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HX4057A

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by Ray

HX hengjiaxing Battery Management, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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HX4057A

HX hengjiaxing · Battery Management · SOT-23-6

HX4057A from HX hengjiaxing, 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 Open-drain charge-status indicator. Pulled low internally while charging is in progress; enters weak (~20 uA) pull-down when charging completes; high-impedance when VCC is below UVLO or (VCC - VBAT) < 30 mV. VCHRG(low) typ 0.3 V @ 5 mA.
2 GND power_in Device ground / power-supply return.
3 BAT power_out Battery positive-terminal connection. Sources the charge current and regulates to a 4.2 V ±1% float voltage. In shutdown or sleep, BAT leakage is < 3 uA. Absolute max 7 V, continuous BAT current rated to 600 mA (typ. 500 mA charge).
4 VCC power_in Input supply (USB or adapter). Operating range 4.0-6 V (typ 5 V, abs max 7 V). Charging enables when VCC exceeds UVLO (~3.7 V rising) and is at least ~100 mV above BAT; otherwise the part enters low-power shutdown (< 3 uA on BAT).
5 STDBY output Open-drain charge-complete indicator. Pulled low internally when charging has finished; otherwise high-impedance. VSTDBY(low) typ 0.3 V @ 5 mA.
6 PROG input Charge-current programming pin. A resistor RPROG from PROG to GND sets the constant-current level: IBAT = 1000 V / RPROG (e.g. 2 kΩ → 500 mA, 10 kΩ → 100 mA). Pin regulates to 1 V in CC mode and to 0.1 V during trickle charge; charging terminates when PROG falls below ~100 mV for > 2 ms (C/10 detect). Absolute max ±0.3 V (with respect to GND) / 600 uA.

Key specifications

Parameter Value
Manufacturer HX hengjiaxing
Package SOT-23-6
Category PMIC
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • HX4057A

CAD (KiCad official)

  • Symbol: HX4057A
  • 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: HX hengjiaxing datasheet (6 pp, sha256 195943bf568b6bbe, 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