ONMC34063ADR2G
Overview
The MC34063ADR2G is a versatile monolithic control circuit containing the primary functions required for DC-to-DC converters. It features an internal temperature compensated reference, a comparator, a controlled duty cycle oscillator with an active current limit circuit, a driver, and a high-current output switch. This component can be configured for step-up (boost), step-down (buck), and voltage-inverting applications with a minimum of external components.
Why Choose This Part
The primary advantage of the MC34063A is its extreme flexibility, allowing for three different power topologies using the same IC. It supports a wide input voltage range from 3V to 40V and provides a 1.5A internal switch current, making it a cost-effective solution for low-to-medium power conversion without the need for an external power transistor.
Applications
Key Specifications
Getting Started
To design with the MC34063A, engineers should use the formulas provided in the datasheet to calculate the timing capacitor, inductor, and sense resistor values for the desired topology. Ensure that the peak switch current does not exceed 1.5A and pay close attention to the PCB layout of the high-current loops to minimize EMI. Prototype the circuit using the SOIC-8 footprint on a breakout board or dedicated evaluation PCB.
MC34063 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Sw. Freq | Temp Range | Voltage - Output (Max) | Stock |
|---|---|---|---|---|
| MC34063ADR2G (this part) | 100k | 0degC ~ 70degC (TA) | 40V | 12,694 |
| MC34063ACD-TR (STMicroelectronics) Tape & Reel | 33k | 0degC ~ 70degC (TA) | 38V | 4,037 |
| MC34063EBD-TR (STMicroelectronics) Tape & Reel | 33k | -40degC ~ 125degC .. | 38V | 18,130 |
| MC34063ADR (Texas Instruments) | 100k | 0degC ~ 70degC (TA) | 40V | 82,727 |
| MC34063ABD-TR (STMicroelectronics) Tape & Reel | 33k | -40degC ~ 85degC (.. | 38V | 59,132 |
