component
IP5306_4.35V
Public Made by Adomby adom
INJOINIC Battery Management ICs, SOP-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownIP5306_4.35V
INJOINIC · Battery Management ICs · SOP-8-EP
IP5306_4.35V from INJOINIC, in a SOP-8-EP. 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 | VIN | power_in | Charger 5V input pin, with input voltage specified at 4.75 V minimum, 5 V typical and 5.5 V maximum. |
| 2 | LED1 | output | Battery indicator pin1 for the state-of-charge LED display, with LED indicator current stated as 4 mA. |
| 3 | LED2 | output | Battery indicator pin2 for the state-of-charge LED display, with LED indicator current stated as 4 mA. |
| 4 | LED3 | output | Battery indicator pin3 for the state-of-charge LED display, with LED indicator current stated as 4 mA. |
| 5 | KEY | input | ON/OFF key input that is multiplexed as the torch lighting driver; a short push (30 ms to 2 s) opens the SOC LEDs and step-up converter. |
| 6 | BAT | input | Battery voltage sense pin, with battery operation voltage specified at 3.0 V minimum and 4.4 V maximum. |
| 7 | SW | passive | DCDC switch node that connects the inductor, used with a 1uH inductor in the stated test conditions. |
| 8 | VOUT | power_out | DCDC 5V output pin, with DC-DC output voltage specified at 5.10 V for VBAT=3.7V. |
| 9 | PowerPAD | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | INJOINIC |
| Package | SOP-8-EP |
| Category | Power Management ICs |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Port input voltage range | VIN | -0.3 | 5.5 | V | 4 | ||
| Operating free-air temperature range | TA | 0 | 70 | ℃ | 4 | ||
| Junction temperature | TJ | -40 | 150 | ℃ | 4 | ||
| Storage temperature | Tstg | -60 | 150 | ℃ | 4 | ||
| Human-body model (HBM) ESD | ESD | 4 | KV | Human-body model (HBM) | 4 | ||
| Thermal resistance (junction to ambient air) | θJA | 40 | ℃/W | 4 | |||
| Input voltage | VIN | 4.75 | 5 | 5.5 | V | 4 | |
| Load current | I | 0 | 2.1 | 2.6 | A | 4 | |
| Operating ambient temperature | TA | 0 | 70 | ℃ | 4 | ||
| Input voltage | VIN | 4.75 | 5 | 5.5 | V | Charger system | 5 |
| Input current (charging) | IVIN | 2 | mA | VIN=5V，fs=500KHz | 5 | ||
| Input current (standby) | 100 | uA | VIN=5V，Device not switching | 5 | |||
| Trickle charge current | ITRKL | 100 | mA | VIN=5v，BAT=2.7v | 5 | ||
| Battery operation voltage | VBAT | 3 | 4.4 | V | Boost system | 5 | |
| Battery operation current | IBAT | 3 | mA | VBAT=3.7V ， VOUT=5.1V ， fs=5000KHz | 5 | ||
| Battery operation current (device not switching) | IBAT | 100 | uA | VIN=5V，Device not switching | 5 | ||
| Output voltage ripple | ΔVOUT | 50 | 100 | 150 | mV | VBAT=3.7V ， VOUT=5.0V ， fs=500KHz | 5 |
| Load short-circuit detect timer | TOCD | 150 | 200 | us | Output current continuously larger than 3.5A | 5 | |
| Target charge voltage | VTRGT | 4.2 | V | Charger system | 5 | ||
| Charge current | ICHRG | 2.1 | A | Charger system | 5 | ||
| Trickle charge stop voltage | VTRKL | 2.9 | V | Charger system | 5 | ||
| Recharge threshold | VRCH | 4.1 | V | Charger system | 5 | ||
| Charger safety timer | TEND | 24 | Hour | Charger system | 5 | ||
| Input under-voltage protection | VUVLO | 4.5 | V | Rising voltage | 5 | ||
| Input under-voltage protection hysteresis | VUVLO | 200 | mV | 5 | |||
| DC-DC output voltage | VOUT | 5.1 | V | VBAT=3.7V | 5 | ||
| Boost output current | Ivout | 2.1 | A | 5 | |||
| Load over-current detect timer | TUVD | 30 | ms | Output voltage continuously lower than 4.4V | 5 | ||
| Switching frequency | 500 | KHz | Switching frequency | 5 | |||
| PMOS on resistance | rDSON | 35 | mΩ | 5 | |||
| NMOS on resistance | rDSON | 30 | mΩ | 5 | |||
| Battery standby current | ISTB | 50 | uA | VIN=0V，VBAT=3.7V | 6 | ||
| LED lighting current | Ilight | 25 | mA | 6 | |||
| LED indicator current | IL1 | 4 | mA | IL1, IL2, IL3 | 6 | ||
| Load removal detect timer | TloadD | 32 | s | Load current continuously lower than 45mA | 6 | ||
| Push-button wake-up timer | TOnDebounce | 50 | ms | 6 | |||
| Push-button light-on timer | TKeylight | 2 | s | 6 | |||
| Thermal shutdown | TOTP | 125 | ℃ | Rising temperature | 6 | ||
| Thermal shutdown hysteresis | ΔTOTP | 40 | ℃ | 6 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | abs | Human-body model (HBM) ESD 4 KV * Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. | 4 |
CAD (KiCad official)
- Symbol:
IP5306_4.35V - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: SOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
ip5306-4-35v-etched.step/ip5306-4-35v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ip5306-4-35v.step/ip5306-4-35v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: INJOINIC datasheet (11 pp, sha256
76818e77bf2002bf, retrieved 2026-10-28, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).