component
TCR3UM18A
Public Made by Adomby adom
TOSHIBA Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DFN-4(1x1). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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TCR3UM18A
TOSHIBA · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-4(1x1)
TCR3UM18A from TOSHIBA, in a DFN-4(1x1). 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 | VOUT | power_out | Regulated output voltage pin (1.8 V for TCR3UM18A), requiring an output capacitor of at least 1.0 µF and delivering up to 300 mA DC. |
| 2 | GND | power_in | Ground pin; the center electrode should be connected to GND or left open. |
| 3 | CONTROL | input | On/off control input, HIGH (1.0 to 5.5 V) turns the output on, LOW (0 to 0.4 V) or open turns it off, with an internal pull-down to GND. |
| 4 | VIN | power_in | Input supply pin, operating range 1.5 to 5.5 V (absolute maximum 6.0 V), requiring an input capacitor of at least 1.0 µF. |
| 5 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | DFN-4(1x1) |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage accuracy (1.8V ≤ VOUT) | VOUT | -1 | 1 | % | IOUT = 50 mA (Note 4), 1.8V ≤ VOUT, Tj = 25°C | 5 | |
| Input voltage | VIN | 1.5 | 5.5 | V | IOUT = 1 mA | 5 | |
| Line regulation | Reg·line | 1 | 15 | mV | IOUT = 1 mA (Note 5), Tj = 25°C | 5 | |
| Load regulation | Reg·load | 17 | 30 | mV | 1 mA ≤ IOUT ≤ 300 mA (Note 6), Tj = 25°C | 5 | |
| Quiescent current (1.75V ≤ VOUT ≤ 5V) | IB(ON2) | 0.38 | 0.68 | μA | IOUT = 0 mA, 1.75 V ≤ VOUT ≤ 5 V (Note 7); max at Tj = -40 to 85°C | 5 | |
| Stand-by current (VIN = 2.5 V) | IB(OFF1) | 0.03 | 0.16 | μA | VCT = 0 V, VIN = 2.5 V; max at Tj = -40 to 85°C | 5 | |
| Stand-by current (VIN = 5.5 V) | IB(OFF2) | 0.03 | 0.2 | μA | VCT = 0 V, VIN = 5.5 V; max at Tj = -40 to 85°C | 5 | |
| Drop-out voltage (VOUT = 1.8 V) | VDO | 336 | 457 | mV | IOUT = 300 mA, VOUT = 1.8 V; max at Tj = -40 to 85°C | 5 | |
| Output current limit | ICL | 400 | 545 | mA | VOUT = VOUT(NOM)*90% (Note 9); min at Tj = -40 to 85°C | 5 | |
| Control voltage (ON) | VCT(ON) | 1 | 5.5 | V | 5 | ||
| Control voltage (OFF) | VCT(OFF) | 0 | 0.4 | V | 5 | ||
| Input voltage (absolute maximum) | VIN | -0.3 | 6 | V | Ta = 25°C | 2 | |
| Control voltage (absolute maximum) | VCT | -0.3 | 6 | V | Rating: -0.3 to VIN + 0.3 ≤ 6.0 | 2 | |
| Output voltage (absolute maximum) | VOUT | -0.3 | 6 | V | Rating: -0.3 to VIN + 0.3 ≤ 6.0 | 2 | |
| Power dissipation | PD | 420 | mW | Rating at mounting on board (Note 1), Ta = 25°C | 2 | ||
| Junction temperature | Tj | 150 | °C | 2 | |||
| Storage temperature range | Tstg | -55 | 150 | °C | 2 | ||
| Input voltage (operating) | VIN | 1.5 | 5.5 | V | IOUT = 1 mA (Note 2) | 2 | |
| Control voltage (operating) | VCT | 0 | V | Maximum is VIN | 2 | ||
| Output voltage (operating range) | VOUT | 0.8 | 5 | V | Device-family range; this part is 1.8 V output | 2 | |
| Output current (DC) | IOUT | 300 | mA | DC (Note 3) | 2 | ||
| Operating temperature | Topr | -40 | 85 | °C | 2 | ||
| Output capacitance | COUT | 1 | μF | 2 | |||
| Input capacitance | CIN | 1 | μF | 2 |
CAD (KiCad official)
- Symbol:
TCR3UM18A - Footprint:
Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm - 3D model: DFN-4(1x1) (KiCad packages3D, STEP)
- 3D model files:
tcr3um18a-etched.step/tcr3um18a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tcr3um18a.step/tcr3um18a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TOSHIBA datasheet (17 pp, sha256
ceb45d496f8957c0, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).
