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SE9450P-42-HF
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Seaward Elec Battery Management, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SE9450P-42-HF
Seaward Elec · Battery Management · ESOP-8
SE9450P-42-HF from Seaward Elec, in a ESOP-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 | TEMP | input | Battery temperature sense input for an NTC sensor; charging pauses when TEMP is below 45% of Vcc or above 80% of Vcc, and tying TEMP to ground disables the function. |
| 2 | PROG | passive | Constant-charge-current programming and charge-current monitor pin; a resistor to GND sets the current (RPROG = 1000/IBAT in kΩ/A, e.g. 2k for 500mA, 1k for 1A). |
| 3 | GND | power_in | Power ground. |
| 4 | VCC | power_in | Positive input supply; recommended 4.5V to 25V, absolute maximum 28V, with 6.5V over-voltage protection. |
| 5 | BAT | power_out | Battery connection pin; charge current output to the single-cell Li-ion battery with the 4.2V float voltage for the -42 variant. |
| 6 | STDBY | output | Open-drain charge-complete indicator that is pulled low internally when charging is complete and high-impedance otherwise (rated -0.3V to 28V). |
| 7 | CHRG | output | Open-drain charging indicator that is pulled low internally while charging and high-impedance otherwise (rated -0.3V to 28V). |
| 8 | CE | input | Chip enable input; high level enables normal operation and low level stops the chip. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Seaward Elec |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
SE9450P-42-HF - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
se9450p-42-hf-etched.step/se9450p-42-hf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);se9450p-42-hf.step/se9450p-42-hf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Seaward Elec datasheet (14 pp, sha256
8a53ce8ea33ee242, retrieved 2026-10-10, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).
# SE9450P-42-HF
**Seaward Elec** · Battery Management · ESOP-8
SE9450P-42-HF from Seaward Elec, in a ESOP-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 | TEMP | input | Battery temperature sense input for an NTC sensor; charging pauses when TEMP is below 45% of Vcc or above 80% of Vcc, and tying TEMP to ground disables the function. |
| 2 | PROG | passive | Constant-charge-current programming and charge-current monitor pin; a resistor to GND sets the current (RPROG = 1000/IBAT in kΩ/A, e.g. 2k for 500mA, 1k for 1A). |
| 3 | GND | power_in | Power ground. |
| 4 | VCC | power_in | Positive input supply; recommended 4.5V to 25V, absolute maximum 28V, with 6.5V over-voltage protection. |
| 5 | BAT | power_out | Battery connection pin; charge current output to the single-cell Li-ion battery with the 4.2V float voltage for the -42 variant. |
| 6 | STDBY | output | Open-drain charge-complete indicator that is pulled low internally when charging is complete and high-impedance otherwise (rated -0.3V to 28V). |
| 7 | CHRG | output | Open-drain charging indicator that is pulled low internally while charging and high-impedance otherwise (rated -0.3V to 28V). |
| 8 | CE | input | Chip enable input; high level enables normal operation and low level stops the chip. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Seaward Elec |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
## CAD (KiCad official)
- Symbol: `SE9450P-42-HF`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `se9450p-42-hf-etched.step` / `se9450p-42-hf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `se9450p-42-hf.step` / `se9450p-42-hf.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Seaward Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8761317294901202944) (14 pp, sha256 `8a53ce8ea33ee242`, retrieved 2026-10-10, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/se9450p-42-hf-datasheet.pdf)