component
MC34063AG
Public Made by Adomby adom
MSKSEMI DC-DC Converters, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MC34063AG
MSKSEMI · DC-DC Converters · SOP-8
MC34063AG from MSKSEMI, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SC | output | Switch transistor collector of the internal power switch; saturation voltage is 1.0 V typical at ISW = 1.0 A with pins 1 and 8 connected (1.3 V max) and the switch rating is 1.2 A. |
| 2 | SE | output | Switch transistor emitter; the emitter voltage rating is 32 V maximum when VPIN1 = 32 V. |
| 3 | CT | passive | Timing capacitor connection that sets the oscillator frequency (typically 33 kHz with CT = 1.0 µF at 25 °C) and the charge/discharge currents of 33 µA and 200 µA typical. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | FB | input | Inverting input of the comparator that senses the feedback voltage against the 1.25 V internal reference; comparator input voltage range is -0.3 V to 30 V. |
| 6 | VCC | power_in | Input supply pin; operating range is 3.0 V to 32 V and the absolute maximum supply voltage is 32 V. |
| 7 | Ipk | input | Peak current sense input for the current limiter, with a current-limit sense voltage of 250 mV to 350 mV (300 mV typical). |
| 8 | DC | passive | Driver transistor collector; driver collector voltage is rated 32 V maximum and driver collector current 100 mA maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOP-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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | Vcc | 32 | V | 3 | |||
| Comparator input voltage range | VIR | -0.3 | 30 | V | 3 | ||
| Output transistor collector voltage | Vc(switch) | 32 | V | 3 | |||
| Output transistor emitter voltage | VE(switch) | 32 | V | VPIN1=32V | 3 | ||
| Output transistor collector-emitter voltage | VCE(switch) | 32 | V | 3 | |||
| Driver transistor collector voltage | Vc(driver) | 32 | V | 3 | |||
| Driver transistor collector current | Ic(driver) | 100 | mA | 3 | |||
| Output current | ISW | 1.2 | A | 3 | |||
| Power dissipation | PD | 1.25 | W | 3 | |||
| Storage temperature | Tstg | -65 | 150 | ℃ | 3 | ||
| Operating ambient temperature | TA | 0 | 70 | ℃ | 3 | ||
| Operating voltage range (feature bullet) | 3 | 32 | V | 2 | |||
| Oscillator frequency | fosc | 24 | 33 | 42 | KHz | VPIN5=0V,CT=1.0F,TA=25℃ | 3 |
| Charging current | Ichg | 24 | 33 | 42 | uA | VCC=5.0V~32V,TA=25℃ | 3 |
| Discharging current | Idischg | 140 | 200 | 260 | uA | VCC=5.0V~32V,TA=25℃ | 3 |
| Discharge to charge current ratio | Idischg/Ichg | 5.2 | 6.2 | 7.5 | , | VPIN7=VCC,TA=25℃ | 3 |
| Current limit sense voltage | VIPK | 250 | 300 | 350 | mV | Ichg=Idischg,TA=25℃ | 3 |
| Saturation voltage (PIN1 and PIN8 connected) | VCE(sat) | 1 | 1.3 | V | ISW=1.0A,PIN1,8 connected | 3 | |
| Saturation voltage (RPIN8=82 to VCC) | VCE(sat) | 0.45 | 0.7 | V | ISW=1.0A,RPIN8=82到VCC | 3 | |
| DC current gain | hfe | 50 | 120 | , | ISW=1A,VCE=5V,TA=25℃ | 3 | |
| Collector leakage current | IC(off) | 0.01 | 100 | uA | VCE=30V | 3 | |
| Comparator threshold voltage | Vth | 1.23 | 1.25 | 1.27 | V | TA=25℃ | 4 |
| Input bias current | IIB | -40 | -400 | nA | VIN=0V | 4 | |
| Threshold voltage line regulation | Regline | 1.4 | 5 | mV | VCC=3.0~30V | 4 | |
| Supply current | ICC | 2.5 | 4 | mA | VCC=5.0V~30V,CT=1.0nF,VPIN7=Vcc,VPIN5>Vth,VPIN2=GND,其余悬空 | 4 |
CAD (KiCad official)
- Symbol:
MC34063AG - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
mc34063ag-etched.step/mc34063ag-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc34063ag.step/mc34063ag.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (7 pp, sha256
081c7c1ad68b7178, retrieved 2026-10-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(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).
