component
LM2951D-5.0
Public Made by Adomby adom
HTC Korea TAEJIN Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOP-8. 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
markdownLM2951D-5.0
HTC Korea TAEJIN Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOP-8
LM2951D-5.0 from HTC Korea TAEJIN 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 | Output | power_out | Regulated output of the LM2951D, which is guaranteed to supply 100 mA and is protected by current and thermal limiting, and the datasheet recommends 1 µF for stability. |
| 2 | Sense | input | Output sense input, which the datasheet's 8-pin test condition ties to the output (VOUT = XX V) for regulation measurements. |
| 3 | Shutdown | input | Logic-compatible shutdown input where the regulator is on when VSHUTDOWN is 0.8 V or lower and off when VSHUTDOWN is 2 V or higher, with an absolute maximum of -1.5 to +30 V. |
| 4 | Ground | power_in | Ground reference pin for the regulator. |
| 5 | Error | output | Error comparator output that warns of output dropout, going low when the output falls about 5% below nominal (7.5% guaranteed), with an absolute maximum of -0.3 to +30 V. |
| 6 | Tap | passive | Internal resistor divider tap at the -XX V output voltage, to which the Feedback pin is tied for fixed-voltage operation. |
| 7 | Feedback | input | Error amplifier feedback input, tied to the Tap for fixed-voltage versions or driven from an external divider for programmable output from 1.24 V to 29 V, with an absolute maximum of -0.3 to +30 V. |
| 8 | Input | power_in | Unregulated input supply, rated -0.3 to +30 V absolute maximum, which must be at least 2.3 V over temperature at very low programmed output voltages. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN Tech |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage (25℃ row, multiplier of nominal V0) | V0 | 0.985 | 1.015 | /V0/ | TJ=25℃ (Ta=25℃ header), IL=100㎂ (row mapping inferred, see review) | 3 | |
| Output Voltage (full operating temperature, multiplier of nominal V0) | V0 | 0.976 | 1.024 | /V0/ | -25℃ ≤ TJ ≤ 85℃, Full Operating Temperature (row mapping inferred) | 3 | |
| Output Voltage (multiplier of nominal V0) | V0 | 0.98 | 1.02 | /V0/ | 100㎂ ≤ IL ≤ 100㎃, TJ ≤ TJMAX (row mapping inferred) | 3 | |
| Reference Voltage | VREF | 1.21 | 1.235 | 1.26 | V | 8-pin versions only | 4 |
| Reference Voltage Over Temperature | VREF | 1.185 | 1.285 | V | Note 7: Vref ≤ Vout ≤ (Vin-1V), 2.3V ≤ Vin ≤ 30V, 100uA ≤ IL ≤ 100mA, TJ ≤ TJMAX | 4 | |
| Feedback Pin Bias Current | IFB | 20 | 40 | nA | 8-pin versions only | 4 | |
| Reference Voltage Temperature Coefficient | 20 | 50 | ppm/℃ | Note 8: worst case voltage change divided by total temperature range | 4 | ||
| Feedback Pin Bias Current Temperature Coefficient | 0.1 | nA/℃ | 4 | ||||
| Dropout Voltage at 100mA | VDROP | 380 | 450 | ㎷ | IL=100㎃ (Note 4: output drops 100㎷ below nominal measured at 1V differential) | 3 | |
| Input Logic Voltage Low (Regulator ON) | VS | 0.7 | V | Shutdown input, low (Regulator ON) | 3 | ||
| Input Logic Voltage High (Regulator OFF) | VS | 2 | V | Shutdown input, high (Regulator OFF) | 3 | ||
| Input Supply Voltage (absolute maximum) | VIN | -0.3 | 30 | V | 2 | ||
| Feedback Input Voltage (absolute maximum) | VFB | -1.5 | 30 | V | 2 | ||
| Shutdown Input Voltage (absolute maximum) | VSHUTDOWN | -0.3 | 30 | V | 2 | ||
| Error Comparator Output (absolute maximum) | -0.3 | 30 | V | 2 | |||
| Operating Junction Temperature Range | TJ | -55 | 150 | ℃ | 2 | ||
| Storage Temperature Range | TSTG | -65 | 150 | ℃ | 2 | ||
| Lead Temperature (Soldering) | 260 | ℃ | 5 seconds, soldering | 2 |
CAD (KiCad official)
- Symbol:
LM2951D-5.0 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
lm2951d-5-0-etched.step/lm2951d-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2951d-5-0.step/lm2951d-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTC Korea TAEJIN Tech datasheet (4 pp, sha256
9ad6b6821316b8ff, retrieved 2026-10-19, 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).