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HE4057A

Public Made by Adom

by adom

HEERMICR Battery Management, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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HE4057A

HEERMICR · Battery Management · SOT-23-6

HE4057A from HEERMICR, in a SOT-23-6. 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 the charger is charging (VCHRG at most 0.5 V at 5 mA sink) and is high-impedance in other states, flashing when no battery is connected.
2 GND power_in Ground reference pin for the charger, to be connected to system ground.
3 BAT power_out Battery positive connection that delivers the charge current and regulates the battery to the float voltage of 4.20 V (4.16 V to 4.25 V); reverse-battery protection is provided.
4 VCC power_in Input supply pin, rated 4.50 V to 7.0 V (5.0 V typical) with an absolute maximum of 9 V, and the charger enters shutdown when VCC falls below the 3.8 V UVLO threshold.
5 STDBY output Open-drain charge-complete output that is pulled low when the battery charge cycle ends (VSTDBY at most 0.5 V at 5 mA sink) and is high-impedance otherwise.
6 PROG passive Programmable charge-current pin where a resistor to GND sets the constant charge current (charge current = 1000 × 1.0 V / RPROG, e.g. 100 mA at 10 kΩ and 500 mA at 2 kΩ), with an absolute maximum of 7 V.

Key specifications

Parameter Value
Manufacturer HEERMICR
Package SOT-23-6
Category Power Management (PMIC)
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
输入电源电压 VCC 4.5 5 7 V 3
输入电源电流 充电模式 ICC 240 500 uA RPROG=10K 3
输入电源电流 待机模式（充电终止） ICC 50 100 uA 待机模式（充电终止） 3
输入电源电流 停机模式 ICC 25 50 uA 停机模式（RPROG 未连接）; VCC < VBAT, or VCC < VUVLO 3
输出浮充电压 VFLOAT 4.16 4.2 4.25 V 0°C≤TA≤85°C,IBAT=40mA 3
BAT 端充电电流 恒流模式 RPROG=10K IBAT 90 100 110 mA 恒流模式，RPROG =10K 3
BAT 端充电电流 恒流模式 RPROG=2K IBAT 450 500 550 mA 恒流模式，RPROG =2K 3
BAT 端待机模式电流 IBAT 0 -2 -5 uA 待机模式，VBAT =4.20V 3
BAT 端停机模式电流 IBAT 1 2 uA 停机模式 3
电池反接模式电流 IBAT 0.7 mA 电池反接模式，VBAT =-4.0V 3
睡眠模式电流 IBAT 0 1 uA 睡眠模式，VCC = 0 V 3
涓流充电电流 ITRIKL 40 50 60 mA VBAT＜VTRIKL, RPROG=2K 3
涓流充电门限电压 VTRIKL 2.8 2.9 3 V VBAT上升 3
涓流充电迟滞电压 VTRHYS 60 80 110 mV VBAT下降 3
VCC 欠压锁定电压 VUVLO 3.6 3.8 4 V VCC上升 3
VCC 欠压锁定迟滞电压 VUVHYS 150 200 250 mV VCC下降 3
手动关断阈值电压（上升） VMSD 1.1 1.2 1.3 V VPROG上升 3
手动关断阈值电压（下降） VMSD 0.9 1 1.1 V VPROG下降 3
VCC-VBAT 锁闭电压（上升） VASD 70 100 140 mV VCC上升 3
VCC-VBAT 锁闭电压（下降） VASD 5 30 50 mV VCC下降 3
C/10 终止电流门限 RPROG=10K ITERM 0.1 0.12 mA/ mA RPROG=10K 3
C/10 终止电流门限 RPROG=2K ITERM 0.1 0.12 mA/ mA RPROG=2K 3
PROG 引脚电压 VPROG 0.9 1 1.1 V 恒流模式，RPROG=10K 3
CHRG 端输出低电平 VCHRG 0.35 0.5 V ICHRG=5mA 3
STDBY 端输出低电平 VSTDBY 0.35 0.5 V ISTDBY=5mA 3
再充电电池门限电压 VRECHG 100 150 mV VFLOAT-VRECHG 3
再充电延时时间 tRECHG 0.8 1.8 4 ms VBAT由高到低 3
充电终止延时时间 tTERM 0.6 1.4 3 ms IBAT降至 ICHG/10 以下 3
输入电压 VIN -0.3 9 V 2
PROG 端电压 -0.3 7 V 2
工作温度范围 -40 85 °C 2
工作结温 125 °C 2
焊接温度 (Soldering, 10sec) -260 260 °C 10 sec 2
ESD (Machine Mode) -200 200 V 2
ESD (Human Body Mode) -2000 2000 V 2
VBAT 端电压 VBAT -0.3 7 V 2
CHRG、STDBY 端电压 -0.3 7 V 2
储存温度范围 Tstg -65 125 °C 2
热阻 θJC θJC 135 °C/W 2
IPROG PROG 端上拉电流 IPROG 2 uA 3

CAD (KiCad official)

  • Symbol: HE4057A
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: he4057a-etched.step / he4057a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); he4057a.step / he4057a.glb are the bare package body.

Provenance

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

  • Datasheet: HEERMICR datasheet (7 pp, sha256 b0d0ec02032b8453, retrieved 2026-10-18, 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-haiku-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