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LD29150DT33R

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STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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LD29150DT33R

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

LD29150DT33R from STMicroelectronics, in a TO-252-2(DPAK). 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 VI power_in Supply input voltage with typical operating range 4.3 V to 8.8 V and absolute maximum rating of 30 V (automatic shutdown above 14 V).
2 GND power_in Ground return and die substrate connection.
3 VO power_out Regulated output voltage of 3.3 V nominal (3.267 V to 3.333 V, ±1% at 25°C) with maximum output current 1.5 A and typical dropout voltage 0.4 V.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-252-2(DPAK)
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
DC input voltage VI 30 V Above 14 V the device is automatically in shut-down (note 1) 6
DC output voltage VO -0.3 20 V Absolute maximum 6
Inhibit input voltage VINH -0.3 20 V Absolute maximum 6
Storage temperature range TSTG -55 150 °C Absolute maximum 6
Operating junction temperature range TOP -40 125 °C Operating junction temperature range 6
Output voltage (3.3 V version) VO 3.267 3.3 3.333 V IO = 10 mA to 1.5 A, VI = 4.3 to 8.8 V, TJ = -40 to 125 °C (as printed; see review) 9
Output voltage (3.3 V version), wide limit VO 3.234 3.366 V IO = 10 mA to 1.5 A, VI = 4.3 to 8.8 V, TJ = -40 to 125 °C 9
Load regulation VO 0.2 1 % IO = 10 mA to 1.5 A 9
Line regulation VO 0.06 0.5 % VI = 4.3 to 13 V 9
Supply voltage rejection SVR 52 67 dB f = 120 Hz, VI = 5.31 V, IO = 0.75 A (Note 1) 9
Dropout voltage at 0.75 A VDROP 0.2 V IO = 0.75 A, TJ = -40 to 125 °C (Note 2) 9
Dropout voltage at 1.5 A VDROP 0.4 0.7 V IO = 1.5 A, TJ = -40 to 125 °C (Note 2) 9
Dropout voltage at 250 mA VDROP 0.1 V IO = 250 mA, TJ = -40 to 125 °C (Note 2) 9
Quiescent current at 0.75 A Iq 15 40 mA IO = 0.75 A, TJ = -40 to 125 °C 9
Quiescent current at 1.5 A Iq 30 80 mA IO = 1.5 A, TJ = -40 to 125 °C 9
Quiescent current in shutdown Iq 130 180 µA VI = 13 V, VINH = GND, TJ = -40 to 125 °C 9
Short circuit current Isc 2.2 A VI - VO = 5.5 V 9
Control input logic low VIL 0.8 V OFF MODE, TJ = -40 to 125 °C (Note 3) 9
Control input logic high VIH 2 V ON MODE, TJ = -40 to 125 °C (Note 3) 9
Control input current IINH 5 10 µA TJ = -40 to 125 °C, VINH = 13 V 9
Output noise voltage eN 132 µVRMS BP = 10 Hz to 100 kHz, IO = 100 mA (Note 1) 9
Thermal shutdown TSHDN 150 °C Thermal shutdown 9
Thermal resistance junction-ambient (DPAK) RthJA 100 °C/W Junction-ambient, DPAK 6
Thermal resistance junction-case (DPAK) RthJC 8 °C/W Junction-case, DPAK 6

CAD (KiCad official)

  • Symbol: LD29150DT33R
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
  • 3D model files: ld29150dt33r-etched.step / ld29150dt33r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ld29150dt33r.step / ld29150dt33r.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (23 pp, sha256 ad7a2db22d2dee75, retrieved 2026-10-22, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF