component
TL2844BDR
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.
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TL2844BDR
Texas Instruments · AC-DC Controllers And Regulators · SOIC-14
TL2844BDR 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 (I/O); error amplifier output sink current is limited to 10 mA maximum. |
| 2 | NC | unconnected | No internal connection; do not connect. |
| 3 | VFB | input | Error amplifier input; recommended input voltage 0 to 5.5 V. |
| 4 | NC | unconnected | No internal connection; do not connect. |
| 5 | ISENSE | input | Current sense comparator input; recommended input voltage 0 to 5.5 V. |
| 6 | NC | unconnected | No internal connection; do not connect. |
| 7 | RT/CT | bidirectional | Oscillator RC input (I/O); recommended input voltage 0 to 5.5 V. |
| 8 | POWER GROUND | power_in | Output PWM ground terminal; recommended voltage -0.1 to 1 V (14-pin D package only). |
| 9 | GND | power_in | Device power supply ground terminal; all voltages are specified with respect to this terminal. |
| 10 | OUTPUT | output | PWM output (totem-pole, drives N-channel MOSFETs); recommended output voltage 0 to 30 V, absolute maximum output current ±1 A. |
| 11 | VC | power_in | Output PWM positive voltage supply; recommended maximum 30 V (14-pin D package only). |
| 12 | VCC | power_in | Device positive voltage supply; recommended maximum 30 V, supply current externally limited to 25 mA maximum. |
| 13 | NC | unconnected | No internal connection; do not connect. |
| 14 | VREF | power_in | Oscillator voltage reference output; recommended reference output current is -20 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Power Management (PMIC) |
| Pins | 14 |
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 | VCC | 30 | V | Low impedance source | 4 | ||
| Analog input voltage range | VI | -0.3 | 6.3 | V | VFB and ISENSE | 4 | |
| Supply current | ICC | 30 | mA | 4 | |||
| Output current | IO | -1 | 1 | A | 4 | ||
| Error amplifier output sink current | IO(sink) | 10 | mA | 4 | |||
| Output energy | 5 | μJ | Capacitive load | 4 | |||
| Virtual junction temperature | TJ | 150 | °C | 4 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 4 | ||
| Supply voltage | VCC | 30 | V | 4 | |||
| Supply voltage VC | VC | 30 | V | 14-pin D package only | 4 | ||
| Input voltage RT/CT | VI | 0 | 5.5 | V | RT/CT | 4 | |
| Input voltage VFB and ISENSE | VI | 0 | 5.5 | V | VFB and ISENSE | 4 | |
| Output voltage | VO | 0 | 30 | V | OUTPUT | 4 | |
| Power ground voltage | -0.1 | 1 | V | 14-pin D package only | 4 | ||
| Supply current, externally limited | ICC | 25 | mA | 4 | |||
| Average output current | IO | 200 | mA | 4 | |||
| Reference output current | IO(ref) | -20 | mA | 4 | |||
| Oscillator frequency | fosc | 100 | 500 | kHz | 4 | ||
| Operating free-air temperature TL284xB | TJ | -40 | 85 | °C | TL284xB | 4 | |
| Junction-to-ambient thermal resistance | RθJA | 87.9 | °C/W | D (14 pins) | 5 | ||
| Output voltage | 4.95 | 5 | 5.05 | V | IO = 1 mA, TJ = 25°C | 5 | |
| Line regulation | 6 | 20 | mV | VCC = 12 V to 25 V | 5 | ||
| Load regulation | 6 | 25 | mV | IO = 1 mA to 20 mA | 5 | ||
| Average temperature coefficient of output voltage | 0.2 | 0.4 | mV/°C | 5 | |||
| Output voltage, worst-case variation | 4.9 | 5.1 | V | VCC = 12 V to 25 V, IO = 1 mA to 20 mA | 5 | ||
| Short-circuit output current | -30 | -100 | -180 | mA | 5 | ||
| Initial accuracy | 47 | 52 | 57 | kHz | TJ = 25°C | 5 | |
| Initial accuracy | 44 | 60 | kHz | TA = Tlow to Thigh | 5 | ||
| Initial accuracy | 225 | 250 | 275 | kHz | TJ = 25°C, RT = 6.2 kΩ, CT = 1 nF | 5 | |
| Voltage stability | 0.2 | 1 | % | VCC = 12 V to 25 V | 5 | ||
| Temperature stability | 5 | % | 5 | ||||
| Discharge current | 7.8 | 8.3 | 8.8 | mA | TJ = 25°C, RT/CT = 2 V | 5 | |
| Discharge current | 7.5 | 8.8 | mA | RT/CT = 2 V | 5 | ||
| Feedback input voltage | VFB | 2.45 | 2.5 | 2.55 | V | COMP = 2.5 V | 6 |
| Input bias current | -0.3 | -1 | μA | 6 | |||
