component
78D05L-TN3-R
Public Made by Adomby adom
UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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78D05L-TN3-R
UTC Unisonic Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)
78D05L-TN3-R from UTC Unisonic Tech, in a TO-252-2(DPAK). 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 | INPUT | power_in | Unregulated input voltage to the regulator; the absolute maximum input voltage is 35 V. |
| 2 | GND | power_in | Ground (common) pin of the regulator, also the reference for the output voltage. |
| 3 | OUTPUT | power_out | Regulated 5 V output for the 78D05, rated up to 0.5 A output current with 1.2 A typical peak output current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | TO-252-2(DPAK) |
| Category | Power Management (PMIC) |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output Voltage | VOUT | 4.8 | 5 | 5.2 | V | IOUT=5mA~0.5A | 4 |
| Output Voltage | VOUT | 4.75 | 5.25 | V | VIN =7.5 |
4 | |
| Load Regulation | ΔVOUT | 50 | mV | IOUT=5mA~0.5A | 4 | ||
| Load Regulation | ΔVOUT | 25 | mV | IOUT=5mA~200mA | 4 | ||
| Line Regulation | ΔVOUT | 50 | mV | VIN =7V~25V | 4 | ||
| Quiescent Current | IQ | 8 | mA | IOUT=0.5A | 4 | ||
| Quiescent Current Change | ΔIQ | 1 | mA | VIN =7.5~20V | 4 | ||
| Quiescent Current Change | ΔIQ | 0.5 | mA | IOUT=5mA~0.5A | 4 | ||
| Ripple Rejection | RR | 62 | 80 | dB | VIN =8~18V, f=120Hz | 4 | |
| Output Noise Voltage | eN | 40 | μV | 10Hz≤f≤100kHz | 4 | ||
| Temperature coefficient of VOUT | ∆VOUT/∆T | -0.6 | mV/°C | IOUT=5mA | 4 | ||
| Peak Output Current | IPEAK | 1.2 | A | 4 | |||
| Short-Circuit Current | ISC | 250 | mA | VIN=VOUT+19V | 4 | ||
| Dropout Voltage | VD | 2 | V | 4 | |||
| Input Voltage | VIN | 35 | V | 4 | |||
| Output Current | IOUT | 0.5 | A | 4 | |||
| Power Dissipation | PD | 10 | W | TC=25°C, TO-251/TO-252 (package association inferred from layout) | 4 | ||
| Operating Junction Temperature | TJ | -20 | 150 | °C | 4 | ||
| Storage Temperature | TSTG | -65 | 150 | °C | 4 | ||
| Junction to Case | θJC | 12.5 | °C/W | TO-251/TO-252 package (association inferred from layout) | 4 |
CAD (KiCad official)
- Symbol:
78D05L-TN3-R - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files:
78d05l-tn3-r-etched.step/78d05l-tn3-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);78d05l-tn3-r.step/78d05l-tn3-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC Unisonic Tech datasheet (9 pp, sha256
d4475e10472bbb50, retrieved 2026-10-18, tier: lcsc) - 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).
# 78D05L-TN3-R
**UTC Unisonic Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)
78D05L-TN3-R from UTC Unisonic Tech, in a TO-252-2(DPAK). 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 | INPUT | power_in | Unregulated input voltage to the regulator; the absolute maximum input voltage is 35 V. |
| 2 | GND | power_in | Ground (common) pin of the regulator, also the reference for the output voltage. |
| 3 | OUTPUT | power_out | Regulated 5 V output for the 78D05, rated up to 0.5 A output current with 1.2 A typical peak output current. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | TO-252-2(DPAK) |
| Category | Power Management (PMIC) |
| Pins | 3 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output Voltage | VOUT | 4.8 | 5 | 5.2 | V | IOUT=5mA~0.5A | 4 |
| Output Voltage | VOUT | 4.75 | | 5.25 | V | VIN =7.5~20V, IOUT=5mA~0.5A | 4 |
| Load Regulation | ΔVOUT | | | 50 | mV | IOUT=5mA~0.5A | 4 |
| Load Regulation | ΔVOUT | | | 25 | mV | IOUT=5mA~200mA | 4 |
| Line Regulation | ΔVOUT | | | 50 | mV | VIN =7V~25V | 4 |
| Quiescent Current | IQ | | | 8 | mA | IOUT=0.5A | 4 |
| Quiescent Current Change | ΔIQ | | | 1 | mA | VIN =7.5~20V | 4 |
| Quiescent Current Change | ΔIQ | | | 0.5 | mA | IOUT=5mA~0.5A | 4 |
| Ripple Rejection | RR | 62 | 80 | | dB | VIN =8~18V, f=120Hz | 4 |
| Output Noise Voltage | eN | | 40 | | μV | 10Hz≤f≤100kHz | 4 |
| Temperature coefficient of VOUT | ∆VOUT/∆T | | -0.6 | | mV/°C | IOUT=5mA | 4 |
| Peak Output Current | IPEAK | | 1.2 | | A | | 4 |
| Short-Circuit Current | ISC | | 250 | | mA | VIN=VOUT+19V | 4 |
| Dropout Voltage | VD | | 2 | | V | | 4 |
| Input Voltage | VIN | | | 35 | V | | 4 |
| Output Current | IOUT | | | 0.5 | A | | 4 |
| Power Dissipation | PD | | | 10 | W | TC=25°C, TO-251/TO-252 (package association inferred from layout) | 4 |
| Operating Junction Temperature | TJ | -20 | | 150 | °C | | 4 |
| Storage Temperature | TSTG | -65 | | 150 | °C | | 4 |
| Junction to Case | θJC | | 12.5 | | °C/W | TO-251/TO-252 package (association inferred from layout) | 4 |
## CAD (KiCad official)
- Symbol: `78D05L-TN3-R`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files: `78d05l-tn3-r-etched.step` / `78d05l-tn3-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `78d05l-tn3-r.step` / `78d05l-tn3-r.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [UTC Unisonic Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175496925696000) (9 pp, sha256 `d4475e10472bbb50`, retrieved 2026-10-18, tier: lcsc)
- **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/78d05l-tn3-r-datasheet.pdf)