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LM7924L-TA3-T

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UTC(Unisonic Tech) Linear Voltage Regulators (LDO), TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM7924L-TA3-T

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

LM7924L-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 GND power_in Ground (G) terminal of the TO-220 package, serving as the common reference for the regulator; the datasheet gives no separate electrical limit for this pin.
2 INPUT power_in Unregulated negative input (I) terminal; the series absolute maximum input voltage is VIN = -35 V and the LM7924 is tested at VIN = -33 V.
3 OUTPUT power_out Regulated negative output (O) terminal delivering VOUT = -24 V typical (-22.80 V to -25.20 V over 5 mA to 1 A load with PD ≦ 15 W) at up to 1 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
Input Voltage VIN -35 V 3
Output Current IOUT 1 A 3
Operating Temperature TOPR -40 85 C 3
Storage Temperature TSTG -65 150 C 3
Output Voltage VOUT -23.04 -24 -24.96 V TJ=25C 7
Output Voltage VOUT -22.8 -25.2 V VIN=-27V~-38V, IOUT=5mA~1A, PD≦15W 7
Dropout Voltage VD 2 V IOUT=1.0A TJ=25C 7
Line Regulation VOUT 15 480 mV VIN=-27V~-38V TJ=25C 7
Line Regulation VOUT 8 240 mV VIN=-30V~-36V TJ=25C 7
Load Regulation VOUT 15 480 mV IOUT=5mA~1A TJ=25C 7
Load Regulation VOUT 5 240 mV IOUT=250mA~750mA TJ=25C 7
Quiescent Current IQ 3 6 mA TJ=25C 7
Quiescent Current Change IQ 0.05 0.5 mA IOUT=5mA~1A 7
Quiescent Current Change IQ 0.1 1 mA VIN =-27V~-38V 7
Ripple Rejection RR 54 60 dB VIN =-28V~-38V, f=120Hz 7
Output Noise Voltage eN 400 μV f=10Hz~100kHz TA=25C 7
Output Voltage Drift VOUT/T -1 mV/C IOUT=5mA 7
Peak Current IPEAK 2.2 A TJ=25C 7
Junction to Ambient Thermal Resistance θJA 65 C/W 3
Junction to Case Thermal Resistance θJC 5 C/W 3

CAD (KiCad official)

  • Symbol: LM7924L-TA3-T
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: lm7924l-ta3-t-etched.step / lm7924l-ta3-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm7924l-ta3-t.step / lm7924l-ta3-t.glb are the bare package body.

Provenance

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

  • Datasheet: UTC(Unisonic Tech) datasheet (8 pp, sha256 17f19f120b37a1b8, retrieved 2026-10-27, 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