MC34063ECD-TR
Overview
The MC34063ECD-TR 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.
Why Choose This Part
The device operates over a wide input voltage range from 3.0V to 40V, making it suitable for various power bus standards. Its simple architecture allows for a low external parts count, reducing overall BOM cost and PCB footprint for basic power regulation tasks.
Applications
Getting Started
Designers should use the equations provided in the datasheet to calculate the timing capacitor, inductor value, and sense resistor for the desired switching frequency and current limit. Since this is a switching regulator, careful attention to PCB layout is required to minimize EMI and ensure stable operation of the feedback loop.
MC34063 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Sw. Freq | Temp Range | Voltage - Output (Max) | Stock |
|---|---|---|---|---|
| MC34063ECD-TR (this part) Tape & Reel | — | — | — | 7,939 |
| MC34063ADR2G (onsemi) | 100k | 0degC ~ 70degC (TA) | 40V | 12,694 |
| MC34063ACD-TR Tape & Reel | 33k | 0degC ~ 70degC (TA) | 38V | 4,037 |
| MC34063EBD-TR Tape & Reel | 33k | -40degC ~ 125degC .. | 38V | 18,130 |
| MC34063ADR (Texas Instruments) | 100k | 0degC ~ 70degC (TA) | 40V | 82,727 |
| MC34063ABD-TR Tape & Reel | 33k | -40degC ~ 85degC (.. | 38V | 59,132 |
