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AD4054

IDCHIP · Battery Management ICs · SOT-23-5

AD4054 from IDCHIP, 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 pulled low by an internal N-channel MOSFET during charging, with a weak ~20uA pull-down at end of charge and high impedance when undervoltage lockout is detected.
2 GND power_in Power ground.
3 BAT power_out Charge current output to the battery that regulates the final float voltage to 4.2V via a precision internal resistor divider, which is disconnected in shutdown mode.
4 VCC power_in Input supply of 4.25V-5.5V that should be bypassed with at least a 1uF capacitor, and the charger enters shutdown when VCC falls to within 30mV of the BAT voltage, reducing IBAT below 2uA.
5 PROG bidirectional Charge current program, charge current monitor and shutdown pin: a 1% resistor RPROG to ground sets the current, the pin is held at 1V in constant-current mode with IBAT=(VPROG/RPROG)*800, and a 1.22V shutdown threshold (2.5uA pull-up when RPROG is removed) puts the charger in shutdown with supply current of 45uA.

Key specifications

Parameter Value
Manufacturer IDCHIP
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 4.3 5 5.5 V 4
Float voltage VFLOAT 4.15 4.2 4.242 V 0℃≤TA≤85℃ 4
BAT pin current, current mode IBAT 100 110 120 mA RPROG=2.4K, current mode 4
BAT pin current, current mode IBAT 475 500 520 mA RPROG=1.2K, current mode 4
Trickle charge current ITRIKL 20 50 70 mA VBAT<VTRIKL, RPROG=1.2K 4
Trickle charge threshold voltage VTRIKL 2.8 2.9 3 V RPROG=1.2K, VBAT rising 4
Trickle charge hysteresis voltage VTRHYS 60 80 100 mV RPROG=1.2K 4
VCC undervoltage lockout threshold VUV 3.5 3.7 3.9 V VCC from low to high 4
VCC undervoltage lockout hysteresis VUVHYS 150 200 300 mV 4
VCC-VBAT lockout threshold voltage VASD 60 100 140 mV VCC from low to high 4
VCC-VBAT lockout threshold voltage VASD 5 30 50 mV VCC from high to low 4
C/10 termination current threshold ITERM 60 70 80 mA 4
C/10 termination current threshold ITERM 120 130 140 mA 4
PROG pin voltage VPROG 0.9 1 1.1 V RPROG=1.2K, current mode 4
CHRG pin output low voltage VCHRG 0.1 0.35 0.6 V ICHRG=5mA 4
CHRG pin weak pull-down current ICHRG 7 12 20 uA VCHRG=5V 4
Recharge battery threshold voltage ΔVRECHRG 100 150 200 mA VFLOAT-VRECHRG 4
Recharge comparator filter time tRECHARGE 0.8 1.8 4 ms VBAT high to low 4
Termination comparator filter time tTERM 0.8 1.8 4 ms IBAT falls below ICHG/10 4
Supply current, charge mode ICC 150 500 µA Charge mode, RPROG=1.2K 4
Junction temperature in thermal limiting TLIM 145 ℃ 4
Power FET on resistance RON 500 mΩ between VCC and BAT 4
Soft-start time tss 20 µs IBAT=0, IBAT=1200v/RPROG 4
PROG pin pull-up current IPROG 2 µA 4
Input supply voltage (abs max) VCC 4.2 5.5 V printed as 4.2~5.5V 3
PROG pin voltage (abs max) PROG -0.3 V -0.3 ~ VCC+0.3V 3
BAT pin voltage (abs max) BAT -0.3 5 V 3
CHRG pin voltage (abs max) CHRG -0.3 5 V 3
BAT pin current (abs max) 600 mA 3
PROG pin current (abs max) 600 uA 3
Maximum junction temperature 145 ℃ 3
Operating ambient temperature range -40 85 ℃ 3
Storage temperature range -65 125 ℃ 3
Lead temperature 260 ℃ soldering 10 seconds 3

CAD (KiCad official)

  • Symbol: AD4054
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ad4054-etched.step / ad4054-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad4054.step / ad4054.glb are the bare package body.

Provenance

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

  • Datasheet: IDCHIP datasheet (6 pp, sha256 c28dca5e0529651b, retrieved 2026-10-23, 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