MC34063ADG4

Voltage Regulators - DC DC Switching Regulators Overview

The MC34063ADG4 is a monolithic DC-DC converter control circuit manufactured by Texas Instruments, housed in an 8-pin SOIC surface-mount package. It operates with an input voltage range of 3V to 40V and provides a maximum output current of 1.5A. The device features a temperature-compensated bandgap reference with 2% accuracy and supports adjustable output voltages from 1.25V to 40V. It integrates a duty-cycle controlled oscillator capable of switching frequencies up to 100kHz and includes active current limiting for protection. The component functions as a buck, boost, or inverting regulator within a commercial operating temperature range of 0°C to +70°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-current output switch capable of delivering over 1.5A
• Includes internal temperature-compensated bandgap reference source
• Features active current limiting circuitry for overload protection
• Supports configurable oscillation frequency via external timing capacitor

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down (buck) DC-DC conversion circuits
• Step-up (boost) DC-DC conversion circuits
• Voltage-inverting power supply topologies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DG4' indicates RoHS compliance and lead-free construction during procurement. Confirm the package type matches the required 8-SOIC footprint for PCB layout. Ensure the ordering quantity aligns with tube packaging standards associated with this specific variant. Cross-reference the manufacturer datasheet to confirm current production status and availability before finalizing design integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a cost-effective solution for low-to-medium power DC-DC conversion is required. It is suitable for applications where a single output voltage adjustment is sufficient. Consider the 1.5A peak switch current limit when sizing external inductors and capacitors. Verify that the 100kHz maximum switching frequency meets the electromagnetic interference requirements of the target system.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the widely utilized MC34063 series of switching regulators. Originally developed by Motorola, the product line is now supported by multiple manufacturers including Texas Instruments. The MC34063ADG4 represents the surface-mount version of this classic control IC, maintaining compatibility with legacy designs while offering modern packaging options for automated assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible replacements include the MC34063ADRG4 and MC34063ADR. These variants share identical electrical specifications and pinouts but differ in packaging format, such as tape-and-reel versus tube.