HY2120-LB

@@ -0,0 +1,45 @@+# HY2120-LB++**HYCON Tech** · Battery Management · SOT-23-6++HY2120-LB from HYCON Tech, 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 | OD | output | MOSFET gate connection pin for discharge control. Drives the discharge-path N-MOSFET (M1). Output 'H' = VDD-0.02V typ, output 'L' = 0.2V typ; V_OD absolute max VSS-0.3 to VDD+0.3 V. |+| 2 | OC | output | MOSFET gate connection pin for charge control. Drives the charge-path N-MOSFET (M2). Output 'H' = VDD-0.02V typ, output 'L' = 0.2V typ; high-withstanding-voltage pin, V_OC absolute max VDD-33 to VDD+0.3 V. |+| 3 | CS | input | Input pin for current sense and charger detect. Senses the voltage across the external MOSFET stack for discharge-overcurrent, short-circuit, and charge-overcurrent detection; also detects charger insertion. High-withstanding-voltage pin, V_CS absolute max VDD-33 to VDD+0.3 V. Typically connected to PB- through a 2kΩ resistor. |+| 4 | VC | input | Center-tap input for the two-cell battery stack. Connects to the node between Cell1 and Cell2 through a 330Ω resistor with a 0.1µF filter cap to VSS; enables per-cell overcharge/overdischarge monitoring. |+| 5 | VDD | power_in | Positive supply pin (connects to the top of the 2-cell stack, PB+). Operating range 1.5V to 10V; absolute max VSS-0.3 to VSS+10V. Typical supply current 5µA (9µA max) at VDD=7.8V; 0.1µA max power-down at VDD=4.0V. Bypass with 0.1µF cap to VSS, feed via 330Ω series resistor. |+| 6 | VSS | power_in | Ground pin. Reference for all internal circuitry; connects to the bottom of the 2-cell stack (Cell2 negative terminal). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HYCON Tech |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `HY2120-LBLB`++## CAD (KiCad official)++- Symbol: `HY2120-LB`+- 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:** [HYCON Tech datasheet](docs/hy2120-lb-datasheet.pdf) (22 pp, sha256 `844f87e84a0b25dc`, 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/hy2120-lb-datasheet.pdf)

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