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HX4055M

Public Made by Adom

by adom

HX(hengjiaxing) Battery Management ICs, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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HX4055M

HX(hengjiaxing) · Battery Management ICs · SOT-23-5

HX4055M from HX(hengjiaxing), in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CHRG output Open-drain charge status output that is pulled low while charging and is high-impedance otherwise (sinks up to 10mA to drive an LED; absolute max -0.3V to 10V).
2 GND power_in Ground.
3 BAT power_out Charge current output to the battery, with a 4.2V (±1%) float voltage and a maximum pin current of 500mA.
4 VCC power_in Positive input supply voltage, operating range 4.0V to 9.0V (absolute max -0.3V to 9V), with undervoltage lockout threshold of 3.6V typical.
5 PROG bidirectional Charge current programming, charge current monitor and shutdown pin: a resistor to ground sets the charge current, leaving it floating shuts down the charger (absolute max -0.3V to VCC+0.3V).

Key specifications

Parameter Value
Manufacturer HX(hengjiaxing)
Package SOT-23-5
Category Power Management ICs
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input supply voltage VCC 4 5 9 V 3
Input supply current, charge mode ICC 150 500 uA Charge mode, RPROG=11K 3
Input supply current, standby mode ICC 40 100 uA Standby mode (charge terminated) 3
Input supply current, shutdown mode ICC 40 100 uA Shutdown mode (RPROG not connected, VCC<VBAT, or VCC<VUV) 3
Regulated output (float) voltage VFLOAT 4.158 4.2 4.242 V 0°C≤TA≤85°C, IBAT=40mA 3
BAT pin current, current mode IBAT 80 100 120 mA RPROG=11K, current mode 3
BAT pin current, current mode IBAT 290 310 320 mA RPROG=3.6K, current mode 3
BAT pin current, current mode IBAT 480 500 520 mA RPROG=2.2K, current mode 3
Trickle charge current ITRIKL 10 15 20 mA VBAT<VTRIKL, RPROG=11K 3
Trickle charge threshold voltage VTRIKL 2.75 2.9 3 V RPROG=11K, VBAT rising 3
Trickle charge hysteresis voltage VTRHYS 60 80 100 mV RPROG=11K 3
VCC undervoltage lockout threshold VUV 3.4 3.6 3.8 V From VCC low to high 3
VCC undervoltage lockout hysteresis VUVHYS 150 200 300 mV 3
Manual shutdown threshold voltage, rising VMSD 3.4 3.5 3.6 V PROG pin rising 3
Manual shutdown threshold voltage, falling VMSD 1.9 2 2.1 V PROG pin falling 3
VCC-VBAT lockout threshold voltage, rising VASD 60 100 140 mV VCC from low to high 3
VCC-VBAT lockout threshold voltage, falling VASD 5 30 50 mV VCC from high to low 3
C/10 termination current threshold ITERM 8 10 12 mV RPROG=11K 3
C/10 termination current threshold ITERM 30 40 50 mV RPROG=1.66K 3
PROG pin voltage VPROG 0.9 1 1.1 V RPROG=11K, current mode 3
CHRG pin leakage current ICHRG 0 1 uA VCHRG=5V (standby mode) 3
CHRG pin output low voltage VCHRG 0.3 0.6 V ICHRG=5mA 3
Recharge battery threshold voltage ΔVRECHRG 100 150 200 mV VFLOAT-VRECHRG 3
Junction temperature in thermal limiting TLIM 120 ℃ 3
Power FET on resistance RON 650 mΩ Between VCC and BAT 3
Soft-start time tss 20 uS IBAT=0 to IBAT=1000V/RPROG 3
Recharge comparator filter time tRECHARGE 0.8 1.8 4 mS VBAT high to low 3
Termination comparator filter time tTERM 0.8 1.8 4 mS IBAT falling below ICHG/10 3
PROG pin pull-up current IPROG 2 uA 3
Input supply voltage VCC -0.3 9 V 2
PROG pin voltage PROG -0.3 V -0.3V to VCC+0.3V 2
BAT pin voltage BAT -4.2 7 V 2
CHRG pin voltage CHRG -0.3 10 V 2
BAT pin current IBAT 500 mA 2
Operating ambient temperature range TA -40 85 ℃ 2
Storage temperature range TSTG -65 125 ℃ 2

CAD (KiCad official)

  • Symbol: HX4055M
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: hx4055m-etched.step / hx4055m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hx4055m.step / hx4055m.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HX(hengjiaxing) datasheet (10 pp, sha256 3883efda08d1b10d, retrieved 2026-10-27, 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: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF