component
SX1262IMLTRT
Public Unreviewedby Ray
SEMTECH RF Transceiver ICs, QFN-24-EP(4x4). Datasheet-verified pinout, 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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README
markdownSX1262IMLTRT
SEMTECH · RF Transceiver ICs · QFN-24-EP(4x4)
SX1262IMLTRT from SEMTECH, 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 |
|---|---|---|---|
| 0 | GND | power_in | Exposed thermal/ground pad on the bottom of the QFN. Must be soldered to the PCB ground plane for electrical ground and thermal dissipation. |
| 1 | VDD_IN | power_in | Input voltage for the power amplifier regulator (feeds VR_PA). On the SX1262 this pin is connected to pin 10 (VBAT). Operating supply 1.8-3.7 V. |
| 2 | GND | power_in | Ground reference. |
| 3 | XTA | passive | Crystal oscillator connection. Can alternatively be used to inject an external reference clock (e.g. from a TCXO on DIO3). |
| 4 | XTB | passive | Second crystal oscillator connection for the reference XTAL. |
| 5 | GND | power_in | Ground reference. |
| 6 | DIO3 | bidirectional | Multi-purpose digital I/O. Can be configured via SetDIO3AsTCXOCtrl to supply/enable an external TCXO. |
| 7 | VREG | power_out | Regulated output voltage from the internal LDO or DC-DC regulator. Requires an external decoupling capacitor to ground. |
| 8 | GND | power_in | Ground reference. |
| 9 | DCC_SW | power_out | DC-DC switching-node output. Connects to the external inductor of the DC-DC buck converter when DC-DC regulation is selected. |
| 10 | VBAT | power_in | Main battery/supply input for the RFIC (1.8-3.7 V operating range). |
| 11 | VBAT_IO | power_in | Supply for the digital I/O interface pins (SPI, DIO1, DIO2, BUSY, NRESET). DIO3 is powered separately from VREG. Operating range 1.8-3.7 V. |
| 12 | DIO2 | bidirectional | Multi-purpose digital I/O. Can be configured via SetDIO2AsRfSwitchCtrl to drive an external RF antenna/PA switch. |
| 13 | DIO1 | bidirectional | Multi-purpose digital I/O, typically used as an IRQ line to the host MCU. |
| 14 | BUSY | output | Busy indicator output. Held high while the transceiver is processing a command or waking from sleep; the host must wait for BUSY to go low before issuing SPI commands. |
| 15 | NRESET | input | Active-low reset input. Pull low to reset the device; release high for normal operation. |
| 16 | MISO | output | SPI slave data output to the host MCU (Master In / Slave Out). |
| 17 | MOSI | input | SPI slave data input from the host MCU (Master Out / Slave In). |
| 18 | SCK | input | SPI clock input from the host MCU. |
| 19 | NSS | input | SPI active-low slave-select input from the host MCU. A high-to-low transition initiates an SPI transaction. |
| 20 | GND | power_in | Ground reference. |
| 21 | RFI_P | input | Positive RF receiver input. Part of the differential LNA input; ties to the external RX matching/TX-RX switch network. |
| 22 | RFI_N | input | Negative RF receiver input. Part of the differential LNA input; ties to the external RX matching/TX-RX switch network. |
| 23 | RFO | output | RF transmitter output from the internal power amplifier. On SX1262 this is the high-power PA output (up to +22 dBm) and connects to the external TX matching network and antenna switch. |
| 24 | VR_PA | power_in | Regulated power-amplifier supply. Connects to the external PA regulator decoupling network (fed from VDD_IN via the internal VR_PA regulator). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SEMTECH |
| Package | QFN-24-EP(4x4) |
| Category | RF And Wireless |
| Pins | 25 |
Ordering variants
Same part, different packaging or reel option.
SX1262IMLTRT
CAD (KiCad official)
- Symbol:
SX1262IMLTRT - 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: SEMTECH datasheet (107 pp, sha256
a0fd29d13e779c1d, retrieved 2026-08-17, tier: lcsc) - 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).