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IP2365
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INJOINIC TECHNOLOGY Others, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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IP2365
INJOINIC TECHNOLOGY · Others · QFN-24-EP(4x4)
IP2365 from INJOINIC TECHNOLOGY, in a QFN-24-EP(4x4). 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 | VINSEN | input | Input voltage detection pin: above 1.5V allows normal operation, below 1.3V stops charging and enters standby, and RVS1/RVS2 set the input undervoltage threshold. |
| 2 | AGND | power_in | Analog ground pin. |
| 3 | ICHG | passive | Battery-side charge current setting pin; a resistor RICHG to GND sets ICC_BAT = 75K/RICHG (about 1.0A to 3.0A for 75K to 25K), and the pin must not be left floating. |
| 4 | IADP | passive | Input-side charge current setting pin; a resistor RIADP to GND sets ICC_ADP = 75K/RIADP, and the pin must not be left floating. |
| 5 | NC | unconnected | No connection; leave floating. |
| 6 | NC | unconnected | No connection; leave floating. |
| 7 | SCL | input | I2C clock input at 5V logic level; SCL and SDA must both be high at VIN power-up or when VINSEN rises to enter I2C mode, and I2C supports up to 400 Kbps. |
| 8 | LED | output | Charge status LED output: by default it flashes at 0.5Hz while charging and stays on when full. |
| 9 | SDA | bidirectional | I2C data line at 5V logic level; it must be high at power-up to enable I2C mode. |
| 10 | NTC | passive | NTC temperature sense pin that sources 20uA into an external NTC network to GND; if NTC protection is unused it must be tied to GND through 51K and must not float. |
| 11 | AGND | power_in | Analog ground pin. |
| 12 | FB | input | Output voltage feedback pin that selects the battery cell count and full-charge voltage through the RFB1/RFB2 divider; the charge target is 2.1V at the FB pin (2.075V to 2.125V). |
| 13 | VOUT | input | Output voltage sense pin used to sample the battery-side voltage. |
| 14 | BST | passive | Bootstrap pin for the high-side gate drive; the bootstrap capacitor must be placed close to the BST and LX pins, and VBST is rated -0.3 to VLX+8 V. |
| 15 | LX | output | DC-DC switching node connected to the inductor (10uH in the reference design); absolute maximum rating is -0.3 to 32 V. |
| 16 | LX | output | DC-DC switching node connected to the inductor (10uH in the reference design); absolute maximum rating is -0.3 to 32 V. |
| 17 | PGND | power_in | Power ground pin. |
| 18 | PGND | power_in | Power ground pin. |
| 19 | VSYS | power_out | System voltage pin; a 22uF ceramic capacitor (not electrolytic) must be placed close to the VSYS and PGND pins; absolute maximum rating is -0.3 to 28 V. |
| 20 | VSYS | power_out | System voltage pin; a 22uF ceramic capacitor (not electrolytic) must be placed close to the VSYS and PGND pins; absolute maximum rating is -0.3 to 28 V. |
| 21 | VSYS | power_out | System voltage pin; a 22uF ceramic capacitor (not electrolytic) must be placed close to the VSYS and PGND pins; absolute maximum rating is -0.3 to 28 V. |
| 22 | VIN | power_in | Input voltage pin; operating input range is 5V to 26V and absolute maximum rating is -0.3 to 28 V. |
| 23 | VIN | power_in | Input voltage pin; operating input range is 5V to 26V and absolute maximum rating is -0.3 to 28 V. |