# MC34063AG
**MSKSEMI** · DC-DC Converters · SOP-8
MC34063AG from MSKSEMI, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SC | output | Switch transistor collector of the internal power switch; saturation voltage is 1.0 V typical at ISW = 1.0 A with pins 1 and 8 connected (1.3 V max) and the switch rating is 1.2 A. |
| 2 | SE | output | Switch transistor emitter; the emitter voltage rating is 32 V maximum when VPIN1 = 32 V. |
| 3 | CT | passive | Timing capacitor connection that sets the oscillator frequency (typically 33 kHz with CT = 1.0 µF at 25 °C) and the charge/discharge currents of 33 µA and 200 µA typical. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | FB | input | Inverting input of the comparator that senses the feedback voltage against the 1.25 V internal reference; comparator input voltage range is -0.3 V to 30 V. |
| 6 | VCC | power_in | Input supply pin; operating range is 3.0 V to 32 V and the absolute maximum supply voltage is 32 V. |
| 7 | Ipk | input | Peak current sense input for the current limiter, with a current-limit sense voltage of 250 mV to 350 mV (300 mV typical). |
| 8 | DC | passive | Driver transistor collector; driver collector voltage is rated 32 V maximum and driver collector current 100 mA maximum. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOP-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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | Vcc | | | 32 | V | | 3 |
| Comparator input voltage range | VIR | -0.3 | | 30 | V | | 3 |
| Output transistor collector voltage | Vc(switch) | | | 32 | V | | 3 |
| Output transistor emitter voltage | VE(switch) | | | 32 | V | VPIN1=32V | 3 |
| Output transistor collector-emitter voltage | VCE(switch) | | | 32 | V | | 3 |
| Driver transistor collector voltage | Vc(driver) | | | 32 | V | | 3 |
| Driver transistor collector current | Ic(driver) | | | 100 | mA | | 3 |
| Output current | ISW | | | 1.2 | A | | 3 |
| Power dissipation | PD | | | 1.25 | W | | 3 |
| Storage temperature | Tstg | -65 | | 150 | ℃ | | 3 |
| Operating ambient temperature | TA | 0 | | 70 | ℃ | | 3 |
| Operating voltage range (feature bullet) | | 3 | | 32 | V | | 2 |
| Oscillator frequency | fosc | 24 | 33 | 42 | KHz | VPIN5=0V,CT=1.0F,TA=25℃ | 3 |
| Charging current | Ichg | 24 | 33 | 42 | uA | VCC=5.0V~32V,TA=25℃ | 3 |
| Discharging current | Idischg | 140 | 200 | 260 | uA | VCC=5.0V~32V,TA=25℃ | 3 |
| Discharge to charge current ratio | Idischg/Ichg | 5.2 | 6.2 | 7.5 |, | VPIN7=VCC,TA=25℃ | 3 |
| Current limit sense voltage | VIPK | 250 | 300 | 350 | mV | Ichg=Idischg,TA=25℃ | 3 |
| Saturation voltage (PIN1 and PIN8 connected) | VCE(sat) | | 1 | 1.3 | V | ISW=1.0A,PIN1,8 connected | 3 |
| Saturation voltage (RPIN8=82 to VCC) | VCE(sat) | | 0.45 | 0.7 | V | ISW=1.0A,RPIN8=82到VCC | 3 |
| DC current gain | hfe | 50 | 120 | |, | ISW=1A,VCE=5V,TA=25℃ | 3 |
| Collector leakage current | IC(off) | | 0.01 | 100 | uA | VCE=30V | 3 |
| Comparator threshold voltage | Vth | 1.23 | 1.25 | 1.27 | V | TA=25℃ | 4 |
| Input bias current | IIB | | -40 | -400 | nA | VIN=0V | 4 |
| Threshold voltage line regulation | Regline | | 1.4 | 5 | mV | VCC=3.0~30V | 4 |
| Supply current | ICC | | 2.5 | 4 | mA | VCC=5.0V~30V,CT=1.0nF,VPIN7=Vcc,VPIN5>Vth,VPIN2=GND,其余悬空 | 4 |
## CAD (KiCad official)
- Symbol: `MC34063AG`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `mc34063ag-etched.step` / `mc34063ag-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mc34063ag.step` / `mc34063ag.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600631687508340736) (7 pp, sha256 `081c7c1ad68b7178`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (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).
[Datasheet PDF](docs/mc34063ag-datasheet.pdf)