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LT1931AIS5#TRMPBF

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Analog Devices DC-DC Converters, TSOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower supply chiplt1931ais5#trmpbffactory-2.0.0extractor-text

Verified LT1931AIS5#TRMPBF

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 5 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LT1931AIS5#TRMPBF · TSOT-23-5 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 12-page datasheet
  • ✓distributor: lcsc C579931, digikey 505-LT1931AIS5#TRMPBFTR-ND, mouser 584-LT1931AIS5TRMPBF
  • ✓family: TSOT-23-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-zb52lq19/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height within the datasheet's package drawing (datasheet p.11)
  • ✓pads: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lt1931ais5-trmpbf.kicad_sym✓ lt1931ais5-trmpbf.kicad_mod✓ lt1931ais5-trmpbf.step
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Ray Publish 0.1.0 7b21200 3h ago

LT1931AIS5#TRMPBF

Analog Devices · DC-DC Converters · TSOT-23-5

LT1931AIS5#TRMPBF from Analog Devices, in a TSOT-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 SW output Switch pin: connect the inductor and catch diode here, and minimize the trace area at this pin to keep EMI down.
2 GND power_in Ground pin: tie directly to the local ground plane.
3 NFB input Feedback pin with a reference voltage of -1.255V: connect the resistive divider tap here and minimize trace area, since the NFB bias current flows out of the pin.
4 SHDN input Shutdown pin: tie to 2.4V or more to enable the device and ground it to shut down.
5 VIN power_in Input supply pin, which must be locally bypassed; the datasheet rates the operating voltage from 2.6V minimum to 16V maximum.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package TSOT-23-5
Category Power Supply Chip
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
Feedback Voltage -1.275 -1.255 -1.235 V 2
Feedback Voltage (over temperature) -1.28 -1.23 V ● over full operating temperature range 2
NFB Pin Bias Current 8 16 µA VNFB = -1.255V; ● over full operating temperature range 2
Quiescent Current 5.8 8 mA VSHDN = 2.4V, Not Switching 2
Quiescent Current in Shutdown 0.01 1 µA VSHDN = 0V, VIN = 3V 2
Reference Line Regulation 0.01 0.05 %/V 2.6V ≤ VIN ≤ 16V 2
Switching Frequency 1.8 2.2 2.6 MHz 2
Switching Frequency (over temperature) 1.6 2.9 MHz ● over full operating temperature range 2
Maximum Duty Cycle 75 82 % ● over full operating temperature range 2
Switch Current Limit 1 1.2 2.5 A (Note 3) 2
Switch VCESAT 400 600 mV ISW = 1A 2
Switch Leakage Current 0.01 1 µA VSW = 5V 2
SHDN Input Voltage, High 2.4 V 2
SHDN Input Voltage, Low 0.5 V 2
SHDN Pin Bias Current 35 70 µA VSHDN = 3V 2
SHDN Pin Bias Current 0 0.1 µA VSHDN = 0V 2
Maximum Operating Voltage 16 V 2
VIN Voltage (absolute maximum) VIN 16 V 2
SW Voltage SW -0.4 36 V 2
NFB Voltage NFB -2 V 2
Current Into NFB Pin -1 1 mA 2
SHDN Voltage SHDN 16 V 2
Maximum Junction Temperature TJ 125 °C 2
Operating Temperature Range TA -40 85 °C LT1931AI guaranteed over this range (Note 2) 2
Storage Temperature Range TSTG -65 150 °C 2
Lead Temperature (Soldering) 300 °C 10 sec soldering 2
Thermal Resistance, Junction to Ambient θJA 150 °C/W TJMAX = 125°C 2

CAD (KiCad official)

  • Symbol: LT1931AIS5#TRMPBF
  • Footprint: Package_TO_SOT_SMD:TSOT-23-5
  • 3D model: TSOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lt1931ais5-trmpbf-etched.step / lt1931ais5-trmpbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lt1931ais5-trmpbf.step / lt1931ais5-trmpbf.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (12 pp, sha256 86f1f10ba5e475b2, 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