| Open-loop voltage amplification | AVOL | 65 | 90 | dB | VO = 2 V to 4 V | 6 | |
| Gain-bandwidth product | 0.7 | 1 | MHz | 6 | |||
| Supply-voltage rejection ratio | 60 | 70 | dB | VCC = 12 V to 25 V | 6 | ||
| Output sink current | 2 | 6 | mA | VFB = 2.7 V, COMP = 1.1 V | 6 | ||
| Output source current | -0.5 | -0.8 | mA | VFB = 2.3 V, COMP = 5 V | 6 | ||
| High-level output voltage | 5 | 6 | V | VFB = 2.3 V, RL = 15 kΩ to GND | 6 | ||
| Low-level output voltage | 0.7 | 1.1 | V | VFB = 2.7 V, RL = 15 kΩ to GND | 6 | ||
| Voltage amplification | 2.85 | 3 | 3.15 | V/V | Measured between ISENSE and COMP, input 0 V to 0.8 V | 6 | |
| Current-sense comparator threshold | 0.9 | 1 | 1.1 | V | COMP = 5 V | 6 | |
| High-level output voltage | VOH | 13 | 13.5 | V | IOH = -20 mA | 7 | |
| High-level output voltage | VOH | 12 | 13.5 | V | IOH = -200 mA | 7 | |
| Low-level output voltage | VOL | 0.1 | 0.4 | V | IOL = 20 mA | 7 | |
| Low-level output voltage | VOL | 1.5 | 2.2 | V | IOL = 200 mA | 7 | |
| Rise time | 25 | 150 | ns | CL = 1 nF, TJ = 25°C | 7 | ||
| Fall time | 25 | 150 | ns | CL = 1 nF, TJ = 25°C | 7 | ||
| UVLO saturation | 0.7 | 1.2 | V | VCC = 5 V, IOL = 1 mA | 7 | ||
| Start threshold voltage TLx844B | 15 | 16 | 17 | V | TLx844B | 7 | |
| Minimum operating voltage after start-up TLx844B | 9 | 10 | 11 | V | TLx844B | 7 | |
| Maximum duty cycle TLx844B | 46 | 48 | 50 | % | TLx844B | 7 | |
| Minimum duty cycle | 0 | % | 7 | ||||
| Start-up current | 0.3 | 0.5 | mA | 7 | |||
| Operating supply current | ICC | 11 | 17 | mA | VFB and ISENSE at 0 V | 7 | |
| Limiting voltage | 30 | 39 | V | ICC = 25 mA | 7 |
CAD (KiCad official)
- Symbol:
TL2844BDR - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
tl2844bdr-etched.step/tl2844bdr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl2844bdr.step/tl2844bdr.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 2026-11-06, tier: manufacturer) - 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).
# TL2844BDR
**Texas Instruments** · AC-DC Controllers And Regulators · SOIC-14
TL2844BDR 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 (I/O); error amplifier output sink current is limited to 10 mA maximum. |
| 2 | NC | unconnected | No internal connection; do not connect. |
| 3 | VFB | input | Error amplifier input; recommended input voltage 0 to 5.5 V. |
| 4 | NC | unconnected | No internal connection; do not connect. |
| 5 | ISENSE | input | Current sense comparator input; recommended input voltage 0 to 5.5 V. |
| 6 | NC | unconnected | No internal connection; do not connect. |
| 7 | RT/CT | bidirectional | Oscillator RC input (I/O); recommended input voltage 0 to 5.5 V. |
| 8 | POWER GROUND | power_in | Output PWM ground terminal; recommended voltage -0.1 to 1 V (14-pin D package only). |
| 9 | GND | power_in | Device power supply ground terminal; all voltages are specified with respect to this terminal. |
| 10 | OUTPUT | output | PWM output (totem-pole, drives N-channel MOSFETs); recommended output voltage 0 to 30 V, absolute maximum output current ±1 A. |
| 11 | VC | power_in | Output PWM positive voltage supply; recommended maximum 30 V (14-pin D package only). |
| 12 | VCC | power_in | Device positive voltage supply; recommended maximum 30 V, supply current externally limited to 25 mA maximum. |
| 13 | NC | unconnected | No internal connection; do not connect. |
| 14 | VREF | power_in | Oscillator voltage reference output; recommended reference output current is -20 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Power Management (PMIC) |
| Pins | 14 |
## 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 | VCC | | | 30 | V | Low impedance source | 4 |
| Analog input voltage range | VI | -0.3 | | 6.3 | V | VFB and ISENSE | 4 |
| Supply current | ICC | | | 30 | mA | | 4 |
| Output current | IO | -1 | | 1 | A | | 4 |
| Error amplifier output sink current | IO(sink) | | | 10 | mA | | 4 |
| Output energy | | | | 5 | μJ | Capacitive load | 4 |
