component
MC34063ECD-TR
Public Made by Adomby adom
STMicroelectronics DC-DC Converters, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMC34063ECD-TR
STMicroelectronics · DC-DC Converters · SOIC-8
MC34063ECD-TR from STMicroelectronics, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SWC | output | Switch collector for the internal output transistor; rated for 1.5 A maximum at 40 V. |
| 2 | SWE | output | Switch emitter for the internal output transistor; rated for 1.5 A maximum at 40 V. |
| 3 | TC | passive | Timing capacitor connection for oscillator frequency setting; connect external capacitor for desired switching frequency. |
| 4 | GND | power_in | Ground reference and power return for the device. |
| 5 | CII | input | Comparator inverting input for feedback regulation via external resistor divider network. |
| 6 | VCC | power_in | Power supply input voltage; 3 V to 40 V operating range with 0.625 W maximum dissipation for SO-8. |
| 7 | IPK | input | Current limit sense input; connect to sense resistor at switch emitter for peak current limiting. |
| 8 | DRC | output | Voltage driver collector output for external transistor control; 100 mA maximum at 40 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Power supply voltage | VCC | 50 | V | 5 | |||
| Comparator input voltage range | VIR | -0.3 | 40 | V | 5 | ||
| Switch collector voltage | VSWC | 40 | V | 5 | |||
| Switch emitter voltage | VSWE | 40 | V | VSWC = 40V | 5 | ||
| Switch collector to emitter voltage | VCE | 40 | V | 5 | |||
| Driver collector voltage | VDC | 40 | V | 5 | |||
| Driver collector current | IDC | 100 | mA | 5 | |||
| Switch current | ISW | 1.5 | A | 5 | |||
| Power dissipation for SO-8 | PTOT | 0.625 | W | TA = 25°C | 5 | ||
| Operating junction temperature | TJ | 150 | °C | 5 | |||
| Storage temperature range | TSTG | -40 | 150 | °C | 5 | ||
| Operating ambient temperature range | TOP | 0 | 70 | °C | EC series | 5 | |
| Operating supply voltage | VCC | 3 | 40 | V | Features: operating from 3 V to 40 V | 1 | |
| Reference accuracy | -2 | 2 | % | 1 | |||
| Oscillator frequency | fOSC | 24 | 33 | 42 | kHz | VPIN5 = 0V, CT = 1 nF, TA = 25°C | 6 |
| Charge current | ICHG | 24 | 33 | 42 | µA | VCC = 5 to 40V, TA = 25°C | 6 |
| Discharge current | IDISCHG | 140 | 200 | 260 | µA | VCC = 5 to 40V, TA = 25°C | 6 |
| Discharge to charge current ratio | IDISCHG/ICHG | 5.2 | 6.2 | 7.5 | µA | PIN 7 = VCC, TA = 25°C | 6 |
| Current limit sense voltage | VIPK(sense) | 250 | 300 | 350 | mV | ICHG = IDISCHG, TA = 25°C | 6 |
| Saturation voltage, Darlington connection | VCE(sat) | 1 | 1.3 | V | ISW = 1 A, PIN 1, 8 connected | 6 | |
| Saturation voltage, forced | VCE(sat) | 0.45 | 0.7 | V | ISW = 1 A, RPIN8 = 82 to VCC, Forced ~ 20 | 6 | |
| DC current gain | hFE | 50 | 120 | ISW = 1 A, VCE = 5 V, TA = 25°C | 6 | ||
| Collector off-state current | IC(off) | 0.01 | 100 | µA | VCE = 40 V | 6 | |
| Threshold voltage | VTH | 1.225 | 1.25 | 1.275 | V | TA = 25°C | 6 |
| Threshold voltage over temperature | VTH | 1.21 | 1.29 | V | TA = TLOW to THIGH | 6 | |
| Threshold voltage line regulation | Regline | 1 | 5 | mV | VCC = 3 to 40 V | 6 | |
| Input bias current | IIB | -5 | -400 | nA | VIN = 0 V | 6 | |
| Supply current, MC34063E | ICC | 1.5 | 4 | mA | VCC = 5 to 40 V, CT = 1 nF, PIN 7 = VCC, VPIN5 >VTH, PIN 2 = GND, remaining pins open | 7 | |
| Start-up voltage, MC34063E | VSTART-UP | 1.5 | V | TA = 25°C, CT = 1 µF, PIN 5 = 0 | 7 | ||
| Thermal resistance junction-ambient, SO-8 | RthJA | 160 | °C/W | Depends on PCB thermal design | 5 | ||
| Thermal resistance junction-case, SO-8 | RthJC | 20 | °C/W | 5 |
CAD (KiCad official)
- Symbol:
MC34063ECD-TR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
mc34063ecd-tr-etched.step/mc34063ecd-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc34063ecd-tr.step/mc34063ecd-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (23 pp, sha256
90208f64b7a5ca67, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).