MC34063 Step UP/Down Switching Regulator IC SMD Package

MC34063 Step UP/Down Switching Regulator IC SMD Package

The MC34063 is a versatile DC-DC switching regulator IC capable of operating in step-up (boost), step-down (buck), and inverting converter configurations. Designed for cost-effective and efficient power conversion, it integrates the key functions required to build compact switching regulators with a minimal number of external components.

The IC includes an internal oscillator, reference voltage, comparator, driver, and current-limiting circuitry. Housed in a surface-mount (SMD) package, the MC34063 is well suited for modern PCB designs where space, efficiency, and flexibility are important.

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Features

• Supports step-up, step-down, and inverting DC-DC converter topologies
• Wide input voltage operating range
• Internal 1.25 V reference voltage
• On-chip oscillator with adjustable switching frequency
• Built-in current limiting for protection
• Internal switch transistor for low-power applications
• Requires few external components
• Low standby power consumption
• Surface-mount SMD package for compact designs

Applications

• DC-DC voltage regulators
• Battery-powered devices
• Portable and handheld electronics
• Embedded systems power supplies
• Automotive and industrial electronics
• LED driver circuits
• Negative voltage generation circuits

mc34063-ic-datasheet