# SD8054

**SHOUDING** · Battery Management ICs · SOT-23-5

SD8054 from SHOUDING, in a SOT-23-5. 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 | CHRG | output | Open-drain charge status output that is pulled low by an internal N-channel MOSFET while charging and goes high impedance when the charge cycle completes or reverse battery lockout is detected. |
| 2 | GND | power_in | Ground reference pin for the charger. |
| 3 | BAT | output | Charge current output to the battery that regulates the final float voltage to 4.2V and should be bypassed with at least a 1uF capacitor. |
| 4 | VCC | power_in | Positive input supply that powers the charger, can range from 4.30V to 6.5V, and should be bypassed with at least a 1uF capacitor. |
| 5 | PROG | bidirectional | Charge current program, monitor and shutdown pin: a 1% resistor to ground sets the charge current, the pin servos to 1V in constant-current mode, and a 1.21V shutdown threshold stops charging. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SHOUDING |
| Package | SOT-23-5 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Supply Voltage | VCC | 4.5 | 5 | 6.5 | V |  | 4 |
| Regulated Output (Float) Voltage | VFLOAT | 4.15 | 4.2 | 4.24 | V | 0℃≤TA≤85℃, IBAT = 50mA | 4 |
| BAT Pin Current, Current Mode | IBAT | 83 | 89 | 97 | mA | RPROG = 10k, Current Mode | 4 |
| BAT Pin Current, Current Mode | IBAT | 410 | 445 | 470 | mA | RPROG = 2k, Current Mode | 4 |
| Trickle Charge Current | ITRIKL | 15 | 39 | 65 | mA | VBAT < VTRIKL, RPROG = 2k | 4 |
| PROG Pin Voltage | VPROG | 0.94 | 1.02 | 1.08 | V | RPROG = 10k, Current Mode | 4 |
| Efficiency Power FET ON Resistance (Between VCC and BAT) | RON |  | 660 |  | m | Between VCC and BAT | 4 |
| Input Supply Voltage (absolute maximum) | VCC | -0.3 |  | 7 | V |  | 3 |
| PROG Pin Voltage (absolute maximum) | PROG | -0.3 |  |  | V | Maximum is VCC + 0.3V | 3 |
| BAT Pin Voltage (absolute maximum) | BAT | -0.3 |  | 7 | V |  | 3 |
| CHRG Pin Voltage (absolute maximum) | CHRG | -0.3 |  | 7 | V |  | 3 |
| BAT Pin Current |  |  |  | 800 | mA |  | 3 |
| Maximum Junction Temperature |  |  |  | 125 | ℃ |  | 3 |
| Operating Ambient Temperature Range | TA | -40 |  | 85 | ℃ |  | 3 |
| Storage Temperature Range |  | -65 |  | 125 | ℃ |  | 3 |
| Lead Temperature (Soldering) |  |  |  | 300 | ℃ | 10 sec | 3 |

## CAD (KiCad official)

- Symbol: `SD8054`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `sd8054-etched.step` / `sd8054-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sd8054.step` / `sd8054.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SHOUDING datasheet](docs/sd8054-datasheet.pdf) (6 pp, sha256 `716e4c462271ec57`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed (audit)), 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/sd8054-datasheet.pdf)