Manufacturer Part Number
UC3844AD
Manufacturer
Microchip Technology
Introduction
The UC3844AD is a DC-DC controller used for converting power at high efficiency.
Product Features and Performance
Integrated oscillator for precise frequency control
High-current totem pole output for directly driving a power MOSFET
Internal trimmers for frequency and duty cycle adjustment
Under-voltage lockout with hysteresis
Low start-up current of 0.5mA typical
Product Advantages
Ability to operate with up to 500kHz switching frequency
Can be used for multiple topologies including boost, buck, flyback, and forward converters
Wide voltage supply range of 10V to 30V
Key Technical Parameters
Frequency - Switching: Up to 500kHz
Voltage - Supply (Vcc/Vdd): 10V ~ 30V
Output Type: Transistor Driver
Duty Cycle (Max): 48%
Number of Outputs: 1
Output Configuration: Positive, Isolation Capable
Topology: Boost, Buck, Flyback, Forward
Quality and Safety Features
Thermal shutdown and over-current protection features for safety
Stable operation with a temperature range of 0°C to 70°C
Compatibility
Surface mount technology for integration into a variety of PCB designs
Compatible with standard 14-SOIC mounting and device package
Application Areas
Power supplies for computers and computer peripherals
Telecommunication equipment
Industrial control systems
Product Lifecycle
Discontinued at Digi-Key
Check with manufacturer for availability and potential replacement or upgrade options
Several Key Reasons to Choose This Product
Proven reliability from a recognized manufacturer in power management
Versatile controller accommodating various converter topologies
High efficiency suitable for portable and space-constrained applications
Ease of use due to integrated features that minimize external component count
Continuous operation at high temperatures without performance degradation