FM2113

@@ -0,0 +1,48 @@+# FM2113++**Unknown** · Battery Management · SOT-23-6++FM2113 from Unknown, in a SOT-23-6. Pinout and pin descriptions extracted from the datasheet (via LCSC) by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | OD | output | Discharge control output. Connects to the gate of the external discharge control N-MOSFET (Q2). Drives high (VDD-0.02 V typ) in normal state and low (0.1 V typ) during over-discharge, over-current, or short-circuit protection. |+| 2 | CS | input | Discharge current sense input. Connects to the source/drain node of the external charge-control N-MOSFET (Q1) via a series resistor (typ 2 kΩ). Senses voltage drop across Q1+Q2 for over-current (VDIP ≈ 150 mV) and short-circuit (VSIP ≈ 1.0 V) detection. Absolute max rating VDD-20 V to VDD+0.3 V. |+| 3 | OC | output | Charge control output. Connects to the gate of the external charge control N-MOSFET (Q1). Drives high (VDD-0.02 V typ) in normal state and low (0.1 V typ) during over-charge or charge-over-current protection. Absolute max rating VDD-20 V to VDD+0.3 V. |+| 4 | NC | unconnected | Not connected. Leave floating or tie per PCB layout convention. |+| 5 | VDD | power_in | Power supply input. Connect to the positive terminal of the battery through a 100 Ω series resistor (R1). A 0.1 µF ceramic decoupling capacitor is required between VDD and VSS. Operating range 1.5 V to 8 V (absolute max VSS-0.3 to VSS+10 V). Operating current 3.0 µA typ at VDD=3.9 V. |+| 6 | VSS | power_in | Ground / negative supply. Connect to the negative terminal of the battery cell. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Unknown |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `FM2113A`+- `FM2113B`+- `FM2113C`+- `FM2113D`++## CAD (KiCad official)++- Symbol: `FM2113`+- 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:** [Unknown datasheet](https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2202251530_Shenzhen-Fuman-Elec-FM2113_C2832124.pdf) (8 pp, sha256 `60016c51cced1a1c`, retrieved 2026-08-17, tier: lcsc)+- **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/fm2113-datasheet.pdf)

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