component
FH2120-CB
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XIN FEI HONG Battery Management, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+48@@ -0,0 +1,48 @@+# FH2120-CB++**XIN FEI HONG** · Battery Management · SOT-23-6++FH2120-CB 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 | DO | output | Discharge control MOSFET gate connection. CMOS output driven to VDD (VDH = VDD-0.02V typ) in normal state and pulled to VSS (VDL = 0.2V typ) when overdischarge, discharge overcurrent, or load short-circuit is detected. |+| 2 | CO | output | Charge control MOSFET gate connection. CMOS output driven to VDD (VCH = VDD-0.02V typ) in normal state and pulled low (VCL = 0.2V typ, referenced to VM) when overcharge or charge overcurrent is detected. |+| 3 | VM | input | Overcurrent sense and charger-detection input. Monitors the pack P- node through R3 (typ 2 kΩ) to detect discharge overcurrent (VEC = 0.20V), load short-circuit (VSHORT = 1.0V), and charge overcurrent (VCHA = -0.21V). Absolute range VDD-28V to VDD+0.3V. |+| 4 | VC | input | Mid-point sense input: negative terminal of cell 1 and positive terminal of cell 2. Used together with VDD/VSS to measure both series cells independently for overcharge/overdischarge detection. |+| 5 | VDD | power_in | Positive supply input; connects to the positive terminal of cell 1 (pack +) through R1 (typ 330 Ω) with a 0.1 μF decoupling cap from VDD to VC. Absolute VDD-VC and VC-VSS range -0.3V to +8.0V. |+| 6 | VSS | power_in | Ground / negative supply input; connects to the negative terminal of cell 2 (pack B-) through R2 (typ 330 Ω) with a 0.1 μF cap from VC to VSS. Reference for all internal voltages. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XIN FEI HONG |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `FH2120-CBCB`+- `FH2120-CBDB`+- `FH2120-CBNB`++## CAD (KiCad official)++- Symbol: `FH2120-CB`+- 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/fh2120-cb-datasheet.pdf) (9 pp, sha256 `90ce8097b75815d8`, 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/fh2120-cb-datasheet.pdf)
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