component
QK1201
Public Unreviewedby Ray
HICHON Battery Management, ESOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownQK1201
HICHON · Battery Management · ESOP-8
QK1201 from HICHON, 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 | BAT | power_in | Battery positive terminal. Connects to the Li-ion cell (+). Float charge voltage 4.20V ±1%, trickle-charge threshold 2.7V, discharge cutoff 2.5V, re-enable 2.9V. Absolute max -5V to +4.5V. |
| 2 | LED | output | Indicator-LED anode drive. Sources ~3 mA typical. Blinks 1 Hz 50% during charging, solid on when fully charged, 0.5s-on / 4.5s-off when battery < 2.9 V, 8× 1 Hz blinks when battery < 2.5 V. |
| 3 | VDD | power_in | Charger input power (from USB / 5 V rail). Operating range 3.6 V-5 V; UVLO ≈ 2.55 V. Absolute max -5V to +5.5V. |
| 4 | BAT2 | power_in | Supply pin for the internal LDO. Must be tied to the BAT pin per typical application circuit. |
| 5 | LDO | power_out | Internal LDO output. Requires a 10 µF decoupling capacitor to GND per typical application. |
| 6 | K1 | input | Capacitive touch input. Registers a valid touch when contact lasts between 54 ms and 5 s; >5 s auto-shuts OUT off (safety). Sensitivity is tuned by an optional 1-50 pF cap from K1 to GND (larger cap = less sensitive). |
| 7 | SEL | input | Dimming-sequence select. Float: touch cycles OUT duty 25%→50%→100%→0. Tied to GND: touch cycles OUT duty 100%→50%→25%→0. PWM frequency 30 kHz. |
| 8 | OUT | output | Open-drain low-side switch to the LED lamp cathode. Internal NMOS Rds(on) ~150 mΩ. LED short-circuit protection trips at IOCP ≈ 2.5 A (VBAT = 3.7 V). Absolute max -0.3V to +5.5V. |
| 9 | GND | power_in | Chip ground and exposed thermal die pad on the underside of the ESOP-8 package. Must be soldered to the PCB ground plane for thermal dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HICHON |
| Package | ESOP-8 |
| Category | PMIC |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
QK1201 - 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: HICHON datasheet (6 pp, sha256
3d731d5351b46893, 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).