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NSL2020B

Public Made by Adom

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

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Contents

README

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NSL2020B

WXNSIC · Battery Management · SOT-23-6

NSL2020B from WXNSIC, 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 VDD power_in Battery positive connection, tied to the cell positive terminal; absolute maximum supply voltage is -0.3 V to 4.5 V referenced to GND.
2 GND power_in Chip ground, connected to the battery negative terminal; all voltage ratings are referenced to this pin.
3 VCC power_in Charging port that accepts charger input (the datasheet states the chip can take power directly from a USB port); no voltage limit for this pin is given in the text.
4 SW input Signal input connected to the microphone (pneumatic) sensor; absolute maximum voltage is -0.3 V to VDD+0.3 V.
5 LED output Drive output for the working indicator LED; absolute maximum voltage is -0.3 V to VDD+0.3 V, and the LED output current is specified as 5 mA.
6 AT output Drive-current output connected to the load, switched by the integrated discharge MOS (RDS,ON 80 mΩ typ., 5 A discharge overcurrent threshold); absolute maximum voltage is -0.3 V to 6 V and recommended discharge current is up to 3.5 A.

Key specifications

Parameter Value
Manufacturer WXNSIC
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
电源电压 VDD -0.3 4.5 V 5
负载端电压，充电时作为电源引脚 VAT -0.3 6 V 5
采样端电压 VSW -0.3 V 5
LED 端电压 VLED -0.3 V 5
操作温度 TOPR -20 125 ℃ 5
保存温度 TSTG -40 150 ℃ 5
静电保护（HBM 模型） ESD 2000 V HBM 模型 5
放电电流 IOUT 3.5 A 5
工作环境温度 TA -40 85 ℃ 5
充电时 VDD 端空载电压 VOPEN 3.3 3.5 4.2 V 充电时 6
静态电流（省电模式） IQ 2.5 5 μA 省电模式 6
充电电流 2 ICH 30 40 50 mA VDD＜2.7 6
放电保护时间 TMAX 8 10 12 S 6
芯片过温保护阈值 TOTP 140 160 180 ℃ 6
充电时热保护阈值 TCH 120 140 160 ℃ 6
输出过载 RLOAD 0.8 1.2 1.5 Ω 6
低压检测阈值 VUVLO 3.3 V 6
恒压输出（空载） VAT 3.5 V 6
充电电流 1 ICH 650 mA 2.7≤VDD≤4.1 6
VDD 输出电压（充满） VFULL 4.2 V 6
放电开关管导通阻抗 RDS,ON 80 mΩ 6
放电过流保护阈值 IOCP 5 A 6
过流保护响应时间 tOCP 10 μS 6
短路保护阈值 RSP 0.4 Ω 6
LED 输出电流 ILED 5 mA 6

CAD (KiCad official)

  • Symbol: NSL2020B
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: nsl2020b-etched.step / nsl2020b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); nsl2020b.step / nsl2020b.glb are the bare package body.

Provenance

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

  • Datasheet: WXNSIC datasheet (9 pp, sha256 82779fa58f0e74c6, 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