component

UA78L05AIPK

Public Made by Adom

by adom

Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ua78l05aipkfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs ua78l05aipk: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers ua78l05aipk: viewers · Ray 1mo ago
package.json ua78l05aipk: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json ua78l05aipk: specified limits as data (metadata.characteristics, 37 rows from the datasheet) · Ray 26d ago
README.md ua78l05aipk: specified limits as data (metadata.characteristics, 37 rows from the datasheet) · Ray 26d ago
ua78l05aipk-etched.fit.json ua78l05aipk: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ua78l05aipk-etched.glb ua78l05aipk: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ua78l05aipk-etched.step ua78l05aipk: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ua78l05aipk.glb Publish 0.1.0 · Ray 1mo ago
ua78l05aipk.kicad_mod Publish 0.1.0 · Ray 1mo ago
ua78l05aipk.kicad_sym Publish 0.1.0 · Ray 1mo ago
ua78l05aipk.lbr Publish 0.1.0 · Ray 1mo ago
ua78l05aipk.step Publish 0.1.0 · Ray 1mo ago

UA78L05AIPK

Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

UA78L05AIPK from Texas Instruments, in a SOT-89-3. 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 OUTPUT power_out Regulated voltage output pin with 0.1 µF bypass capacitor recommended between output and ground.
2 COMMON power_in Ground reference pin.
3 INPUT power_in Input pin accepting 7 V to 20 V supply with 0.33 µF bypass capacitor recommended between input and ground.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-89-3
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input voltage (new chip, UA78L05AI) VI 45 V Absolute maximum; new chip, UA78L05AI listed 4
Junction temperature TJ 150 °C Absolute maximum 4
Storage temperature Tstg -65 150 °C 4
Input voltage VI 7 20 V UA78L05C and UA78L05AC row (both legacy and new chip); AI not named in this row 4
Output current IO 100 mA 4
Operating junction temperature TJ -40 125 °C UA78L05AI (legacy chip and new chip) 4
Output voltage VO 4.8 5 5.2 V VI = 7 V to 20 V, IO = 1 mA to 40 mA, TJ = 25°C (legacy chip, UA78L05AC/AI) 6
Output voltage VO 4.75 5.25 V VI = 7 V to 20 V, IO = 1 mA to 40 mA, TJ = full range (legacy chip, UA78L05AC/AI) 6
Output voltage VO 4.95 5 5.15 V VI = 7 V to 20 V, IO = 1 mA to 40 mA, TJ = 25°C (new chip, UA78L05AC/AI) 6
Output voltage VO 4.85 5.15 V VI = 7 V to 20 V, IO = 1 mA to 40 mA, TJ = full range (new chip, UA78L05AC/AI) 6
Output voltage VO 4.8 5.14 V IO = 1 mA to 70 mA, TJ = full range (new chip, UA78L05AC/AI) 6
Input voltage regulation 32 150 mV VI = 7 V to 20 V, TJ = 25°C (legacy chip, UA78L05AC/AI) 6
Input voltage regulation 26 100 mV VI = 8 V to 20 V, TJ = 25°C (legacy chip, UA78L05AC/AI) 6
Input voltage regulation 32 33 mV VI = 7 V to 20 V, TJ = 25°C (new chip, UA78L05AC/AI) 6
Input voltage regulation 26 28 mV VI = 8 V to 20 V, TJ = 25°C (new chip, UA78L05AC/AI) 6
Ripple rejection 41 49 dB VI = 8 V to 18 V, f = 120 Hz, TJ = 25°C (legacy chip, UA78L05AC/AI) 6
Ripple rejection 48 55 dB VI = 8 V to 18 V, f = 120 Hz, TJ = 25°C (new chip, UA78L05AC/AI) 6
Output voltage regulation 15 60 mV IO = 1 mA to 100 mA, TJ = 25°C (legacy chip, UA78L05AC/AI) 6
Output voltage regulation 8 30 mV IO = 1 mA to 40 mA, TJ = 25°C (legacy chip, UA78L05AC/AI) 6
Output voltage regulation 15 35 mV IO = 1 mA to 100 mA, TJ = 25°C (new chip, UA78L05AC/AI) 6
Output voltage regulation 8 15 mV IO = 1 mA to 40 mA, TJ = 25°C (new chip, UA78L05AC/AI) 6
Bias current 3.8 6 mA TJ = 25°C (legacy chip, UA78L05AC/AI) 7
Bias current 5.5 mA TJ = 125°C (legacy chip, UA78L05AC/AI) 7
Bias current 3.53 3.95 mA TJ = 25°C (new chip, UA78L05AC/AI) 7
Bias current 4 mA TJ = 125°C (new chip, UA78L05AC/AI) 7
Bias current change 1.5 mA VI = 8 V to 20 V, TJ = full range (legacy chip, UA78L05AC/AI) 7
Bias current change 0.485 mA VI = 8 V to 20 V, TJ = full range (new chip, UA78L05AC/AI) 7
Bias current change 0.01 mA IO = 1 mA to 40 mA, TJ = full range (new chip, UA78L05AC/AI) 7
Output noise voltage 42 µV f = 10 Hz to 100 kHz, TJ = 25°C (legacy chip, UA78L05AC/AI) 6
Output noise voltage 125 µV f = 10 Hz to 100 kHz, TJ = 25°C (new chip, UA78L05AC/AI) 6
Dropout voltage 1.7 V TJ = 25°C (legacy chip, UA78L05AC/AI) 6
Junction-to-ambient thermal resistance RθJA 54.7 °C/W PK (SOT-89, 3 pin) package 5
Junction-to-case (top) thermal resistance RθJC(top) 88.1 °C/W PK (SOT-89, 3 pin) package 5
Junction-to-board thermal resistance RθJB 9.6 °C/W PK (SOT-89, 3 pin) package 5
Junction-to-top characterization parameter ψJT 6.2 °C/W PK (SOT-89, 3 pin) package 5
Junction-to-board characterization parameter ψJB 9.7 °C/W PK (SOT-89, 3 pin) package 5
Junction-to-case (bottom) thermal resistance RθJC(bot) 7.7 °C/W PK (SOT-89, 3 pin) package 5

CAD (KiCad official)

  • Symbol: UA78L05AIPK
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: ua78l05aipk-etched.step / ua78l05aipk-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ua78l05aipk.step / ua78l05aipk.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (47 pp, sha256 223d628010f1d8e3, retrieved 2026-09-22, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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