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LM1084IDT-ADJ

Public Made by Adom

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HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM1084IDT-ADJ

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2

LM1084IDT-ADJ from HGSEMI, in a TO-252-2. 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 ADJ/GND passive Ground/adjust pin (datasheet lists GND/ADJ, I/O G/O); on the adjustable LM1084-ADJ it is the ADJ reference pin that sets VOUT = VREF×(1+R2/R1)+IADJ×R2 with VREF 1.250 V typ.
2 VOUT power_out Regulated output voltage pin, internally connected to the metal tab, requiring at least a 22 µF tantalum output capacitor for stability; 5 A output current with 1.5 V typical dropout.
3 VIN power_in Input supply voltage pin with absolute maximum 20 V and recommended 12 V maximum.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-252-2
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
Reference voltage (ADJ), 10mA to 5A VREF 1.231 1.25 1.269 V IOUT=10mA, VIN-VOUT=3V 3
Reference voltage (ADJ), full load and line range VREF 1.225 1.25 1.275 V 10mA≤IOUT≤5A, 1.5V≤VIN-VOUT≤5V 3
Line regulation (ADJ) ΔVOUT 0.015 0.2 % IOUT=10mA, 2.85V≤VIN≤10V 4
Load regulation (ADJ) ΔVOUT 0.1 0.4 % 0mA≤IOUT≤5A, VIN-VOUT=3V 4
Dropout voltage VDROP 1.45 1.5 V IOUT=5A, ΔVREF, ΔVOUT=1% 4
Current limit ILIMIT 5.5 6.5 A VIN-VOUT=3V 4
Minimum load current (ADJ) ILOAD(MIN) 3 10 mA VIN=10V (LM1084-ADJ) 4
Quiescent current IQ 5 10 mA VIN=10V (LM1084) 4
Ripple rejection PSRR 60 72 dB fRIPPLE=120Hz, COUT=25μF 钽电容, IOUT=5A, VIN-VOUT=3V 4
Adjust pin current IADJ 55 120 μA VIN=4.25V, IOUT=10mA 4
Adjust pin current change ΔIADJ 0.2 5 μA 10mA≤IOUT≤5A, 1.5V≤(VIN-VOUT)≤4.5V 4
Lead temperature (soldering 10 s), TO-252 TLEAD 260 ℃ Soldering 10 s, TO-252 3
Input voltage (absolute maximum) VIN 20 V 3
Operating junction temperature range (absolute maximum) TJ 150 ℃ 3
Storage temperature TS -65 150 V 3
ESD capability (minimum) ESD 2000 V 3
Input voltage (recommended) VIN 12 V 3
Operating junction temperature range (recommended), TO-252 TJ -40 85 ℃ TO-252 3
Thermal resistance junction-to-ambient, TO-252-2L θJA 100 ℃/W TO-252-2L 4
Temperature stability 0.5 % IOUT=10mA, VIN-VOUT=1.5V 4
Long-term stability 0.5 % Tamb=125°C, 1000Hrs 4
RMS noise (% of VOUT) 0.003 % 10Hz≤f≤10kHz 4

CAD (KiCad official)

  • Symbol: LM1084IDT-ADJ
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2 (KiCad packages3D, STEP)
  • 3D model files: lm1084idt-adj-etched.step / lm1084idt-adj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm1084idt-adj.step / lm1084idt-adj.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (11 pp, sha256 8ced581695e85829, retrieved 2026-10-18, 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 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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