| 24 | VIN | power_in | Input voltage pin; operating input range is 5V to 26V and absolute maximum rating is -0.3 to 28 V. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | INJOINIC TECHNOLOGY |
| Package | QFN-24-EP(4x4) |
| Category | Others |
| Pins | 25 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN/VSYS/VINSEN voltage range | VIN、VSYS、VVINSEN | -0.3 | 28 | V | 3 | ||
| VOUT/FB voltage range | VVOUT、VFB | -0.3 | 24 | V | 3 | ||
| LX voltage range | VLX | -0.3 | 32 | V | 3 | ||
| BST voltage range | VBST | -0.3 | V | Maximum printed as VLX+8 V (expression, not a number) | 3 | ||
| LED/NTC/ICHG/IADP/SCL/SDA voltage range | VLED/NTC/ICHG/IADP/SCL/SDA | -0.3 | 6 | V | 3 | ||
| Junction temperature range | TJ | -40 | 150 | ℃ | 3 | ||
| Storage temperature range | Tstg | -60 | 150 | ℃ | 3 | ||
| Input voltage (recommended operating) | VIN | 12 | 24 | V | Minimum printed as VBAT_END+0.8 (expression, not a number) | 3 | |
| Input voltage | VIN | 12 | 24 | V | Minimum printed as VBAT_END+0.8 (expression, not a number) | 3 | |
| Input overvoltage threshold, trigger voltage | VIN-OV | 26 | 27 | 28 | V | 触发电压 (trigger voltage) | 3 |
| Input overvoltage threshold, release voltage | VIN-OV | 24 | 25 | 26 | V | 解除电压 (release voltage) | 3 |
| Input quiescent current | IVIN_Q | 10 | 20 | mA | VIN=12V，IBAT=0A，无 LED | 3 | |
| Standby current | IBAT_standby | 20 | 30 | uA | VIN=0V，VBAT=8.4V | 3 | |
| Charge target voltage | VTRGT | 2.075 | 2.1 | 2.125 | V | 充电时 FB 引脚最高电压 (max FB pin voltage while charging) | 3 |
| Charge current, 1-cell Li-ion | ICHRG | 2.7 | 3 | 3.3 | A | 1 串锂电池，VIN=12V，RICHG=25K, RIADP=0R | 3 |
| Charge current, 2-cell Li-ion | ICHRG | 2.7 | 3 | 3.3 | A | 2 串锂电池，VIN=12V，RICHG=25K, RIADP=0R | 4 |
| Charge current, 3-cell Li-ion | ICHRG | 1.8 | 2 | 2.2 | A | 3 串锂电池，VIN=24V，RICHG=37.5K, RIADP=0R | 4 |
| Charge current, 4-cell Li-ion | ICHRG | 1.35 | 1.5 | 1.65 | A | 4 串锂电池，VIN=24V，RICHG=50K, RIADP=0R | 4 |
| Trickle charge cutoff voltage | VTRKL | 1.49 | 1.5 | 1.51 | V | 检测 FB 引脚电压 (detect FB pin voltage) | 4 |
| Recharge threshold voltage | VRCH | 2.02 | 2.05 | 2.08 | V | 检测 FB 引脚电压 (detect FB pin voltage) | 4 |
| Input undervoltage lockout threshold | VUVLO | 1.25 | 1.3 | 1.35 | V | 检测 VINSEN 电压 (detect VINSEN voltage) | 4 |
| High-side switch on-resistance | RDS(ON) | 40 | 50 | 60 | mΩ | 上管导通电阻 | 4 |
| Low-side switch on-resistance | RDS(ON) | 30 | 40 | 50 | mΩ | 下管导通电阻 | 4 |
| LED output current | ILED | 5 | 10 | mA | LED 输出电流 | 4 | |
| Switching frequency | FS | 350 | 400 | 450 | KHz | 4 | |
| Thermal shutdown temperature, rising | TOTP | 120 | 140 | 160 | ℃ | 上升温度 (rising temperature) | 4 |
| Thermal shutdown hysteresis | ΔTOTP | 30 | 40 | 50 | ℃ | 4 | |
| ESD rating, human body model (HBM) | ESD | 4 | kV | 人体模型 (HBM) | 3 | ||
| Thermal resistance, junction to ambient | θJA | 50 | ℃/W | 结温到环境 (junction to ambient) | 3 |
CAD (KiCad official)
- Symbol:
IP2365 - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm - 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
ip2365-etched.step/ip2365-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ip2365.step/ip2365.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: INJOINIC TECHNOLOGY datasheet (20 pp, sha256
d715942ff28e2d1e, retrieved 2026-10-17, 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: 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).
