component
LS1240AG-SO8-R
Public Made by Adomby adom
UTC Unisonic Tech Gate Drivers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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LS1240AG-SO8-R
UTC Unisonic Tech · Gate Drivers · SOP-8
LS1240AG-SO8-R from UTC Unisonic Tech, in a SOP-8. 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 | LINE | passive | Connecting pin to the B-wire of the telephone line. |
| 2 | GND | power_in | Ground. |
| 3 | Csw | passive | Sweep rate control capacitor; the datasheet specifies the sweep frequency test condition as C1=100nF with R1=14k. |
| 4 | Ra | passive | Output frequency control resistor; the datasheet gives a programming resistor range of 8 to 56 k. |
| 5 | OUT | output | Buzzer output that drives a piezo-ceramic converter directly or, with a decoupling capacitor, a dynamic loudspeaker. |
| 6 | NULL | unconnected | Not connected. |
| 7 | Cr | passive | Rectifier capacitor for the integrated rectifier bridge. |
| 8 | LINE | passive | Connecting pin to the A-wire of the telephone line. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | SOP-8 |
| Category | Motor Driver ICs |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VS | 26 | V | 4 | |||
| Current Consumption without load | IB | 1.5 | 1.8 | mA | VS=9.3 to 25V | 4 | |
| Activation Voltage | VON | 12 | 13.5 | V | 4 | ||
| Sustaining Voltage | VOFF | 7.8 | 9.3 | V | 4 | ||
| Differential Resistance in OFF Condition | RD | 6.4 | k | 4 | |||
| Short Circuit Current | IOUT | 70 | mA | VS=20V, RL=250 | 4 | ||
| Output Frequency 1 | fOUT1 | 1.55 | 2.53 | kHz | Vs=26V,R1=14k; V3=0V | 4 | |
| Output Frequency 2 | fOUT2 | 1.08 | 1.9 | kHz | Vs=26V,R1=14k; V3=6V | 4 | |
| Fout1/Fout2 ratio | Fout1/Fout2 | 1.33 | 1.43 | Vs=26V,R1=14k | 4 | ||
| Programming Resistor Range | 8 | 56 | k | 4 | |||
| Sweep Frequency | 5.25 | 7.5 | 9.75 | Hz | C1=100nF,R1=14k | 4 | |
| Calling Voltage (f=50Hz) Continuous | VAB | 120 | VRMS | f=50Hz | 4 | ||
| Calling Voltage (f=50Hz) (5s ON/10s OFF) | VAB | 200 | VRMS | f=50Hz, 5s ON/10s OFF | 4 | ||
| Supply Current | IDC | 30 | mA | 4 | |||
| Operating Temperature | TOPR | -40 | 70 | C | 4 | ||
| Storage Temperature | TSTG | -65 | 150 | C | 4 | ||
| Junction to Ambient (SOP-8) | JA | 150 | ℃/W | SOP-8 | 4 |
CAD (KiCad official)
- Symbol:
LS1240AG-SO8-R - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ls1240ag-so8-r-etched.step/ls1240ag-so8-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ls1240ag-so8-r.step/ls1240ag-so8-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC Unisonic Tech datasheet (5 pp, sha256
0d53d49022ed729a, retrieved 2026-10-18, 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).