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IP5189T

Public Made by Adom

by adom

INJOINIC Battery Management, QFN-24-EP(4x4). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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IP5189T

INJOINIC · Battery Management · QFN-24-EP(4x4)

IP5189T from INJOINIC, in a QFN-24-EP(4x4). 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 L2 output LED battery-level indicator driver pin L2 (2-20 mA sink/source, typ 10 mA).
2 L3 output LED battery-level indicator driver pin L3 (2-20 mA sink/source, typ 10 mA).
3 VDD power_out Internal LDO output, 3.1V. Bypass to ground with a decoupling capacitor.
4 VTHS input Battery chemistry / cell platform selection input (selects 4.2V / 4.35V / 4.4V CV target).
5 RSET input Battery internal-resistance compensation pin; sets fuel-gauge curve fine-trim via external resistor.
6 NTC input Battery NTC thermistor sense input for temperature protection during charging.
7 AGND power_in Analog ground reference.
8 KEY input Pushbutton input (active low to GND). Short press (>80ms, <2s) turns on boost/LED display; double short press within 1s turns off boost and lights; long press (>2s) toggles flashlight LED.
9 VBAT power_in Boost input / Li-ion battery positive terminal (3.0-4.4V operating). Also acts as charger output to battery.
10 NC unconnected No connect. Leave floating or tie per PCB layout.
11 ICHG input External resistor sets charge current per ICHG = 1.2V / R * 100000 (e.g. 120kΩ→1A, 56kΩ→2.1A, NC→default 1.8A).
12 PGND power_in Power ground return for the DC-DC switch stage.
13 LX passive DCDC switch node. Pins 13, 14, 15 are tied together and connect to the 1µH boost/charge inductor.
14 LX passive DCDC switch node (parallel with pins 13, 15).
15 LX passive DCDC switch node (parallel with pins 13, 14).
16 VOUT power_out 5V boost output (5.0-5.15V @ 2.1A, up to 2.1A continuous). Pins 16, 17 tied together for USB Type-A output.
17 VOUT power_out 5V boost output (parallel with pin 16).
18 DP bidirectional USB Type-A output D+ line; used for DCP handshake / adapter recognition on the output port.
19 DM bidirectional USB Type-A output D- line; used for DCP handshake / adapter recognition on the output port.
20 VIN power_in 5V USB charging input (4.65-5.5V, up to 2.2A). Pins 20, 21 tied together for Micro-B/Type-C VBUS input.
21 VIN power_in 5V USB charging input (parallel with pin 20).
22 LIGHT output Flashlight LED driver, open-drain output (typ 30 mA sink). Toggled by long-press on KEY.
23 VSET input Battery-type / LED display count configuration input.
24 L1 output LED battery-level indicator driver pin L1 (2-20 mA sink/source, typ 10 mA).
25 GND power_in Exposed thermal pad (EPAD). Power ground and heatsink; must be soldered to the PCB GND plane for thermal dissipation.

Key specifications

Parameter Value
Manufacturer INJOINIC
Package QFN-24-EP(4x4)
Category PMIC
Pins 25

Ordering variants

Same part, different packaging or reel option.

  • IP5189T
  • IP5189T_YYY

CAD (KiCad official)

  • Symbol: IP5189T
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm
  • 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: ip5189t-etched.step / ip5189t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ip5189t.step / ip5189t.glb are the bare package body.

Provenance

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

  • Datasheet: INJOINIC datasheet (15 pp, sha256 a13a7ce16e0c1601, 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