# EA9203

**Everanalog IC design** · DC-DC Converters · SOT-23-6

EA9203 from Everanalog IC design, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | BST | output | High side gate drive boost pin that requires a 0.1μF-1μF capacitor connection to LX to fully turn on the internal high-side NMOS. |
| 2 | GND | power_in | Ground pin. |
| 3 | FB | input | Voltage feedback input pin for feedback voltage regulation at 0.8V±1% via resistive divider from VOUT. |
| 4 | SHDN | input | Enable input pin (pull high to enable, pull low to disable) with 100kΩ resistor connection to VIN for auto start-up. |
| 5 | VIN | power_in | Power supply input pin for 4.5V to 24V operation; input capacitors should be placed as close as possible to minimize noise. |
| 6 | LX | output | Power switching node that connects to external inductor for energy storage and output ripple filtering. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Everanalog IC design |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Feedback Voltage | VFB | 0.788 | 0.8 | 0.812 | V | 4.5V≦VIN≦23V | 5 |
| VIN Shutdown Supply Current | ISD |  | 1 | 10 | μA | EN=0V | 5 |
| Feedback Input Current | IFB |  | 0.01 | 0.1 | μA | VFB=1V | 5 |
| H Input Low Voltage | H (L |  |  | 0.4 | V |  | 5 |
| H Input High Voltage | H (H | 1.5 |  |  | V |  | 5 |
| H Input Current | H |  |  | 2 | uA | H=2V | 5 |
| Supply Voltage VIN (absolute maximum) | VIN | -0.3 |  | 25 | V |  | 4 |
| Enable Voltage H (absolute maximum) |  | -0.3 |  | 25 | V |  | 4 |
| LX Voltage (absolute maximum) | VLX | -0.3 |  |  | V |  | 4 |
| BST Pin Voltage (absolute maximum) | VBST | -0.3 |  |  | V |  | 4 |
| All Other Pins Voltage (absolute maximum) |  | -0.3 |  | 6 | V |  | 4 |
| Maximum Junction Temperature | TJ |  |  | 150 | °C |  | 4 |
| Storage Temperature | TS | -65 |  | 150 | °C |  | 4 |
| Lead Temperature (Soldering, 10 sec.) |  |  |  | 260 | °C | 10 sec soldering | 4 |
| Supply Voltage VIN (recommended) | VIN | 4.5 |  | 24 | V |  | 4 |
| Operation Temperature Range |  | -40 |  | 85 | °C |  | 4 |
| VIN Quiescent Current | IDDQ |  | 0.45 |  | mA | EN=2V, VFB=1V | 5 |
| High-Side MOSFET RDS(ON) | RDS(ON) |  | 280 |  | mΩ |  | 5 |
| Low-Side MOSFET RDS(ON) | RDS(ON) |  | 160 |  | mΩ |  | 5 |
| Valley Current Limit | ILIMIT |  | 1.6 |  | A | Note 3 (not production tested) | 5 |
| On Time | TON |  | 105 |  | ns | VIN=12V, VOUT=1.05V | 5 |
| Minimum On Time | TON(MIN) |  | 60 |  | ns |  | 5 |
| Minimum Off Time | TOFF(MIN) |  | 105 |  | ns | VFB=0.6V | 5 |
| Input Supply Voltage UVLO Threshold | VUVLO(Vth) |  | 4.3 |  | V | VIN Rising | 5 |
| UVLO Threshold Hysteresis | VUVLO(HYS) |  | 0.35 |  | V |  | 5 |
| Internal Soft-Start Period | TSS |  | 1.5 |  | ms | Note 3 (not production tested) | 5 |
| Thermal Shutdown Threshold | TSD |  | 160 |  | °C | Note 3 (not production tested) | 5 |
| Thermal Shutdown Hysteresis | THYS |  | 30 |  | °C | Note 3 (not production tested) | 5 |
| Package Thermal Resistance, junction-to-ambient | θJA |  | 250 |  | °C/W | Note 2: measured at 25°C ambient on JEDEC-51-7 4-layer board | 4 |
| Package Thermal Resistance, junction-to-case | θJC |  | 110 |  | °C/W |  | 4 |

## CAD (KiCad official)

- Symbol: `EA9203`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `ea9203-etched.step` / `ea9203-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ea9203.step` / `ea9203.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Everanalog IC design datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590896225699258368) (9 pp, sha256 `292e17bf77610936`, retrieved 2026-09-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/ea9203-datasheet.pdf)