The MC34163 series are monolithic power switching regulators that contain the primary functions required for dc-to-dc converters. This series is specifically designed to be incorporated in step-up, step-down, and voltage-inverting applications with a minimum number of external components. These devices consist of two high gain voltage feedback comparators, temperature compensated reference, controlled duty cycle oscillator, driver with bootstrap capability for increased efficiency, and a high current output switch. Protective features consist of cycle-by-cycle current limiting, and internal thermal shutdown. Also included is a low voltage indicator output designed to interface with microprocessor based systems. These devices are contained in a 16 pin dual-in-line heat tab plastic package for improved thermal conduction. Output Switch Current in Excess of 3.0 A, Operation from 2.5 V to 40 V Input, Low Standby Current, Precision 2% Reference, Controlled Duty Cycle Oscillator, Driver with Bootstrap Capability for Increased Efficiency, Cycle-by-Cycle Current Limiting, Internal Thermal Shutdown Protection, Low Voltage Indicator Output for Direct Microprocessor Interface, Heat Tab Power Package, Moisture Sensitivity Level (MSL) Equals 1.
The MC34163 series are monolithic power switching regulators designed for step‑up, step‑down, and voltage‑inverting dc‑to‑dc converter applications. They integrate high‑gain voltage feedback comparators, a temperature‑compensated reference, a controlled‑duty‑cycle oscillator, a driver with bootstrap capability, and a high‑current output switch, along with protective features such as cycle‑by‑cycle current limiting and internal thermal shutdown.
The document includes detailed electrical characteristics, maximum ratings, pin connections, comparator operation, package dimensions, and ordering information for both the MC34163 and MC33163 devices. It also outlines typical operating waveforms and provides guidance for implementing the regulators in consumer, automotive, computer, and industrial products.
| Input voltage range | 2.5 V to 40 V |
|---|---|
| Output switch current rating | Exceeds 3.0 A |
| Switch collector voltage (Voc) | 40 V |
| Low voltage indicator sink current | 10 mA |
| Thermal resistance, junction‑to‑air | 80 °C/W (DIP‑16) / 94 °C/W (SO‑16W) |
| Package types | PDIP‑16, SO‑16W (tape & reel) |
The devices operate from 2.5 V up to 40 V input.
The output switch can conduct more than 3.0 A.
Both PDIP‑16 and SO‑16W (tape & reel) packages are offered.