component
TL3844BDR-8
Public Unreviewedby Ray
Texas Instruments DC-DC Converters, SOIC-8. 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
markdownTL3844BDR-8
Texas Instruments · DC-DC Converters · SOIC-8
TL3844BDR-8 from Texas Instruments, in a SOIC-8. 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 | COMP | output | Error amplifier output. Available for loop compensation via an external RC network to the FB pin. |
| 2 | FB | input | Inverting input of the error amplifier. Normally connected to the switching-power-supply output through a resistor divider; reference is 2.5 V. |
| 3 | ISENSE | input | Current-sense input. A voltage proportional to inductor/switch current is applied here; the PWM latch is reset when this input reaches 1 V, providing cycle-by-cycle current limiting. |
| 4 | RT/CT | passive | Oscillator timing pin. An external resistor to VREF and capacitor to GND set the oscillator frequency and maximum duty cycle. |
| 5 | GND | power_in | Device ground reference for control logic and signal returns. |
| 6 | OUT | output | High-current totem-pole output that directly drives the gate of a power MOSFET. Capable of sourcing/sinking 1 A peak. |
| 7 | VCC | power_in | Positive supply for control logic and output driver. UVLO thresholds: TL3844B turns on at 16 V and off at 10 V. Absolute maximum 30 V. |
| 8 | VREF | power_out | 5 V ±1% reference output capable of sourcing up to 50 mA. Bypass to GND with a ceramic capacitor for stability. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
TL3844BDR-8TL3844BDR-8DTL3844BDR-8P
CAD (KiCad official)
- Symbol:
TL3844BDR-8 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
804a10c86a6d4bdb, retrieved 2026-08-17, tier: manufacturer) - 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).