# BAJ2CC0T

**ROHM Semicon** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220-3

BAJ2CC0T from ROHM Semicon, in a TO-220-3. 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 | Vcc | power_in | Power supply voltage input; recommended operating range 4.0V to 25.0V for BAxxCC0xx, with a capacitor greater than 0.33µF to GND. |
| 2 | GND | power_in | Ground terminal (N.C./GND pin is GND on TO220FP-3); keep set ground and IC ground at the same potential. |
| 3 | OUT | power_out | Fixed 12.0V voltage output for BAJ2CC0T, up to 1A, requiring an anti-oscillation capacitor between OUT and GND. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | TO-220-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Power Supply Voltage (recommended) | VCC | 4 |  | 25 | V | BAxxCC0xx | 5 |
| Output Current (recommended) | Io |  |  | 1 | A | BAxxCC0xx | 5 |
| Peak Output Current | Io | 1 |  |  | A | Ta=25℃ | 6 |
| Ripple Rejection | R.R. | 45 | 55 |  | dB | f=120Hz, ein=1Vrms, Io=100mA | 6 |
| Bias Current | Ib |  | 2.5 | 5 | mA | VCTL=2V, Io=0mA | 6 |
| Dropout Voltage | ΔVd |  | 0.3 | 0.5 | V | Vcc=Vo×0.95 | 6 |
| Line Regulation | Reg.I |  | 20 | 100 | mV | Vcc=Vo(T)+1→25V | 6 |
| Load Regulation | Reg.L |  | 50 | 150 | mV | Io=5mA→1A | 6 |
| Input Power Supply Voltage (absolute max) | VCC | -0.3 |  | 35 | V | Must not exceed Pd | 5 |
| Voltage Applied to the Tip | VCC peak |  |  | 50 | V | 200msec or less (tr≥1msec) | 5 |
| Power Dissipation | Pd |  |  | 2000 | mW | TO220FP-3,5, no heat sink, Ta=25℃; derate 16 mW/℃ above 25℃ | 5 |
| Operating Temperature Range | Topr | -40 |  | 125 | ℃ |  | 5 |
| Ambient Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 5 |
| Junction Temperature | TjMAX. |  |  | 150 | ℃ |  | 5 |
| Output Voltage | Vo |  | 12 |  | V | Ta=25℃, Io=500mA, Vcc=17V; limits printed as Vo(T)×0.98 to Vo(T)×1.02 | 6 |
| Temperature Coefficient of Output Voltage | Tcvo |  | 0.02 |  | %/℃ | Io=5mA, Tj=0 to 125℃; printed ±0.02; not 100% tested | 6 |
| Output Short Current | Ios |  | 0.4 |  | A | Vcc=25V | 6 |
| Thermal resistance, junction to case | θj-c |  | 6.25 |  | ℃/W | When using a maximum heat sink (TO220FP) | 13 |
| Thermal resistance, junction to ambient | θja |  | 62.5 |  | ℃/W | IC alone (TO220FP) | 13 |

## CAD (KiCad official)

- Symbol: `BAJ2CC0T`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220-3 (KiCad packages3D, STEP)
- 3D model files: `baj2cc0t-etched.step` / `baj2cc0t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `baj2cc0t.step` / `baj2cc0t.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [ROHM Semicon datasheet](docs/baj2cc0t-datasheet.pdf) (23 pp, sha256 `a7cdaf4806983a19`, retrieved 2026-10-31, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/baj2cc0t-datasheet.pdf)