IP2736U_EF

@@ -0,0 +1,61 @@+# IP2736U_EF++**INJOINIC** · USB PD · QFN-24-EP(4x4)++IP2736U_EF 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 | VCC | power_out | Internal LDO power output rail. Requires a 2.2uF external bypass capacitor to GND. |+| 2 | CMPV | passive | Optocoupler feedback loop voltage compensation node. Connects to the RC compensation network for the voltage loop. |+| 3 | CMPI/SDA | bidirectional | Muxed pin: optocoupler feedback loop current compensation node, or I2C bus data (SDA). Function depends on selected control mode. |+| 4 | SCL | bidirectional | I2C bus clock. Can be reconfigured as general-purpose I/O GPIO3. |+| 5 | FB | output | Feedback loop drive output. Drives the external optocoupler / PWM controller feedback network for regulating output voltage. |+| 6 | GPIO1 | bidirectional | General-purpose I/O 1. Configurable as ADC input. |+| 7 | GPIO0 | bidirectional | General-purpose I/O 0. Configurable as ADC input. |+| 8 | NC | unconnected | No connection. Leave floating. |+| 9 | NC | unconnected | No connection. Leave floating. |+| 10 | CSN | input | Low-side current-sense negative input. Connects to the ground-side terminal of the current-sense resistor (typically ~5 mOhm). |+| 11 | CSP | input | Low-side current-sense positive input. Connects to the high-side terminal of the current-sense resistor for output current measurement. |+| 12 | GPIO11 | bidirectional | General-purpose I/O 11. |+| 13 | GPIO10 | bidirectional | General-purpose I/O 10. |+| 14 | CC2 | bidirectional | USB Type-C Configuration Channel 2. Used for Type-C cable orientation, attach detection, and PD BMC communication. 20V high-voltage tolerant. |+| 15 | DP | bidirectional | USB D+ data line. Used for BC1.2/QC/AFC/FCP/SCP protocol handshakes. Configurable as UART_TX, UART_RX, or GPIO. 20V high-voltage tolerant. |+| 16 | DM | bidirectional | USB D- data line. Used for BC1.2/QC/AFC/FCP/SCP protocol handshakes. Configurable as UART_TX, UART_RX, or GPIO. 20V high-voltage tolerant. |+| 17 | CC1 | bidirectional | USB Type-C Configuration Channel 1. Used for Type-C cable orientation, attach detection, and PD BMC communication. 20V high-voltage tolerant. |+| 18 | GND | power_in | Ground reference for the IC. |+| 19 | NTC | input | Temperature ADC input for NTC thermistor (recommended 10kOhm, B=3380K). Configurable internal pull-up current source; can be reused as general-purpose I/O. |+| 20 | VOUT2 | input | Power-path 2 output voltage detection pin. Senses the output rail on the second power path. |+| 21 | VOUT2G | output | Power-path 2 external NMOS gate driver. Controls the second power-path pass NMOS (Vds >= 30V recommended). |+| 22 | VOUT1 | input | Power-path 1 output voltage detection pin. Senses the output rail on the first power path. |+| 23 | VOUT1G | output | Power-path 1 external NMOS gate driver. Controls the first power-path pass NMOS (Vds >= 30V recommended). |+| 24 | VIN | power_in | Main chip power input from the adapter/converter output (typically 3.3V-5V from LDO for EPR28V modes, or from VBUS via drop). |+| 25 | EPAD | power_in | Exposed thermal pad on package bottom. Must be soldered to the PCB ground plane for electrical ground and thermal dissipation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | INJOINIC |+| Package | QFN-24-EP(4x4) |+| Category | Power Management (PMIC) |+| Pins | 25 |++## CAD (KiCad official)++- Symbol: `IP2736U_EF`+- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm`+- 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [INJOINIC datasheet](docs/ip2736u-ef-datasheet.pdf) (20 pp, sha256 `96dad82baf2d1887`, 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](docs/ip2736u-ef-datasheet.pdf)

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