# EA8105AT5R

**Everanalog IC design** · DC-DC Converters · SOT23-5

EA8105AT5R from Everanalog IC design, in a SOT23-5. 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 | EN | input | Enable control pin: pull high to turn the IC on and pull low to disable it, with VEN(H) minimum 1.5V and VEN(L) maximum 0.4V, and it must not be left floating. |
| 2 | GND | power_in | Ground pin. |
| 3 | LX | output | Power switching node that connects to the inductor and the drains of the internal high-side PMOS and low-side NMOS. |
| 4 | VIN | power_in | Power supply input pin, with a supply range of 2.5V to 6.5V; input capacitors should be placed as close as possible from VIN to GND. |
| 5 | FB | input | Voltage feedback input connected to VOUT through a resistive divider; the IC regulates FB at 0.6V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Everanalog IC design |
| Package | SOT23-5 |
| 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 |
|---|---|---|---|---|---|---|---|
| VIN to GND |  | -0.3 |  | 7 | V |  | 4 |
| LX to GND |  | -0.3 |  |  | V | upper limit printed as VIN+0.3V | 4 |
| EN, FB, PG to GND |  | -0.3 |  |  | V | upper limit printed as VIN | 4 |
| Maximum Junction Temperature | TJ |  |  | 150 | °C |  | 4 |
| Lead Temperature (Soldering, 10sec.) |  |  |  | 260 | °C | 10 sec soldering | 4 |
| Storage Temperature | TS | -65 |  | 150 | °C |  | 4 |
| Supply Voltage | VIN | 2.5 |  | 6.5 | V |  | 4 |
| Junction Temperature Range |  | -40 |  | 125 | °C |  | 4 |
| Operation Temperature Range | TOPR | -40 |  | 85 | °C |  | 4 |
| Input Supply Voltage | VIN | 2.5 |  | 6.5 | V |  | 5 |
| Shutdown Current | ISHDN |  | 0.1 | 1 | μA | EN=GND | 5 |
| Reference Voltage | VREF | 0.588 | 0.6 | 0.612 | V |  | 5 |
| FB Input Leakage Current | IFB |  | 0.01 | 1 | µA | VFB=VIN | 5 |
| Oscillation Frequency | FOSC | 0.8 | 1 | 1.2 | MHz | IOUT=300mA | 5 |
| P-Channel Current Limit | ILIM | 2.2 |  | 2.75 | A |  | 5 |
| Maximum Duty Cycle |  |  |  | 100 | % |  | 5 |
| Minimum On Time |  | 50 |  |  | ns |  | 5 |
| Input Over Voltage Protection | VIN OVP |  | 6.3 |  | V |  | 5 |
| Quiescent Current | Iq |  | 200 |  | μA | VFB=0.65V, IOUT=0A | 5 |
| P-Channel MOSFET On-Resistance | RDS(ON) |  | 130 |  | mΩ |  | 5 |
| N-Channel MOSFET On-Resistance | RDS(ON) |  | 80 |  | mΩ |  | 5 |
| EN High-Level Input Voltage | VEN(H) |  | 1.5 |  | V |  | 5 |
| EN Low-Level Input Voltage | VEN(L) |  | 0.4 |  | V |  | 5 |
| Under Voltage Lockout Voltage | UVLO |  | 2.4 |  | V |  | 5 |
| UVLO Hysteresis | VHYS |  | 0.2 |  | V |  | 5 |
| Internal Soft-Start Time | TSS |  | 1 |  | ms |  | 5 |
| VOUT Discharge Resistance |  |  | 95 |  | Ω |  | 5 |
| Thermal Shutdown Temperature | TSD |  | 150 |  | °C |  | 5 |
| Thermal Resistance Junction-to-Ambient, SOT-23-5 | θJA |  | 250 |  | °C/W | Note 2: 25°C ambient, JEDEC-51-7 test board | 4 |
| Thermal Resistance Junction-to-Case, SOT-23-5 | θJC |  | 130 |  | °C/W |  | 4 |

## CAD (KiCad official)

- Symbol: `EA8105AT5R`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT23-5 (KiCad packages3D, STEP)
- 3D model files: `ea8105at5r-etched.step` / `ea8105at5r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ea8105at5r.step` / `ea8105at5r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Everanalog IC design datasheet](docs/ea8105at5r-datasheet.pdf) (10 pp, sha256 `376b856922403942`, retrieved 2026-11-04, 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/ea8105at5r-datasheet.pdf)