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TL2844BDR-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
markdownTL2844BDR-8
Texas Instruments · DC-DC Converters · SOIC-8
TL2844BDR-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 / compensation node. Loop compensation network is tied between COMP and VFB. Internally drives the current-sense comparator through a two-diode drop and 2R/R divider (approximately (V_COMP - 1.4 V)/3). |
| 2 | VFB | input | Inverting input of the internal error amplifier. Compared against the internal 2.5 V reference; typical feedback input voltage is 2.5 V with input bias current of -0.3 uA (max -1 uA on TL284xB). |
| 3 | ISENSE | input | Current-sense input to the PWM current-sense comparator. Comparator trip threshold is nominally 1 V at COMP = 5 V. Delay from ISENSE to OUTPUT is 150 ns (typ). Input voltage range 0 to 5.5 V. |
| 4 | RT/CT | passive | Oscillator timing pin. An external resistor to VREF and capacitor to GND set the oscillator frequency (up to 500 kHz). Trimmed discharge current 8.3 mA (typ) at RT/CT = 2 V. Operating range 0 to 5.5 V. |
| 5 | GND | power_in | Device ground and reference for all voltages. In the 8-pin package this pin also serves as the return for the totem-pole output stage. |
| 6 | OUTPUT | output | High-current totem-pole gate-drive output for N-channel power MOSFETs. Sources/sinks up to ~200 mA average, with rise/fall time 50 ns (typ) into 1 nF. High-level output 13.5 V typ at IOH = -20 mA; low-level 0.1 V typ at IOL = 20 mA. Held low by UVLO (V_OL = 0.7 V typ at V_CC = 5 V, sinking 10 mA). |
| 7 | VCC | power_in | Positive supply input for both logic and the output stage in the 8-pin package. TL2844B UVLO turn-on 16 V (typ), turn-off 10 V (typ). Start-up current <0.5 mA; operating supply current 11 mA (typ, 17 mA max). Absolute maximum 30 V. |
| 8 | VREF | power_out | Internally trimmed 5 V reference output. 5 V typ (4.95-5.05 V for TL2844B), capable of sourcing up to 20 mA of external load. Short-circuit current -100 mA (typ). Commonly used to bias the RT/CT network. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
TL2844BDR-8D-8TL2844BDR-8TL2844BDR-8PTL2844BDR-8D
CAD (KiCad official)
- Symbol:
TL2844BDR-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).