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hx6610s
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HX hengjiaxing Battery Management, ESOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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markdownHX6610S
HX hengjiaxing · Battery Management · ESOP-8
HX6610S from HX hengjiaxing, 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_out | Battery positive terminal. Connects to the Li-ion cell's + terminal; delivers the trickle/CC/CV charge current from the internal PMOSFET. Float voltage is typically 4.22V (Vfloat range 4.18-4.26V). A 1uF bypass capacitor to GND should be placed close to this pin. |
| 2 | Vprog | input | Float-voltage programming pin. Left open (no R2) gives the default Vfloat = 4.22V. A resistor from Vprog to GND raises the float voltage (R = 2.20*265000/(Vprog-4.20)); a resistor from Vprog to BAT lowers it below 4.2V (R//265000 = (Vprog-2.2)*291500/2.2). Place R2 close to the pin to minimize Vfloat disturbance. |
| 3 | GND | power_in | Device ground / negative supply reference. All electrical parameters are referenced to this pin (0 V). |
| 4 | CT | input | Full-charge shutdown delay setting pin. A capacitor from CT to GND programs the delay before terminating charge / switching the indicator LED, per C = (1.5e-6 * T)/2.2 (e.g. 30 ms delay ≈ 20.5 nF). May be left unconnected when no delay/indicator transition is required. |
| 5 | Iprog | input | Charge-current programming pin (PROG). A 1% resistor from Iprog to GND sets the constant-current charge current per Ibat = 1200/R (e.g. 6 kΩ ⇒ 200 mA; max programmable ≈ 1 A). Pin voltage is ~0.1 V in trickle mode and ~1 V at full current. |
| 6 | CHRG | output | Open-drain charge-status indicator. Pulled low (LED on) while the chip is actively charging; high-impedance (LED off) when charging is complete, input is removed, or battery is shorted/reversed. Tie to VDD through an LED+resistor, or to GND if unused. |
| 7 | STDBY | output | Open-drain standby/full-charge indicator. Pulled low (LED on) when charging is finished or no battery is present; high-impedance while charging is in progress or under fault (short/reverse). Tie to VDD through an LED+resistor, or to GND if unused. |
| 8 | VDD | power_in | Positive supply input from USB or AC adapter. Operating range 4.5-6 V (absolute max 7 V); OVP trips at 6.2 V and charging stops. UVLO threshold ≈ 3.7 V (200 mV hysteresis). Place a 1 uF bypass capacitor to GND close to this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HX hengjiaxing |
| Package | ESOP-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
HX6610SHX6610SHX6610D
CAD (KiCad official)
- Symbol:
HX6610S - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HX hengjiaxing datasheet (None pp, sha256
c0de7ee6e4ef9855, 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).