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Contents

README

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LM7805AL-TA3-T

UTC(Unisonic Tech) · Linear Voltage Regulators (LDO) · TO-220

LM7805AL-TA3-T from UTC(Unisonic Tech), in a TO-220. 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 I power_in Input pin: the datasheet gives an absolute maximum input voltage of 35 V for VOUT=5 to 18 V (40 V for VOUT=24 V).
2 G power_in Ground (GND) pin, the common reference for the regulator; quiescent current IQ is specified at 8.0 mA maximum with TJ=25°C and IOUT≤1.0 A.
3 O power_out Regulated output pin: the fixed output is 5.0 V (typ) for the LM7805A, with output current up to 1.5 A.

Key specifications

Parameter Value
Manufacturer UTC(Unisonic Tech)
Package TO-220
Category Power Management ICs
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
Output Voltage VOUT 4.8 5 5.2 V TJ =25°C, IOUT=5mA ~ 1.0A 3
Output Voltage VOUT 4.75 5.25 V VIN =7.5V ~ 20V, IOUT=5mA ~ 1.0A, PD≤15W 3
Dropout Voltage VD 2 V TJ =25°C 3
Load Regulation VOUT 100 mV TJ =25°C, IOUT=5mA ~ 1.5A 3
Load Regulation VOUT 50 mV TJ =25°C, IOUT=0.25A ~ 0.75A 3
Line regulation VOUT 50 mV VIN =7V ~ 25V, TJ =25°C 3
Quiescent Current IQ 8 mA TJ =25°C, IOUT≤1.0A 3
Quiescent Current Change IQ 1 mA VIN =7.5V ~ 20V 3
Quiescent Current Change IQ 0.5 mA IOUT=5mA ~ 1.0A 3
Ripple Rejection RR 62 80 dB VIN =8V ~ 18V, f=120Hz, TJ =25°C 3
Output Noise Voltage eN 40 μV 10Hz≤f≤100kHz 3
Temperature Coefficient of Vo Vo/T -0.6 mV/°C IOUT=5mA 3
Peak Output Current IPEAK 1.8 A TJ =25°C 3
Input voltage VIN 35 V VOUT=5~18V 3
Output Current IOUT 1.5 A 3
Operating Junction Temperature TOPR -20 125 °C 3
Storage Temperature TSTG -55 150 °C 3
Junction to Ambient θJA 65 °C/W 3
Junction to Case TO-220 θJC 5 °C/W TO-220 package 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper Note 1: The Maximum steady state usable output current are dependent on input voltage, heat sinking, lead length of the package and copper pattern of PCB. The data above represents pulse test conditio 7

CAD (KiCad official)

  • Symbol: LM7805AL-TA3-T
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: lm7805al-ta3-t-etched.step / lm7805al-ta3-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm7805al-ta3-t.step / lm7805al-ta3-t.glb are the bare package body.

Provenance

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

  • Datasheet: UTC(Unisonic Tech) datasheet (9 pp, sha256 1be0940f7075b22b, retrieved 2026-10-30, 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