FHDW01A

@@ -0,0 +1,42 @@+# FHDW01A++**XIN FEI HONG** · Battery Management · SOT-23-6++FHDW01A from XIN FEI HONG, 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 | DOUT | output | Discharge control output. Connects to the gate of the external discharge-control N-MOSFET Q2. High (=VDD) in normal state to turn Q2 on; pulled to VSS to disable discharge on overdischarge/overcurrent/short-circuit protection. |+| 2 | VM | input | Charge/discharge current sense input. Connects through a current-limit resistor (typ. 1kΩ, R2) to the source of the external charge-control N-MOSFET Q1, sensing the voltage drop across Q1+Q2 to detect discharge overcurrent, short-circuit and charger presence (VCHG typ. -0.5V, VEDI typ. 0.150V, VSHORT typ. 1.260V vs VSS). |+| 3 | COUT | output | Charge control output. Connects to the gate of the external charge-control N-MOSFET Q1. High (=VDD) in normal state to turn Q1 on; pulled to VM to disable charging on overcharge protection. |+| 4 | NC | unconnected | No connect. Leave floating (悬空). |+| 5 | VDD | power_in | Positive supply / battery-sense input. Connects to the battery positive terminal through R1 (typ. 100Ω) and should be decoupled with a 0.1µF ceramic capacitor to VSS. Operating range 1.5V-10V; absolute max -0.3V to +10V. |+| 6 | VSS | power_in | Ground / negative supply. Connects to the battery negative terminal. All threshold voltages in the datasheet are referenced to VSS. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XIN FEI HONG |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## CAD (KiCad official)++- Symbol: `FHDW01A`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XIN FEI HONG datasheet](docs/fhdw01a-datasheet.pdf) (9 pp, sha256 `d7b1e642d37634b0`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/fhdw01a-datasheet.pdf)

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