E-UC2844BD1013TR

DC DC Switching Controllers Overview

The UC2844BD1013TR is a current mode PWM controller manufactured by STMicroelectronics, designed for off-line or DC-to-DC fixed-frequency applications. It operates within a supply voltage range of 10V to 30V and supports switching frequencies up to 500kHz. The device features a maximum duty cycle of 48% and utilizes an 8-SOIC surface-mount package. It provides one positive isolated output configured for boost and flyback topologies. The component functions reliably across a junction temperature range of 0°C to 70°C.

DC DC Switching Controllers Feature Summary

• Implements current mode control schemes with minimal external component requirements
• Includes internal under-voltage lockout with hysteresis for stable startup
• Features a high-current totem-pole output stage suitable for driving N-channel MOSFETs

DC DC Switching Controllers Applications

• Off-line power supply designs
• Flyback converter implementations
• Boost converter architectures

DC DC Switching Controllers Procurement Notes

Verify the manufacturer part number UC2844BD1013TR against official STMicroelectronics documentation to ensure authenticity. Confirm that the specific suffix corresponds to the tape-and-reel packaging format required for automated assembly processes. Cross-reference the datasheet specifications regarding thermal performance and electrical limits to validate suitability for the intended operational environment before finalizing procurement decisions.

DC DC Switching Controllers Selection Notes

Select this component when designing systems requiring current-mode control with a maximum duty cycle limited to approximately 48%. It is appropriate for applications needing a start-up current below 0.5mA and operating voltages between 10V and 30V. Ensure the design accommodates the 8-SOIC package dimensions and thermal characteristics specified in the official product data sheet.

DC DC Switching Controllers Part Context

This part belongs to the UC284xB family of control ICs, which are engineered for precise duty cycle control and current limiting. The family differentiates members through under-voltage lockout thresholds and duty cycle ranges, with the UC2844B variant specifically incorporating an internal toggle flip-flop to limit the maximum duty cycle.

DC DC Switching Controllers Replacement Considerations

The UC2844BN serves as a pin-compatible alternative available in a PDIP-8 package. Verify that the through-hole configuration meets mechanical constraints if surface-mount options are unavailable.