# L7915-1.5A

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

L7915-1.5A from TDSEMIC, in a TO-220-3L. 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 | GND | power_in | Ground reference pin of the negative regulator, shown as pin 1 in the TO-220-3L pin list. |
| 2 | IN | power_in | Negative unregulated input; the absolute maximum input voltage Vi is -35 V, and electrical characteristics are specified for Vi between -7 V and -25 V. |
| 3 | OUT | power_out | Regulated -5 V output, rated for a maximum output current IOM of 1.2 A and a peak current Ipk of 2.0 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TDSEMIC |
| Package | TO-220-3L |
| 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 (25℃) | Vo | -4.8 | -5 | -5.2 | V |  | 1 |
| Output Voltage (0-125℃) | Vo | -4.75 | -5 | -5.25 | V | -7V≤Vi≤-20V, Io=5mA-1A, P≤15W | 1 |
| Load Regulation | ∆Vo |  | 15 | 100 | mV | Io=5mA-1.2A, 25℃ | 1 |
| Load Regulation | ∆Vo |  | 5 | 50 | mV | Io=250mA-750mA, 25℃ | 1 |
| Line Regulation | ∆Vo |  | 12.5 | 50 | mV | -7V≤Vi≤-25V, 25℃ | 1 |
| Line Regulation | ∆Vo |  | 4 | 15 | mV | -8V≤Vi≤-12V, 25℃ | 1 |
| Quiescent Current | Iq |  | 1.5 | 2 | mA | 25℃ | 1 |
| Quiescent Current Change | ∆Iq |  |  | 0.5 | mA | -7V≤Vi≤-25V, 0-125℃ | 1 |
| Input Voltage | Vi |  |  | -35 | V |  | 1 |
| Operating Junction Temperature Range | TOPR | 0 |  | 150 | ℃ |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  | 83.3 |  | ℃/W |  | 1 |
| Thermal Resistance Junction to Case | RθJC |  | 8.33 |  | ℃/W |  | 1 |
| Output Noise Voltage | VN |  | 125 |  | μV | 10Hz≤f≤100KHz, 25℃ | 1 |
| Output Voltage Drift | ΔVo / ΔT |  | -0.4 |  | mV/℃ | IO=5mA, 0-125℃ | 1 |
| Ripple Rejection | RR | 54 | 60 |  | dB | -8V≤Vi≤-18V, f=120Hz, 0-125℃ | 1 |
| Dropout Voltage | Vd |  | 1.1 |  | V | Io=1A, 25℃ | 1 |
| Peak Current | Ipk |  | 2 |  | A | 25℃ | 1 |

## CAD (KiCad official)

- Symbol: `L7915-1.5A`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220-3L (KiCad packages3D, STEP)
- 3D model files: `l7915-1-5a-etched.step` / `l7915-1-5a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l7915-1-5a.step` / `l7915-1-5a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TDSEMIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603383146570399744) (1 pp, sha256 `38d3b36038d37b27`, 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/l7915-1-5a-datasheet.pdf)