BRCL4056SE

@@ -0,0 +1,49 @@+# BRCL4056SE++**Foshan Blue Rocket Elec** · Battery Management · ESOP-8++BRCL4056SE from Foshan Blue Rocket Elec, in a ESOP-8. 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 | TEMP | input | Battery temperature sense input. Connect to the output of an NTC thermistor on the battery pack. Charging is paused if V(TEMP) < 45%·VCC or > 80%·VCC (battery too hot/cold), and resumes when the voltage returns inside that window. Tie to GND to disable the temperature-monitoring function. |+| 2 | PROG | passive | Charge-current program and monitor pin. A resistor R_PROG from PROG to GND sets the charge current: precharge clamps V(PROG) to 0.1V and constant-current mode regulates V(PROG) to 1.0V, so I_BAT = (V_PROG / R_PROG) × 1000. The pin voltage can also be read to monitor instantaneous charge current in all charge states. |+| 3 | GND | power_in | Device ground / power return. |+| 4 | VCC | power_in | Positive supply input, 4.5V-6.5V operating range (absolute max 10V). Powers the internal circuitry and the pass FET to the battery. When (VCC − V_BAT) falls below ~80mV, the part enters low-power sleep mode and BAT sink current drops below 2µA. |+| 5 | BAT | power_out | Battery connection / charge output. Sources charge current to the single-cell Li+ pack and regulates it to 4.2V float. Draws less than 2µA from the battery when the part is disabled or in sleep mode. |+| 6 | STDBY | output | Open-drain charge-complete (standby) indicator. Internal switch pulls low when charging has terminated (battery full); otherwise the pin is high-impedance. Absolute max sink current 10mA - typically drives an LED to VCC through a series resistor. |+| 7 | CHRG | output | Open-drain charging-in-progress indicator. Internal switch pulls low while the charger is actively delivering current to the battery; otherwise the pin is high-impedance. Absolute max sink current 10mA - typically drives an LED to VCC through a series resistor. |+| 8 | CE | input | Chip-enable input. Logic high enables normal charging operation; logic low forces the device into charge-disabled state. Compatible with TTL and CMOS logic levels (V_IH ≥ 1.5V, V_IL ≤ 0.4V). |+| 9 | EPAD | power_in | Exposed thermal pad on the package bottom. Must be soldered to a PCB ground copper plane to achieve the specified thermal performance and to provide electrical ground contact. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Foshan Blue Rocket Elec |+| Package | ESOP-8 |+| Category | PMIC |+| Pins | 9 |++## Ordering variants++- `BRCL4056SE`++## CAD (KiCad official)++- Symbol: `BRCL4056SE`+- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`+- 3D model: ESOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Foshan Blue Rocket Elec datasheet](docs/brcl4056se-datasheet.pdf) (11 pp, sha256 `be9b7b61a6cb5090`, 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/brcl4056se-datasheet.pdf)

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