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STMicroelectronics MC34063EBD — DC-DC Power Modules

MC34063EBD STMicroelectronics DC-DC Converter, 33 kHz

MPNMC34063EBD
Obsolete

STMicroelectronics MC34063EBD, DC-DC converter, Step-Up/Step-Down, Buck/Boost, Adjustable output, 1.5A switch, 33kHz, 3V-40V input, -40°C~125°C, 8-SOIC, Tube.

$1.6400Ref. price · indicative, final on quote
STMicroelectronics MC34063EBD datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MC34063EBD specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input40V
Voltage - output38V
Voltage - output (Min (Fixed))1.25V
Output current1.5A (Switch)
Frequency - switching33kHz
I/O channels1
Operating temperature-40°C ~ 125°C (TA)
PackageTube
FunctionStep-Up, Step-Down
TopologyBuck, Boost
Case8-SOIC (0.154\", 3.90mm Width)
Output configurationPositive or Negative
Synchronous rectifierNo

Product details

The MC34063EBD switches at 33 kHz.

1.5 A switch — where the output power ceiling sits

In a boost converter from 5 V to 12 V, derating for switch losses and inductor ripple, practical output current lands around 400–600 mA. The wide input range from 3 V to 40 V makes it usable on 5 V, 12 V, and 24 V rails — common in automotive and industrial control boards.

STMicroelectronics lists the MC34063EBD as Obsolete. For new designs, evaluate the MC34063ABD (same SOIC-8 footprint) as a potential drop-in; verify pin compatibility from the datasheet.

Frequently asked questions

What is the replacement for MC34063EBD?

Buyers need a functional equivalent for this obsolete part to complete their BOM or repair.

Is MC34063EBD obsolete?

Directly affects purchasing decision; if obsolete, sourcing alternatives becomes urgent.

What is the pinout of MC34063EBD?

Design engineers must validate pin compatibility with existing layouts before substitution.

Where can I buy MC34063EBD?

Sourcing buyers need to find stock availability and authorized distributors immediately.

What is the price of MC34063EBD?

Buyers need current pricing for budgeting and comparing against alternatives.

MC34063EBD vs MC34063ABD: what are the differences?

Engineers often consider similar ST parts; understanding differences prevents costly redesign.