UC2835D/70053

Overview

The UC2835D is a linear regulator controller IC manufactured by Texas Instruments, originally part of the Unitrode product line. It features a positive, fixed output configuration housed in an 8-SOIC package. The device operates with an input voltage range of 5.2V to 35V and draws a supply current of 3.75mA. It supports surface mount installation and functions within a temperature range of -25°C to 85°C.

Feature Summary

• Linear regulator controller designed for positive, fixed output applications
• Operates across a wide input voltage range from 5.2V to 35V
• Low supply current consumption of 3.75mA for efficient power management

Applications

• General purpose linear voltage regulation circuits
• Power supply designs requiring fixed positive output control
• Embedded systems utilizing SOIC packaged controllers

Procurement Notes

Verify the manufacturer designation carefully, as the UC2835 series is currently produced by Texas Instruments following historical acquisitions. Confirm the specific suffix 'D' indicates the 8-SOIC package variant. Ensure compatibility with existing board layouts for surface-mount assembly. Check for RoHS compliance status if environmental regulations apply to the final equipment. Validate that the original Unitrode branding does not imply obsolete stock availability.

Selection Notes

Select this component when a fixed positive linear regulator controller is required within the specified voltage window. The 8-SOIC package suits space-constrained surface-mount designs. Consider the operating temperature range of -25°C to 85°C against environmental conditions. Evaluate the 3.75mA supply current against system power budgets. Ensure the design topology matches the single-output capability of this controller.

Part Context

The UC2835 belongs to a family of linear regulator controllers historically associated with Unitrode before Texas Instruments acquired the semiconductor division. The 'UC' prefix typically denotes Unitrode-derived specifications now maintained under TI's portfolio. This specific model represents a standard industrial-grade controller widely used in established power supply architectures.

Replacement Considerations

Direct substitutes include the UC2835DG4 and UC3836N. Verify pinout compatibility and electrical parameter alignment before substitution. Cross-reference datasheets to ensure equivalent performance characteristics.