component
TL3843BDR
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, SOIC-14. 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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README
markdownTL3843BDR
Texas Instruments · AC-DC Controllers And Regulators · SOIC-14
TL3843BDR from Texas Instruments, in a SOIC-14. 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 | COMP | bidirectional | Error amplifier compensation pin for frequency and gain adjustment. |
| 2 | NC | unconnected | No internal connection. |
| 3 | VFB | input | Error amplifier input for feedback voltage control loop (0-5.5V). |
| 4 | NC | unconnected | No internal connection. |
| 5 | ISENSE | input | Current sense comparator input for load current monitoring (0-5.5V). |
| 6 | NC | unconnected | No internal connection. |
| 7 | RT/CT | bidirectional | Oscillator timing capacitor pin for frequency setting via RC network (0-5.5V). |
| 8 | POWER GROUND | power_in | Output PWM ground terminal for the output stage. |
| 9 | GND | power_in | Device control logic ground terminal. |
| 10 | OUTPUT | output | PWM output stage for driving N-channel MOSFETs up to ±1A peak (0-30V). |
| 11 | VC | power_in | Output PWM stage positive supply voltage (0-30V). |
| 12 | VCC | power_in | Device control logic positive supply voltage (0-30V). |
| 13 | NC | unconnected | No internal connection. |
| 14 | VREF | power_in | Oscillator reference voltage output at 5V nominal. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Power Management (PMIC) |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
TL3843BDR - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
tl3843bdr-etched.step/tl3843bdr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl3843bdr.step/tl3843bdr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (31 pp, sha256
42e42dc7a6e780d9, retrieved 2026-10-03, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).