MC34063ECD

Voltage Regulators - DC DC Switching Regulators Overview

The MC34063ECD is a monolithic DC-DC converter control circuit manufactured by STMicroelectronics, housed in an 8-pin SOIC surface-mount package. It operates within an input voltage range of 3 V to 40 V and supports switching frequencies up to 100 kHz. The device features an internal high-current output switch capable of delivering over 1.5 A, a temperature-compensated reference with 2% accuracy, and active current limiting. Designed for step-down, step-up, and voltage-inverting topologies, it requires minimal external components. The quiescent current is typically 2.5 mA, and the maximum operating temperature is rated at 70 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-current output switch exceeding 1.5 A capability for direct load driving.
• Includes an internal temperature-compensated reference ensuring stable regulation.
• Features active current limiting circuitry to protect against overload conditions.
• Supports versatile DC-DC conversion topologies including buck, boost, and inverter configurations.

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down (buck) voltage conversion circuits
• Step-up (boost) voltage conversion circuits
• Voltage-inverting power supply designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Confirm that the component's commercial temperature rating aligns with the thermal constraints of the target application environment. Ensure compatibility with standard surface-mount reflow soldering profiles suitable for SOIC packages during manufacturing integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing cost-effective power supplies requiring a single-chip solution for basic DC-DC conversion tasks. It is suitable for applications where moderate output currents are sufficient and board space is limited due to its compact surface-mount form factor. Consider the 100 kHz switching frequency limit when determining external passive component values for desired ripple performance.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the widely recognized MC34063 series of switching regulator controllers, originally defined by Motorola and now produced by multiple manufacturers including STMicroelectronics. The series serves as a fundamental building block for low-power isolated and non-isolated power converters. The ECD variant specifically denotes the industrial/commercial grade version packaged in a small outline integrated circuit format for surface mounting.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements include the MC34063AEC and MC34063APD from various manufacturers. Cross-reference datasheets to ensure equivalent electrical characteristics, particularly regarding maximum switch current and operating temperature ranges, before substituting in existing designs.