# TCR3UM18A
**TOSHIBA** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-4(1x1)
TCR3UM18A from TOSHIBA, in a DFN-4(1x1). 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 | VOUT | power_out | Regulated output voltage pin (1.8 V for TCR3UM18A), requiring an output capacitor of at least 1.0 µF and delivering up to 300 mA DC. |
| 2 | GND | power_in | Ground pin; the center electrode should be connected to GND or left open. |
| 3 | CONTROL | input | On/off control input, HIGH (1.0 to 5.5 V) turns the output on, LOW (0 to 0.4 V) or open turns it off, with an internal pull-down to GND. |
| 4 | VIN | power_in | Input supply pin, operating range 1.5 to 5.5 V (absolute maximum 6.0 V), requiring an input capacitor of at least 1.0 µF. |
| 5 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | DFN-4(1x1) |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage accuracy (1.8V ≤ VOUT) | VOUT | -1 | | 1 | % | IOUT = 50 mA (Note 4), 1.8V ≤ VOUT, Tj = 25°C | 5 |
| Input voltage | VIN | 1.5 | | 5.5 | V | IOUT = 1 mA | 5 |
| Line regulation | Reg·line | | 1 | 15 | mV | IOUT = 1 mA (Note 5), Tj = 25°C | 5 |
| Load regulation | Reg·load | | 17 | 30 | mV | 1 mA ≤ IOUT ≤ 300 mA (Note 6), Tj = 25°C | 5 |
| Quiescent current (1.75V ≤ VOUT ≤ 5V) | IB(ON2) | | 0.38 | 0.68 | μA | IOUT = 0 mA, 1.75 V ≤ VOUT ≤ 5 V (Note 7); max at Tj = -40 to 85°C | 5 |
| Stand-by current (VIN = 2.5 V) | IB(OFF1) | | 0.03 | 0.16 | μA | VCT = 0 V, VIN = 2.5 V; max at Tj = -40 to 85°C | 5 |
| Stand-by current (VIN = 5.5 V) | IB(OFF2) | | 0.03 | 0.2 | μA | VCT = 0 V, VIN = 5.5 V; max at Tj = -40 to 85°C | 5 |
| Drop-out voltage (VOUT = 1.8 V) | VDO | | 336 | 457 | mV | IOUT = 300 mA, VOUT = 1.8 V; max at Tj = -40 to 85°C | 5 |
| Output current limit | ICL | 400 | 545 | | mA | VOUT = VOUT(NOM)*90% (Note 9); min at Tj = -40 to 85°C | 5 |
| Control voltage (ON) | VCT(ON) | 1 | | 5.5 | V | | 5 |
| Control voltage (OFF) | VCT(OFF) | 0 | | 0.4 | V | | 5 |
| Input voltage (absolute maximum) | VIN | -0.3 | | 6 | V | Ta = 25°C | 2 |
| Control voltage (absolute maximum) | VCT | -0.3 | | 6 | V | Rating: -0.3 to VIN + 0.3 ≤ 6.0 | 2 |
| Output voltage (absolute maximum) | VOUT | -0.3 | | 6 | V | Rating: -0.3 to VIN + 0.3 ≤ 6.0 | 2 |
| Power dissipation | PD | | | 420 | mW | Rating at mounting on board (Note 1), Ta = 25°C | 2 |
| Junction temperature | Tj | | | 150 | °C | | 2 |
| Storage temperature range | Tstg | -55 | | 150 | °C | | 2 |
| Input voltage (operating) | VIN | 1.5 | | 5.5 | V | IOUT = 1 mA (Note 2) | 2 |
| Control voltage (operating) | VCT | 0 | | | V | Maximum is VIN | 2 |
| Output voltage (operating range) | VOUT | 0.8 | | 5 | V | Device-family range; this part is 1.8 V output | 2 |
| Output current (DC) | IOUT | | | 300 | mA | DC (Note 3) | 2 |
| Operating temperature | Topr | -40 | | 85 | °C | | 2 |
| Output capacitance | COUT | 1 | | | μF | | 2 |
| Input capacitance | CIN | 1 | | | μF | | 2 |
## CAD (KiCad official)
- Symbol: `TCR3UM18A`
- Footprint: `Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm`
- 3D model: DFN-4(1x1) (KiCad packages3D, STEP)
- 3D model files: `tcr3um18a-etched.step` / `tcr3um18a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tcr3um18a.step` / `tcr3um18a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [TOSHIBA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8556947320303607808) (17 pp, sha256 `ceb45d496f8957c0`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/tcr3um18a-datasheet.pdf)