CN3130

@@ -0,0 +1,46 @@+# CN3130++**ShangHai Consonance Elec** · Battery Management · SOT-23-6++CN3130 from ShangHai Consonance Elec, 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 | CHRG | output | Charge status indicator. Open-drain output; pulled low by an internal switch while the charger is charging the battery, and goes high-impedance when charging completes. Sink current ~10 mA at V_CHRG=0.3V; leakage <1 uA at V_CHRG=6V. |+| 2 | FB | input | Battery voltage sense (feedback) input. Senses the positive terminal of the battery to precisely regulate the constant-voltage charge voltage, compensating for wire/contact resistance between the BAT pin and the cell. An optional resistor between FB and BAT can raise V_REG above 3.3V per V_REG = 3.3 + 3.707e-6 × Rx. |+| 3 | BAT | power_out | Battery connection. Sources charge current and the constant-voltage regulation to the battery positive terminal. Draws <3 uA from the battery when V_IN is below the UVLO threshold or in sleep mode. |+| 4 | VIN | power_in | Positive supply input, 3.9 V to 6 V operating range (absolute max 6.5 V). Powers the internal circuitry and provides charge current to the battery. When V_IN − V_BAT < 15 mV the part enters low-power sleep mode (I_BAT < 3 uA). |+| 5 | GND | power_in | Device ground / power return. |+| 6 | ISET | bidirectional | Charge-current program and monitor pin. An external resistor R_ISET from ISET to GND sets the constant charge current: I_CH = (V_ISET × 986) / R_ISET. V_ISET is regulated to 0.36 V in trickle/pre-charge and to 1.205 V in constant-current mode, so the pin voltage can also be read to monitor instantaneous charge current. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | ShangHai Consonance Elec |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `CN3130`++## CAD (KiCad official)++- Symbol: `CN3130`+- 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:** [ShangHai Consonance Elec datasheet](docs/cn3130-datasheet.pdf) (11 pp, sha256 `bbaf782bea98ab1b`, 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/cn3130-datasheet.pdf)

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