component
AP2127K-3.3TRG1-MS
Public Made by Adomby adom
MSKSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AP2127K-3.3TRG1-MS
MSKSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
AP2127K-3.3TRG1-MS from MSKSEMI, in a SOT-23-5. 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 | VIN | power_in | Power input port; the datasheet gives an input voltage range of 1.2 V to 6 V, and a 1 uF or larger input capacitor should be placed close to VIN and GND. |
| 2 | GND | power_in | Ground pin; the input and output capacitor ground connections must return directly to this pin using short, wide traces. |
| 3 | EN | input | Enable control; pulling EN low puts the device into shutdown mode, with EN rising threshold 1.7 V and EN falling threshold 0.6 V. |
| 4 | NC | unconnected | Floating pin, no internal connection in the fixed-output variant. |
| 5 | VOUT | power_out | Power output port; rated for 600 mA output current with 1100 mA typical current limit, and requires an output capacitor of 1 uF to 22 uF effective with ESR above 1 mΩ placed close to VOUT and GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 1.2 | 6 | V | 7 | ||
| Output voltage accuracy | -2 | 2 | % | ILOAD =0.1mA | 7 | ||
| Input voltage range (recommended) | VIN | 1.2 | 6 | V | 6 | ||
| Application junction temperature range | -40 | 125 | oC | 6 | |||
| Application ambient temperature range | -40 | 85 | oC | 6 | |||
| VIN to GND maximum voltage | VIN | -0.3 | 7 | V | 6 | ||
| VOUT, EN to GND maximum voltage | VOUT, EN | -0.3 | 6 | V | 6 | ||
| VOUT to VIN maximum voltage | VOUT | -6 | 0.3 | V | 6 | ||
| Junction temperature | 150 | oC | 6 | ||||
| Storage temperature range | -60 | 150 | oC | 6 | |||
| Soldering temperature (10 sec) | 260 | oC | Soldering, 10 sec. | 6 | |||
| ESD HBM | 2 | KV | HBM | 6 | |||
| ESD MM | 200 | V | MM | 6 | |||
| ESD CDM | 2 | KV | CDM | 6 | |||
| Thermal resistance SOT-23-5 junction-to-ambient | θJA | 200 | oC/W | TA = 25°C, EVB board | 6 | ||
| Dropout voltage at 3V output | VDROP_3V | 0.32 | V | ILOAD =600mA; VOUT ≥ 3V | 7 | ||
| Quiescent current | IQ | 2 | μA | ILOAD = 0mA | 7 | ||
| Shutdown current | ISD | 0.01 | 0.5 | μA | VEN = 0V, VOUT = 0V | 7 | |
| EN rising threshold | VIH | 1.7 | V | EN Rising | 7 | ||
| EN falling threshold | VIL | 0.6 | V | EN Falling | 7 | ||
| EN input current | IEN | 10 | 100 | nA | VEN = 5V | 7 | |
| Input voltage regulation | ΔLINE | 0.2 | % | ILOAD =30mA, 1.5V ≤ VIN ≤ 5.5V or (VOUT + 0.2V) ≤ VIN ≤ 5.5V | 7 | ||
| Load voltage regulation | ΔLOAD | 0.2 | % | 10mA ≤ ILOAD ≤ 0.3A | 7 | ||
| Output current limit | ILIM | 600 | mA | VOUT =0V | 7 | ||
| Overtemperature shutdown temperature | TSD | 155 | °C | ILOAD =10mA | 7 | ||
| Overtemperature shutdown hysteresis | ΔTSD | 15 | °C | 7 | |||
| Discharge resistance | RDC | 80 | Ω | EN = 0V, VOUT = 0.1V | 7 |
CAD (KiCad official)
- Symbol:
AP2127K-3.3TRG1-MS - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
ap2127k-3-3trg1-ms-etched.step/ap2127k-3-3trg1-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap2127k-3-3trg1-ms.step/ap2127k-3-3trg1-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (13 pp, sha256
38487c22776c83fc, retrieved 2026-10-27, 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), consensusoff(skipped (clean text read)), 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).