# IP2365
**INJOINIC TECHNOLOGY** · Others · QFN-24-EP(4x4)
IP2365 from INJOINIC TECHNOLOGY, in a QFN-24-EP(4x4). 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 | VINSEN | input | Input voltage detection pin: above 1.5V allows normal operation, below 1.3V stops charging and enters standby, and RVS1/RVS2 set the input undervoltage threshold. |
| 2 | AGND | power_in | Analog ground pin. |
| 3 | ICHG | passive | Battery-side charge current setting pin; a resistor RICHG to GND sets ICC_BAT = 75K/RICHG (about 1.0A to 3.0A for 75K to 25K), and the pin must not be left floating. |
| 4 | IADP | passive | Input-side charge current setting pin; a resistor RIADP to GND sets ICC_ADP = 75K/RIADP, and the pin must not be left floating. |
| 5 | NC | unconnected | No connection; leave floating. |
| 6 | NC | unconnected | No connection; leave floating. |
| 7 | SCL | input | I2C clock input at 5V logic level; SCL and SDA must both be high at VIN power-up or when VINSEN rises to enter I2C mode, and I2C supports up to 400 Kbps. |
| 8 | LED | output | Charge status LED output: by default it flashes at 0.5Hz while charging and stays on when full. |
| 9 | SDA | bidirectional | I2C data line at 5V logic level; it must be high at power-up to enable I2C mode. |
| 10 | NTC | passive | NTC temperature sense pin that sources 20uA into an external NTC network to GND; if NTC protection is unused it must be tied to GND through 51K and must not float. |
| 11 | AGND | power_in | Analog ground pin. |
| 12 | FB | input | Output voltage feedback pin that selects the battery cell count and full-charge voltage through the RFB1/RFB2 divider; the charge target is 2.1V at the FB pin (2.075V to 2.125V). |
| 13 | VOUT | input | Output voltage sense pin used to sample the battery-side voltage. |
| 14 | BST | passive | Bootstrap pin for the high-side gate drive; the bootstrap capacitor must be placed close to the BST and LX pins, and VBST is rated -0.3 to VLX+8 V. |
| 15 | LX | output | DC-DC switching node connected to the inductor (10uH in the reference design); absolute maximum rating is -0.3 to 32 V. |
| 16 | LX | output | DC-DC switching node connected to the inductor (10uH in the reference design); absolute maximum rating is -0.3 to 32 V. |
| 17 | PGND | power_in | Power ground pin. |
| 18 | PGND | power_in | Power ground pin. |
| 19 | VSYS | power_out | System voltage pin; a 22uF ceramic capacitor (not electrolytic) must be placed close to the VSYS and PGND pins; absolute maximum rating is -0.3 to 28 V. |
| 20 | VSYS | power_out | System voltage pin; a 22uF ceramic capacitor (not electrolytic) must be placed close to the VSYS and PGND pins; absolute maximum rating is -0.3 to 28 V. |
| 21 | VSYS | power_out | System voltage pin; a 22uF ceramic capacitor (not electrolytic) must be placed close to the VSYS and PGND pins; absolute maximum rating is -0.3 to 28 V. |
| 22 | VIN | power_in | Input voltage pin; operating input range is 5V to 26V and absolute maximum rating is -0.3 to 28 V. |
| 23 | VIN | power_in | Input voltage pin; operating input range is 5V to 26V and absolute maximum rating is -0.3 to 28 V. |
| 24 | VIN | power_in | Input voltage pin; operating input range is 5V to 26V and absolute maximum rating is -0.3 to 28 V. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | INJOINIC TECHNOLOGY |
