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SD2054

Public Made by Adom

by adom

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

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SD2054

SHOUDING · Battery Management ICs · SOT-23-5

SD2054 from SHOUDING, 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 while charging, ~20µA weak pull-down when charge is complete, and high impedance when undervoltage lockout is detected.
2 GND power_in Ground.
3 BAT power_out Charge current output to the battery, regulating the final float voltage to 4.2V.
4 VCC power_in Positive input supply of 4.25V to 6.5V, requiring at least a 1µF bypass capacitor; enters shutdown when within 30mV of the BAT voltage, dropping BAT current below 2µA.
5 PROG bidirectional Charge current program, monitor and shutdown pin: a 1% resistor to ground sets IBAT = (VPROG/RPROG)×1000 with 1V at constant-current, floating it enters shutdown at 1.21V (3µA pull-up), and the pin clamps at about 2.4V.

Key specifications

Parameter Value
Manufacturer SHOUDING
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 voltage Vcc 4.25 6.5 V 6
Input current, charge mode Icc 300 2000 µA Charge mode, Rprog=10K 6
Input current, standby mode Icc 200 500 µA Standby mode 6
Input current, shutdown mode Icc 2 4 µA Shutdown mode (Rprog not connected, Vcc<Vbat or Vcc<Vuv) 6
Output control (float) voltage Vfloat 4.158 4.2 4.342 V 0℃<TA<85℃, IBAT=40mA 6
BAT pin current, 10k Ibat 93 100 107 mA Rprog=10k, Current mode 6
BAT pin current, 2k Ibat 465 500 535 mA Rprog=2k, Current mode 6
BAT pin current, standby Ibat 0 -2.5 -6 µA Standby mode, Vbat=4.2V 6
BAT pin current, shutdown Ibat 1 2 µA Shutdown mode 6
BAT pin current, sleep Ibat 1 2 µA Sleep mode, Vcc=0V 6
Trickle charge current Itrikl 20 45 70 mA Vbat<Vtrikl, Rprog=2k 6
Trickle charge threshold voltage Vtrikl 2.8 2.9 3 V Rprog=10K, Vbat Rising 6
Trickle charge hysteresis voltage Vtrhys 60 80 110 mV Rporg=10k 6
Undervoltage lockout threshold Vuv 3.7 3.8 3.93 V From Vcc low to high 6
Undervoltage lockout hysteresis Vuvhys 150 200 300 mV 6
Manual shutdown threshold, rising Vmsd 1.15 1.21 1.3 V PROG pin rising 6
Manual shutdown threshold, falling Vmsd 0.9 1 1.1 V PROG pin falling 6
Vcc-Vbat shutdown threshold, rising Vasd 70 100 140 mV Vcc from low to high 6
Vcc-Vbat shutdown threshold, falling Vasd 5 30 50 mV Vcc from high to low 6
C/10 termination threshold current, 10k Iterm 0.085 0.1 0.115 mA/mA Rprog=10k 6
C/10 termination threshold current, 2k Iterm 0.085 0.1 0.115 mA/mA Rprog=2k 6
PROG pin voltage Vprog 0.93 1 1.07 V Rprog=10k, Current mode 6
CHRG pin weak pull-down current Ichrg 8 20 35 µA Vchrg=5V 6
CHRG pin output low voltage Vchrg 0.35 0.6 V Ichrg=5mA 6
Recharge battery threshold voltage ΔVrecg 100 200 mV VFLOAT - VRECHRG 6
Input voltage Vcc -0.3 10 V VSS-0.3 to VSS+10 5
PROG pin voltage Vprog -0.3 V VSS-0.3 to Vcc+0.3 5
BAT pin voltage Vbat -0.3 7 V Vss-0.3 to 7 5
CHRG pin voltage Vchrg -0.3 10 V VSS-0.3 to VSS+10 5
Power dissipation SOT-23-5L PD 250 mW SOT-23-5L 5
BAT pin current Ibat 500 mA 5
PROG pin current Iprog 800 uA 5
Operating ambient temperature Topa -40 85 °C 5
Storage temperature Tstr -65 125 °C 5

CAD (KiCad official)

  • Symbol: SD2054
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: sd2054-etched.step / sd2054-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sd2054.step / sd2054.glb are the bare package body.

Provenance

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

  • Datasheet: SHOUDING datasheet (10 pp, sha256 15faa59ad8b468b3, retrieved 2026-10-26, 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