component
SE9029X
Public Made by Adomby adom
Seaward Elec Battery Management, SOP-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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|---|---|
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| page.json | 6d ago |
| README.md | 6d ago |
| se9029x-etched.glb | 6d ago |
| se9029x-etched.step | 6d ago |
| se9029x-hero.glb | 6d ago |
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SE9029X
Seaward Elec · Battery Management · SOP-8-EP
SE9029X from Seaward Elec, in a SOP-8-EP. 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 | Ground pin (地) for the charger. |
| 2 | VIN | power_in | Power input pin; the recommended input range is 4.7 V to 5.5 V, the absolute maximum is -0.3 V to 6.5 V, and a C1 of at least 10 µF must be placed as close to VIN as possible. |
| 3 | CHRG | output | Charge-status indicator: pulled low during trickle and constant-current charging and high impedance when charging is complete or in fault/sleep; Vchrg is at most 0.6 V at 5 mA. |
| 4 | STDBY | output | Charge-status indicator: high during trickle and constant-current charging, pulled low when charging is complete, and high impedance during temperature fault or sleep; Vstdby is at most 0.6 V at 5 mA. |
| 5 | NC | unconnected | No connection (NC, empty pin) on the SE9029X; on the SE9029XD this pin is the EN enable input. |
| 6 | BAT | input | Battery voltage feedback input and battery positive terminal; the float voltage is 4.2 V or 4.35 V (typical), and C3 should be placed close to this pin. |
| 7 | SEN | input | Charge-current setting pin; the charge current is IBAT = 100 mV / R5, where R5 is the sense resistor connected between SEN and BAT. |
| 8 | SW | output | Switching output node of the buck converter (1 MHz typical switching frequency). |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Seaward Elec |
| Package | SOP-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |
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 (recommended) | VCC | 4.7 | 5.5 | V | 5 | ||
| Junction operating temperature (recommended) | TJ | -20 | 125 | °C | 5 | ||
| Input supply voltage | VIN | -0.3 | 6.5 | V | 5 | ||
| Input/output pin voltage | I/O | -0.3 | 6.5 | V | 5 | ||
| VIN/GND/SW input-output current | IVIN/GND/SW | 3 | A | 5 | |||
| Junction temperature | TJ | -40 | 150 | °C | 5 | ||
| Storage temperature | TST | -55 | 150 | °C | 5 | ||
| Soldering temperature | 260 | °C | <10 s | 5 | |||
| Input voltage | VIN | 4.7 | 5 | 5.5 | V | 5 | |
| Battery float voltage | VFLOAT | 4.158 | 4.2 | 4.242 | V | IOUT=0.1A（Rsen=0.2Ω） | 5 |
| Maximum duty cycle | DC | 100 | % | 6 | |||
| CHRG pin output low voltage | Vchrg | 0.2 | 0.6 | V | Ichrg=5mA | 6 | |
| STDBY pin output low voltage | Vstdby | 0.2 | 0.6 | V | Istdby=5mA | 6 | |
| Undervoltage lockout threshold | UVLO | 3.75 | V | From VCC Low to High | 5 | ||
| Undervoltage lockout hysteresis | VUVHYS | 160 | mV | 5 | |||
| Quiescent current, charging mode | IIN | 450 | μA | 充电模式 | 5 | ||
| Quiescent current, standby (charge terminated) | IIN | 170 | μA | 待机模式 (充电中止) | 5 | ||
| Quiescent current, sleep mode | IIN | 110 | μA | 休眠模式（Vin<VBAT,或 Vin<Vuvlo） | 5 | ||
| BAT current, charging | IBAT | 1000 | mA | 充电状态（Rsen=0.1Ω） | 5 | ||
| BAT current, standby (charge terminated) | IBAT | 2 | uA | 待机模式(充电中止) | 5 | ||
| BAT current, sleep mode | IBAT | 2 | uA | 休眠模式（Vin<VBAT,或 Vin<Vuvlo） | 5 | ||
| Constant-current sense voltage | VSEN(CHR) | 100 | mV | 3V≤VBAT≤4V | 5 | ||
| Trickle-charge sense voltage | VSEN(TRKL) | 10 | mV | VBAT=2.5V | 5 | ||
| Trickle-charge threshold voltage | VTRKL | 2.9 | V | VBAT rising | 5 | ||
| Automatic shutdown threshold | VASD | 100 | mV | VIN-VBAT | 5 | ||
| P MOSFET on-resistance | RPMOS | 140 | mΩ | 5 | |||
| N MOSFET on-resistance | RNMOS | 100 | mΩ | 6 | |||
| Recharge threshold | ΔVRECHRG | 200 | mV | VFLOAT -VRECHRG, VBAT falling | 6 | ||
| Switching frequency | FOSC | 1 | MHz | 6 | |||
| Thermal shutdown threshold | OTP | 140 | °C | 6 | |||
| Soft-start time | Tss | 200 | uS | 6 | |||
| Termination comparator filter time | Tterm | 1 | mS | 6 | |||
| MPPT threshold voltage | Vmppt | 4.65 | V | 6 |
CAD (KiCad official)
- Symbol:
SE9029X - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: SOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
se9029x-etched.step/se9029x-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);se9029x.step/se9029x.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Seaward Elec datasheet (12 pp, sha256
c55b1540a349a9d7, retrieved 2026-10-18, 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-haiku-5-5(text), consensusclaude-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).