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SE9450D-435-HF

Public Made by Adom

by adom

Seaward Elec Battery Management, DFN-8-EP(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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se9450d-435-hf-etched.glb se9450d-435-hf: factory component page (tier=lcsc) · Ray 1mo ago
se9450d-435-hf-etched.step se9450d-435-hf: factory component page (tier=lcsc) · Ray 1mo ago
se9450d-435-hf-hero.glb se9450d-435-hf: hero GLB from the etched model (keeps the MPN mark) · Ray 1mo ago
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SE9450D-435-HF

Seaward Elec · Battery Management · DFN-8-EP(2x2)

SE9450D-435-HF from Seaward Elec, in a DFN-8-EP(2x2). 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 the battery NTC network; charging pauses when TEMP<45%Vcc or TEMP>80%Vcc, and tying TEMP to ground disables this function.
2 PROG passive Constant-charge-current setting and charge-current monitor pin, programmed by a resistor to GND (RPROG = 1000/IBAT in the datasheet's units).
3 GND power_in Power ground.
4 VCC power_in Positive input supply, 4.5 to 25V recommended (28V absolute max) with 6.5V input overvoltage protection.
5 BAT power_out Battery connection pin; float voltage is 4.35V (typ) for the -435 option.
6 STDBY output Open-drain charge-complete indicator, pulled low when charging is complete and high impedance otherwise.
7 CHRG output Open-drain charge indicator, pulled low while charging and high impedance otherwise.
8 CE input Chip enable input; high enables normal operation and low 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 DFN-8-EP(2x2)
Category Power Management (PMIC)
Pins 9

CAD (KiCad official)

  • Symbol: SE9450D-435-HF
  • Footprint: Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP0.6x1.2mm
  • 3D model: DFN-8-EP(2x2) (KiCad packages3D, STEP)
  • 3D model files: se9450d-435-hf-etched.step / se9450d-435-hf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); se9450d-435-hf.step / se9450d-435-hf.glb are the bare package body.

Provenance

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

  • Datasheet: Seaward Elec datasheet (14 pp, sha256 8a53ce8ea33ee242, retrieved 2026-10-09, 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