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pt438

Public Made by Adom

by adom

PUOLOP Battery Management, SOT-23-6L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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PT438

PUOLOP · Battery Management · SOT-23-6L

PT438 from PUOLOP, in a SOT-23-6L. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OD output Discharge control MOSFET gate driver. Drives the gate of the discharge-control N-MOSFET; high (~VCC) enables discharge, low (~GND) disables it during over-discharge/over-current/short-circuit protection. VODH = VCC-0.02V typ, VODL = 0.1V typ.
2 CS input Current-sense and charger-detect input. Monitors the voltage between BATT- and GND (across the two series MOSFETs) to detect discharge over-current (VOI1=176mV typ), load short-circuit (VOI2=1.00V typ), and charger connection (VCH). Absolute max VCC-14V to VCC+0.3V.
3 OC output Charge control MOSFET gate driver. Drives the gate of the charge-control N-MOSFET; high (~VCC) enables charging, low (~GND) disables charging during over-charge protection. VOCH = VCC-0.02V typ, VOCL = 0.1V typ.
4 TD input Test pin used to shorten the over-charge detection delay time so factory test cycles are reduced. Normally left unconnected in application (see typical application circuit).
5 VCC power_in Positive supply, connected to the battery positive terminal through a series resistor R1 (typ 100 Ω) with a 0.1 µF decoupling capacitor C1 to GND for charger ripple/disturbance suppression. Operating VCC range 2V to 5V (typ 3.6V); absolute max GND-0.3V to GND+10V.
6 GND power_in Ground reference, connected to the battery negative terminal via the decoupling capacitor node. All internal detection voltages are referenced to this pin.

Key specifications

Parameter Value
Manufacturer PUOLOP
Package SOT-23-6L
Category PMIC
Pins 6

CAD (KiCad official)

  • Symbol: PT438
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6L (KiCad packages3D, STEP)
  • 3D model files: pt438-etched.step / pt438-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pt438.step / pt438.glb are the bare package body.

Provenance

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

  • Datasheet: PUOLOP datasheet (None pp, sha256 e81e24170c67e283, retrieved 2026-08-17, 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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