# LT1054IP

**Texas Instruments** · DC-DC Converters · PDIP-8

LT1054IP from Texas Instruments, in a PDIP-8. 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 | FB/SD | input | Shutdown input for low Iq operation, or error amplifier input for regulation. |
| 2 | CAP+ | input | Positive side of the external CIN capacitor. |
| 3 | GND | power_in | Ground reference pin. |
| 4 | CAP- | input | Negative side of the external CIN capacitor. |
| 5 | VOUT | output | Regulated output voltage. |
| 6 | VREF | power_in | Internal reference voltage output. |
| 7 | OSC | input | Oscillator control pin, used to adjust the switching frequency or to synchronize the device externally. |
| 8 | VCC | power_in | Supply pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | PDIP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC |  |  | 16 | V |  | 4 |
| Input voltage, FB/SD | VI | 0 |  |  | V | FB/SD pin; maximum printed as VCC | 4 |
| Input voltage, OSC | VI | 0 |  |  | V | OSC pin; maximum printed as Vref | 4 |
| Junction temperature, LT1054I | TJ |  |  | 135 | °C | LT1054I | 4 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 4 |
| Supply voltage | VCC | 3.5 |  | 15 | V |  | 4 |
| Operating free-air temperature range, LT1054I | TA | -40 |  | 85 | °C | LT1054I | 4 |
| Junction-to-ambient thermal resistance, P (PDIP) 8-pin | RθJA |  | 85 |  | °C/W |  | 4 |
| Regulated output voltage | VO | -4.7 | -5 | -5.2 | V | VCC = 7 V, TJ = 25°C, RL = 500 Ω | 5 |
| Input regulation |  |  | 5 | 25 | mV | VCC = 7 V to 12 V, RL = 500 Ω, Full range | 5 |
| Output regulation |  |  | 10 | 50 | mV | VCC = 7 V, RL = 100 Ω to 500 Ω, Full range | 5 |
| Voltage loss | VCC − /VO/ |  | 0.35 | 0.55 | V | IO = 10 mA, CI = CO = 100-μF tantalum, Full range | 5 |
| Voltage loss | VCC − /VO/ |  | 1.1 | 1.6 | V | IO = 100 mA, CI = CO = 100-μF tantalum, Full range | 5 |
| Output resistance |  |  | 10 | 15 | Ω | ΔIO = 10 mA to 100 mA, Full range | 5 |
| Oscillator frequency |  | 15 | 25 | 35 | kHz | VCC = 3.5 V to 15 V, Full range | 5 |
| Reference voltage | Vref | 2.35 | 2.5 | 2.65 | V | I(REF) = 60 μA, 25°C | 5 |
| Reference voltage | Vref | 2.25 |  | 2.75 | V | I(REF) = 60 μA, Full range | 5 |
| Supply current | ICC |  | 2.5 | 5 | mA | VCC = 3.5 V, IO = 0, Full range | 5 |
| Supply current | ICC |  | 3 | 200 | mA | VCC = 15 V, IO = 0, Full range | 5 |
| Supply current in shutdown |  |  | 100 |  | μA | V(FB/SD) = 0 V, Full range | 5 |

## CAD (KiCad official)

- Symbol: `LT1054IP`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files: `lt1054ip-etched.step` / `lt1054ip-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt1054ip.step` / `lt1054ip.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lt1054) (36 pp, sha256 `cb7fc2ff583618ff`, retrieved 2026-10-10, 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/lt1054ip-datasheet.pdf)