# LT6654AHS6-2.5#TRPBF

**Analog Devices** · Voltage References · TSOT-23-6

LT6654AHS6-2.5#TRPBF from Analog Devices, in a TSOT-23-6. 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 | Internal-function ground pin that must be tied to GND near Pin 2. |
| 2 | GND | power_in | Primary device ground for the LT6654. |
| 3 | DNC | unconnected | Do not connect; keep leakage current from this pin to VIN or GND to a minimum. |
| 4 | VIN | power_in | Power supply input; bypass with a 0.1µF capacitor to ground, operating with (VOUT + 0.5V) < VIN < 36V. |
| 5 | DNC | unconnected | Do not connect; keep leakage current from this pin to VIN or GND to a minimum. |
| 6 | VOUT | power_out | Voltage reference output; an output capacitor of 1µF minimum is required for stable operation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | TSOT-23-6 |
| Category | Power Management ICs |
| Pins | 6 |

## 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 (LT6654AH, 2.5V) |  | -0.215 |  | 0.215 | % | l: full operating temperature range | 6 |
| Output Voltage Temperature Coefficient (LT6654A) |  |  | 3 | 10 | ppm/°C | LT6654A grade; l: full operating temperature range; Note 3 | 6 |
| Line Regulation (LT6654-2.5) |  |  | 1.2 | 5 | ppm/V | VOUT + 0.5V ≤ VIN ≤ 36V; l | 6 |
| Load Regulation IOUT(SOURCE) |  |  | 3 | 8 | ppm/mA | IOUT(SOURCE) = 10mA; LT6654-2.048, -2.5, -3, -3.3, -4.096, -5 group; l; Note 4 | 6 |
| Load Regulation IOUT(SINK) |  |  | 9 | 20 | ppm/mA | IOUT(SINK) = 10mA; LT6654-2.048, -2.5, -3, -3.3, -4.096, -5 group; l; Note 4 | 6 |
| Dropout Voltage (VIN, VOUT) |  |  | 55 | 100 | mV | ΔVOUT = 0.1%, IOUT = 0mA; LT6654-2.048 to -5 group; l | 6 |
| Dropout Voltage (VIN, VOUT) |  |  |  | 120 | mV | ΔVOUT = 0.1%, IOUT(SOURCE) = 10mA; LT6654-2.048 to -5 group; l | 6 |
| Dropout Voltage (VIN, VOUT) |  |  |  | 450 | mV | ΔVOUT = 0.1%, IOUT(SINK) = -10mA; LT6654-2.048 to -5 group; l | 6 |
| Supply Current |  |  | 350 | 600 | µA | No load; l | 6 |
| Output Short-Circuit Current (short VOUT to GND) |  |  | 40 |  | mA | Short VOUT to GND | 6 |
| Output Short-Circuit Current (short VOUT to VIN) |  |  | 30 |  | mA | Short VOUT to VIN | 6 |
| Output Voltage Noise (LT6654-2.5) |  |  | 1.5 |  | ppmP-P | 0.1Hz ≤ f ≤ 10Hz; Note 6 | 6 |
| Turn-On Time |  |  | 150 |  | µs | 0.1% settling, CLOAD = 1µF | 7 |
| Long-Term Drift of Output Voltage (S6) |  |  | 60 |  | ppm/√kHr | LT6654S6; Note 7 | 7 |
| Hysteresis (S6) |  |  | 15 |  | ppm | ΔT = 0°C to 70°C; Note 8 | 7 |
| Hysteresis (S6) |  |  | 30 |  | ppm | ΔT = -40°C to 85°C; Note 8 | 7 |
| Hysteresis (S6) |  |  | 40 |  | ppm | ΔT = -40°C to 125°C; Note 8 | 7 |
| Hysteresis (S6) |  |  | 50 |  | ppm | ΔT = -55°C to 125°C; Note 8 | 7 |
| Input Voltage VIN to GND | VIN | -0.3 |  | 38 | V |  | 2 |
| Output Voltage | VOUT | -0.3 |  |  | V | Maximum printed as VIN + 0.3V | 2 |
| Storage Temperature Range |  | -65 |  | 150 | °C | Note 2 | 2 |
| Operating Temperature Range (absolute) |  | -55 |  | 125 | °C |  | 2 |
| Specified Temperature Range (H-Grade) |  | -40 |  | 125 | °C | H-grade part (LT6654AHS6-2.5) | 2 |
| Input Voltage VIN | VIN |  |  | 36 | V | (VOUT + 0.5V) < VIN < 36V | 1 |
| Output Current (sink and source) | IOUT | -10 |  | 10 | mA | Sinks and sources ±10mA | 1 |
| Output Capacitor | CL | 1 |  |  | µF | Required for stable operation | 12 |
| Thermal Resistance Junction-to-Ambient (6-lead TSOT-23) | θJA |  | 192 |  | °C/W | S6 package | 2 |
| Maximum Junction Temperature | TJMAX |  |  | 150 | °C | S6 package | 2 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | abs |  | Plastic mould compounds absorb water. With changes in | 18 |

## CAD (KiCad official)

- Symbol: `LT6654AHS6-2.5#TRPBF`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-6`
- 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `lt6654ahs6-2-5-trpbf-etched.step` / `lt6654ahs6-2-5-trpbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt6654ahs6-2-5-trpbf.step` / `lt6654ahs6-2-5-trpbf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Analog Devices datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/lt6654.pdf) (24 pp, sha256 `7793895f1475d122`, retrieved 2026-10-30, tier: manufacturer)
- **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/lt6654ahs6-2-5-trpbf-datasheet.pdf)