| Package | QFN-24-EP(4x4) |
| Category | Others |
| Pins | 25 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN/VSYS/VINSEN voltage range | VIN、VSYS、VVINSEN | -0.3 | | 28 | V | | 3 |
| VOUT/FB voltage range | VVOUT、VFB | -0.3 | | 24 | V | | 3 |
| LX voltage range | VLX | -0.3 | | 32 | V | | 3 |
| BST voltage range | VBST | -0.3 | | | V | Maximum printed as VLX+8 V (expression, not a number) | 3 |
| LED/NTC/ICHG/IADP/SCL/SDA voltage range | VLED/NTC/ICHG/IADP/SCL/SDA | -0.3 | | 6 | V | | 3 |
| Junction temperature range | TJ | -40 | | 150 | ℃ | | 3 |
| Storage temperature range | Tstg | -60 | | 150 | ℃ | | 3 |
| Input voltage (recommended operating) | VIN | | 12 | 24 | V | Minimum printed as VBAT_END+0.8 (expression, not a number) | 3 |
| Input voltage | VIN | | 12 | 24 | V | Minimum printed as VBAT_END+0.8 (expression, not a number) | 3 |
| Input overvoltage threshold, trigger voltage | VIN-OV | 26 | 27 | 28 | V | 触发电压 (trigger voltage) | 3 |
| Input overvoltage threshold, release voltage | VIN-OV | 24 | 25 | 26 | V | 解除电压 (release voltage) | 3 |
| Input quiescent current | IVIN_Q | | 10 | 20 | mA | VIN=12V，IBAT=0A，无 LED | 3 |
| Standby current | IBAT_standby | | 20 | 30 | uA | VIN=0V，VBAT=8.4V | 3 |
| Charge target voltage | VTRGT | 2.075 | 2.1 | 2.125 | V | 充电时 FB 引脚最高电压 (max FB pin voltage while charging) | 3 |
| Charge current, 1-cell Li-ion | ICHRG | 2.7 | 3 | 3.3 | A | 1 串锂电池，VIN=12V，RICHG=25K, RIADP=0R | 3 |
| Charge current, 2-cell Li-ion | ICHRG | 2.7 | 3 | 3.3 | A | 2 串锂电池，VIN=12V，RICHG=25K, RIADP=0R | 4 |
| Charge current, 3-cell Li-ion | ICHRG | 1.8 | 2 | 2.2 | A | 3 串锂电池，VIN=24V，RICHG=37.5K, RIADP=0R | 4 |
| Charge current, 4-cell Li-ion | ICHRG | 1.35 | 1.5 | 1.65 | A | 4 串锂电池，VIN=24V，RICHG=50K, RIADP=0R | 4 |
| Trickle charge cutoff voltage | VTRKL | 1.49 | 1.5 | 1.51 | V | 检测 FB 引脚电压 (detect FB pin voltage) | 4 |
| Recharge threshold voltage | VRCH | 2.02 | 2.05 | 2.08 | V | 检测 FB 引脚电压 (detect FB pin voltage) | 4 |
| Input undervoltage lockout threshold | VUVLO | 1.25 | 1.3 | 1.35 | V | 检测 VINSEN 电压 (detect VINSEN voltage) | 4 |
| High-side switch on-resistance | RDS(ON) | 40 | 50 | 60 | mΩ | 上管导通电阻 | 4 |
| Low-side switch on-resistance | RDS(ON) | 30 | 40 | 50 | mΩ | 下管导通电阻 | 4 |
| LED output current | ILED | | 5 | 10 | mA | LED 输出电流 | 4 |
| Switching frequency | FS | 350 | 400 | 450 | KHz | | 4 |
| Thermal shutdown temperature, rising | TOTP | 120 | 140 | 160 | ℃ | 上升温度 (rising temperature) | 4 |
| Thermal shutdown hysteresis | ΔTOTP | 30 | 40 | 50 | ℃ | | 4 |
| ESD rating, human body model (HBM) | ESD | | 4 | | kV | 人体模型 (HBM) | 3 |
| Thermal resistance, junction to ambient | θJA | | 50 | | ℃/W | 结温到环境 (junction to ambient) | 3 |
## CAD (KiCad official)
- Symbol: `IP2365`
- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`
- 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files: `ip2365-etched.step` / `ip2365-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ip2365.step` / `ip2365.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [INJOINIC TECHNOLOGY datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893953222955008) (20 pp, sha256 `d715942ff28e2d1e`, retrieved 2026-10-17, 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:** 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](docs/ip2365-datasheet.pdf)