| Virtual junction temperature | TJ | | | 150 | °C | | 4 |
| Storage temperature range | Tstg | -65 | | 150 | °C | | 4 |
| Supply voltage | VCC | | | 30 | V | | 4 |
| Supply voltage VC | VC | | | 30 | V | 14-pin D package only | 4 |
| Input voltage RT/CT | VI | 0 | | 5.5 | V | RT/CT | 4 |
| Input voltage VFB and ISENSE | VI | 0 | | 5.5 | V | VFB and ISENSE | 4 |
| Output voltage | VO | 0 | | 30 | V | OUTPUT | 4 |
| Power ground voltage | | -0.1 | | 1 | V | 14-pin D package only | 4 |
| Supply current, externally limited | ICC | | | 25 | mA | | 4 |
| Average output current | IO | | | 200 | mA | | 4 |
| Reference output current | IO(ref) | | | -20 | mA | | 4 |
| Oscillator frequency | fosc | 100 | | 500 | kHz | | 4 |
| Operating free-air temperature TL284xB | TJ | -40 | | 85 | °C | TL284xB | 4 |
| Junction-to-ambient thermal resistance | RθJA | | 87.9 | | °C/W | D (14 pins) | 5 |
| Output voltage | | 4.95 | 5 | 5.05 | V | IO = 1 mA, TJ = 25°C | 5 |
| Line regulation | | | 6 | 20 | mV | VCC = 12 V to 25 V | 5 |
| Load regulation | | | 6 | 25 | mV | IO = 1 mA to 20 mA | 5 |
| Average temperature coefficient of output voltage | | | 0.2 | 0.4 | mV/°C | | 5 |
| Output voltage, worst-case variation | | 4.9 | | 5.1 | V | VCC = 12 V to 25 V, IO = 1 mA to 20 mA | 5 |
| Short-circuit output current | | -30 | -100 | -180 | mA | | 5 |
| Initial accuracy | | 47 | 52 | 57 | kHz | TJ = 25°C | 5 |
| Initial accuracy | | 44 | | 60 | kHz | TA = Tlow to Thigh | 5 |
| Initial accuracy | | 225 | 250 | 275 | kHz | TJ = 25°C, RT = 6.2 kΩ, CT = 1 nF | 5 |
| Voltage stability | | | 0.2 | 1 | % | VCC = 12 V to 25 V | 5 |
| Temperature stability | | | | 5 | % | | 5 |
| Discharge current | | 7.8 | 8.3 | 8.8 | mA | TJ = 25°C, RT/CT = 2 V | 5 |
| Discharge current | | 7.5 | | 8.8 | mA | RT/CT = 2 V | 5 |
| Feedback input voltage | VFB | 2.45 | 2.5 | 2.55 | V | COMP = 2.5 V | 6 |
| Input bias current | | | -0.3 | -1 | μA | | 6 |
| Open-loop voltage amplification | AVOL | 65 | 90 | | dB | VO = 2 V to 4 V | 6 |
| Gain-bandwidth product | | 0.7 | 1 | | MHz | | 6 |
| Supply-voltage rejection ratio | | 60 | 70 | | dB | VCC = 12 V to 25 V | 6 |
| Output sink current | | 2 | 6 | | mA | VFB = 2.7 V, COMP = 1.1 V | 6 |
| Output source current | | -0.5 | -0.8 | | mA | VFB = 2.3 V, COMP = 5 V | 6 |
| High-level output voltage | | 5 | 6 | | V | VFB = 2.3 V, RL = 15 kΩ to GND | 6 |
| Low-level output voltage | | | 0.7 | 1.1 | V | VFB = 2.7 V, RL = 15 kΩ to GND | 6 |
| Voltage amplification | | 2.85 | 3 | 3.15 | V/V | Measured between ISENSE and COMP, input 0 V to 0.8 V | 6 |
| Current-sense comparator threshold | | 0.9 | 1 | 1.1 | V | COMP = 5 V | 6 |
| High-level output voltage | VOH | 13 | 13.5 | | V | IOH = -20 mA | 7 |
| High-level output voltage | VOH | 12 | 13.5 | | V | IOH = -200 mA | 7 |
| Low-level output voltage | VOL | | 0.1 | 0.4 | V | IOL = 20 mA | 7 |
| Low-level output voltage | VOL | | 1.5 | 2.2 | V | IOL = 200 mA | 7 |
| Rise time | | | 25 | 150 | ns | CL = 1 nF, TJ = 25°C | 7 |
| Fall time | | | 25 | 150 | ns | CL = 1 nF, TJ = 25°C | 7 |
| UVLO saturation | | | 0.7 | 1.2 | V | VCC = 5 V, IOL = 1 mA | 7 |
| Start threshold voltage TLx844B | | 15 | 16 | 17 | V | TLx844B | 7 |
| Minimum operating voltage after start-up TLx844B | | 9 | 10 | 11 | V | TLx844B | 7 |
| Maximum duty cycle TLx844B | | 46 | 48 | 50 | % | TLx844B | 7 |
| Minimum duty cycle | | 0 | | | % | | 7 |
| Start-up current | | | 0.3 | 0.5 | mA | | 7 |
| Operating supply current | ICC | | 11 | 17 | mA | VFB and ISENSE at 0 V | 7 |
| Limiting voltage | | 30 | 39 | | V | ICC = 25 mA | 7 |
## CAD (KiCad official)
- Symbol: `TL2844BDR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `tl2844bdr-etched.step` / `tl2844bdr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tl2844bdr.step` / `tl2844bdr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tl2844b.pdf) (31 pp, sha256 `42e42dc7a6e780d9`, retrieved 2026-11-06, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/tl2844bdr-datasheet.pdf)