem Pole Output: The totem pole output is capable of swinging 500 mA and 1 A in the sink mode, which is ideal for driving a power MOSFET or IGBT directly.
  • Trimmed Oscillator Discharge Current: The oscillator's discharge current is trimmed to ensure precise duty cycle clamp control, which is critical for consistent and reliable operation.
  • Current Mode Operation: Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
  • Automatic Feed-forward Compensation: This feature helps in maintaining stability and performance over a wide range of input voltages and output loads.
  • Under-Voltage Lockout with Hysteresis: The UC2844D includes an under-voltage lockout with hysteresis to prevent the system from operating at dangerously low voltages.

Applications:

  • Switching power supplies
  • Power converters
  • Battery chargers
  • Power factor correction modules
  • LED drivers

The UC2844D is available in a 14-pin SOIC package and is characterized for operation from -40°C to +85°C. Texas Instruments' commitment to quality and reliability ensures that the UC2844D is a trusted choice for engineers and designers looking to build sophisticated power management systems.

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Pricing & Ordering

Quantity Unit Price Ext. Price
60+ $0.8663 $51.9780
145+ $0.7109 $103.0805
220+ $0.6886 $151.4920
305+ $0.6664 $203.2520
390+ $0.6442 $251.2380
520+ $0.5776 $300.3520
* Prices exclude shipping and taxes. Shipping costs are calculated at checkout.
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Availability: 1,230 pieces
MOQ: 60 pcs
Order Increment : 1 pcs
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