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LP2985AIM5-2.8

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Texas Instruments Linear Voltage Regulators (LDO), SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LP2985AIM5-2.8

Texas Instruments · Linear Voltage Regulators (LDO) · SOT-23-5

LP2985AIM5-2.8 from Texas Instruments, in a SOT-23-5. 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 IN power_in Input voltage supply, operating range 2.5 V to 16 V (recommended minimum is the greater of 3.1 V or VOUT(max) plus rated maximum dropout).
2 GND power_in Common ground (device substrate).
3 ON/OFF input Logic high enable input, 0 V to VIN operating range, with less than 1 µA quiescent current when shut down.
4 BYPASS passive Bypass capacitor connection for low noise operation (a 10 nF capacitor reduces output noise to 30 µVRMS in a 30 kHz bandwidth).
5 OUT power_out Regulated output voltage (2.8 V fixed for this variant), delivering up to 150 mA.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-5
Category Power Management ICs
Pins 5

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 tolerance ΔVO -1 1 %VNOM IL = 1 mA 6
Output voltage tolerance ΔVO -1.5 1.5 %VNOM 1 mA ≤ IL ≤ 50 mA 6
Output voltage tolerance ΔVO -2.5 2.5 %VNOM 1 mA ≤ IL ≤ 50 mA, -40°C ≤ TJ ≤ 125°C 6
Output voltage tolerance ΔVO -3.5 3.5 %VNOM 1 mA ≤ IL ≤ 150 mA, -40°C ≤ TJ ≤ 125°C 6
Output voltage line regulation ΔVO/ΔVIN 0.007 0.014 %/V VO(NOM)+1 V ≤ VIN ≤ 16 V 6
Output voltage line regulation ΔVO/ΔVIN 0.032 %/V VO(NOM)+1 V ≤ VIN ≤ 16 V, -40°C ≤ TJ ≤ 125°C 6
Dropout voltage VIN-VO 1 3 mV IL = 0 mA 6
Dropout voltage VIN-VO 5 mV IL = 0 mA, -40°C ≤ TJ ≤ 125°C 6
Dropout voltage VIN-VO 7 10 mV IL = 1 mA 6
Dropout voltage VIN-VO 15 mV IL = 1 mA, -40°C ≤ TJ ≤ 125°C 6
Dropout voltage VIN-VO 40 60 mV IL = 10 mA 6
Dropout voltage VIN-VO 90 mV IL = 10 mA, -40°C ≤ TJ ≤ 125°C 6
Dropout voltage VIN-VO 120 150 mV IL = 50 mA 6
Dropout voltage VIN-VO 225 mV IL = 50 mA, -40°C ≤ TJ ≤ 125°C 6
Dropout voltage VIN-VO 280 350 mV IL = 150 mA 6
Dropout voltage VIN-VO 575 mV IL = 150 mA, -40°C ≤ TJ ≤ 125°C 6
Ground pin current IGND 65 95 µA IL = 0 mA 7
Ground pin current IGND 125 µA IL = 0 mA, -40°C ≤ TJ ≤ 125°C 7
Ground pin current IGND 75 110 µA IL = 1 mA 7
Ground pin current IGND 170 µA IL = 1 mA, -40°C ≤ TJ ≤ 125°C 7
Ground pin current IGND 120 220 µA IL = 10 mA 7
Ground pin current IGND 400 µA IL = 10 mA, -40°C ≤ TJ ≤ 125°C 7
Ground pin current IGND 350 600 µA IL = 50 mA 7
Ground pin current IGND 1000 µA IL = 50 mA, -40°C ≤ TJ ≤ 125°C 7
Ground pin current IGND 850 1500 µA IL = 150 mA 7
Ground pin current IGND 2500 µA IL = 150 mA, -40°C ≤ TJ ≤ 125°C 7
Ground pin current (shutdown) IGND 0.01 0.8 µA VON/OFF < 0.3 V 7
Ground pin current (shutdown) IGND 0.05 2 µA VON/OFF < 0.15 V, -40°C ≤ TJ ≤ 125°C 7
ON/OFF input voltage high (output on) VON/OFF 1.4 V High = O/P ON 7
ON/OFF input voltage high (output on) VON/OFF 1.6 V High = O/P ON, -40°C ≤ TJ ≤ 125°C 7
ON/OFF input voltage low (output off) VON/OFF 0.55 V Low = O/P OFF 7
ON/OFF input voltage low (output off) VON/OFF 0.15 V Low = O/P OFF, -40°C ≤ TJ ≤ 125°C 7
ON/OFF input current ION/OFF 0.01 µA VON/OFF = 0 V 7
ON/OFF input current ION/OFF -2 µA VON/OFF = 0 V, -40°C ≤ TJ ≤ 125°C 7
ON/OFF input current ION/OFF 5 µA VON/OFF = 5 V 7
ON/OFF input current ION/OFF 15 µA VON/OFF = 5 V, -40°C ≤ TJ ≤ 125°C 7
Output noise voltage (RMS) en 30 µV BW = 300 Hz to 50 kHz, COUT = 10 µF, CBYPASS = 10 nF 7
Ripple rejection ΔVO/ΔVIN 45 dB f = 1 kHz, CBYPASS = 10 nF, COUT = 10 µF 7
Short circuit current IO(SC) 400 mA RL = 0 Ω (steady state) 7
Peak output current IO(PK) 350 mA VOUT ≥ VO(NOM) -5% 7
Operating junction temperature TJ -40 125 °C 5
Input supply voltage (survival) VIN -0.3 16 V 5
Input supply voltage (operating) VIN 2.5 16 V 5
Shutdown input voltage (survival) VON/OFF -0.3 16 V 5
Output voltage (survival) VOUT -0.3 9 V 5
Input-output voltage (survival) -0.3 16 V 5
Storage temperature Tstg -65 150 °C 5
ESD HBM V(ESD) -1000 1000 V Human-body model, pins 3 and 4 5
ESD HBM V(ESD) -2000 2000 V Human-body model, pins 1, 2, and 5 5
Supply input voltage VIN 3.1 16 V Min is greater of 3.1 V or VOUT(MAX) + rated dropout voltage (max) 5
ON/OFF input voltage VON/OFF 0 V Upper limit VIN 5
Output current IOUT 150 mA 5
Operating junction temperature TJ -40 125 °C 5
Junction-to-ambient thermal resistance, High K RθJA 169 °C/W DBV (SOT-23), 5 pins 6
Junction-to-case (top) thermal resistance RθJC(top) 121.8 °C/W DBV (SOT-23), 5 pins 6
Junction-to-board thermal resistance RθJB 29.5 °C/W DBV (SOT-23), 5 pins 6
Junction-to-top characterization parameter ψJT 16.1 °C/W DBV (SOT-23), 5 pins 6
Junction-to-board characterization parameter ψJB 29 °C/W DBV (SOT-23), 5 pins 6

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 capacitor, and to the LDO ground pin as close as possible to each other, connected by a wide, component-side, copper surface. The use of vias and long traces to create LDO circuit connections is stron 22

CAD (KiCad official)

  • Symbol: LP2985AIM5-2.8
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lp2985aim5-2-8-etched.step / lp2985aim5-2-8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp2985aim5-2-8.step / lp2985aim5-2-8.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (36 pp, sha256 4204f42d0934087e, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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