# AP2127K-3.3TRG1-MS
**MSKSEMI** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
AP2127K-3.3TRG1-MS from MSKSEMI, in a SOT-23-5. 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 | VIN | power_in | Power input port; the datasheet gives an input voltage range of 1.2 V to 6 V, and a 1 uF or larger input capacitor should be placed close to VIN and GND. |
| 2 | GND | power_in | Ground pin; the input and output capacitor ground connections must return directly to this pin using short, wide traces. |
| 3 | EN | input | Enable control; pulling EN low puts the device into shutdown mode, with EN rising threshold 1.7 V and EN falling threshold 0.6 V. |
| 4 | NC | unconnected | Floating pin, no internal connection in the fixed-output variant. |
| 5 | VOUT | power_out | Power output port; rated for 600 mA output current with 1100 mA typical current limit, and requires an output capacitor of 1 uF to 22 uF effective with ESR above 1 mΩ placed close to VOUT and GND. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 1.2 | | 6 | V | | 7 |
| Output voltage accuracy | | -2 | | 2 | % | ILOAD =0.1mA | 7 |
| Input voltage range (recommended) | VIN | 1.2 | | 6 | V | | 6 |
| Application junction temperature range | | -40 | | 125 | oC | | 6 |
| Application ambient temperature range | | -40 | | 85 | oC | | 6 |
| VIN to GND maximum voltage | VIN | -0.3 | | 7 | V | | 6 |
| VOUT, EN to GND maximum voltage | VOUT, EN | -0.3 | | 6 | V | | 6 |
| VOUT to VIN maximum voltage | VOUT | -6 | | 0.3 | V | | 6 |
| Junction temperature | | | | 150 | oC | | 6 |
| Storage temperature range | | -60 | | 150 | oC | | 6 |
| Soldering temperature (10 sec) | | | | 260 | oC | Soldering, 10 sec. | 6 |
| ESD HBM | | | 2 | | KV | HBM | 6 |
| ESD MM | | | 200 | | V | MM | 6 |
| ESD CDM | | | 2 | | KV | CDM | 6 |
| Thermal resistance SOT-23-5 junction-to-ambient | θJA | | 200 | | oC/W | TA = 25°C, EVB board | 6 |
| Dropout voltage at 3V output | VDROP_3V | | 0.32 | | V | ILOAD =600mA; VOUT ≥ 3V | 7 |
| Quiescent current | IQ | | 2 | | μA | ILOAD = 0mA | 7 |
| Shutdown current | ISD | | 0.01 | 0.5 | μA | VEN = 0V, VOUT = 0V | 7 |
| EN rising threshold | VIH | | 1.7 | | V | EN Rising | 7 |
| EN falling threshold | VIL | | 0.6 | | V | EN Falling | 7 |
| EN input current | IEN | | 10 | 100 | nA | VEN = 5V | 7 |
| Input voltage regulation | ΔLINE | | 0.2 | | % | ILOAD =30mA, 1.5V ≤ VIN ≤ 5.5V or (VOUT + 0.2V) ≤ VIN ≤ 5.5V | 7 |
| Load voltage regulation | ΔLOAD | | 0.2 | | % | 10mA ≤ ILOAD ≤ 0.3A | 7 |
| Output current limit | ILIM | | 600 | | mA | VOUT =0V | 7 |
| Overtemperature shutdown temperature | TSD | | 155 | | °C | ILOAD =10mA | 7 |
| Overtemperature shutdown hysteresis | ΔTSD | | 15 | | °C | | 7 |
| Discharge resistance | RDC | | 80 | | Ω | EN = 0V, VOUT = 0.1V | 7 |
## CAD (KiCad official)
- Symbol: `AP2127K-3.3TRG1-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ap2127k-3-3trg1-ms-etched.step` / `ap2127k-3-3trg1-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap2127k-3-3trg1-ms.step` / `ap2127k-3-3trg1-ms.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [MSKSEMI datasheet](docs/ap2127k-3-3trg1-ms-datasheet.pdf) (13 pp, sha256 `38487c22776c83fc`, retrieved 2026-10-27, 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 `off` (skipped (clean text read)), 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/ap2127k-3-3trg1-ms-datasheet.pdf)