component

LT3045EMSE#TRPBF

Public Made by Adom

by adom

Analog Devices Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, MSOP-12-EP. KiCad symbol, footprint and 3D as used on Adom boards; pin functions from the manufacturer datasheet.

componentpower management (pmic)lt3045emse-trpbfboard-derived

Verified LT3045EMSE#TRPBF

by Claude, at Caleb Taylor's request · last 27 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 2 records

27 Oct 2026Claude, at Caleb Taylor's requestValidated against Analog Devices' LT3045 datasheet (Rev. D, 11/22)files match
SymbolFootprint3D modelPinsfor all variants
  • ✓Datasheet replaced: the page carried a JLCPCB copy (tier lcsc, Rev. B); now ADI's Rev. D (11/22, 32 pages) from analog.com/media/en/technical-documentation/data-sheets/lt3045.pdf, fetched 2026-10-27
  • ✓Orderable LT3045EMSE#TRPBF is the tape-and-reel 12-lead plastic MSOP (MSE), marking 3045, -40 to 125 °C (Order Information, p.2)
  • ✓All 13 pins match the MSE pin configuration (p.2) and Pin Functions (p.12-13) by number and name: IN 1/2/3, EN/UV 4, PG 5, ILIM 6, PGFB 7, SET 8, GND 9, OUTS 10, OUT 11/12, exposed pad 13 = GND ('EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB'); no renames needed
  • ✓Pin types: IN power_in, EN/UV and PGFB input, PG open_collector (open-collector flag), OUTS input (error amplifier input), OUT power_out, GND power_in; ILIM (programming pin that sources a current) and SET (error amplifier input that sources 100µA) kept passive
  • •Shared pins: pins 2/3 (IN), 12 (OUT) and 13 (GND, exposed pad) are hidden pins stacked at the same coordinates as visible pins 1, 11 and 9, and are typed passive. This is KiCad's stacked-pin convention: a hidden power_in pin would join an implicit global net named after the pin, and stacked power_out pins would conflict in ERC. The visible pin of each stack has the datasheet's type, so each net has one power_in, power_out or power_in pin
  • ✓All 13 descriptions rewritten from Pin Functions (p.12-13). The old text was copied across stacked pins: pins 2 and 3 said 'shared with pins 2 and 3' and pin 12 said 'shared with pin 12'; now every IN pin says 'pins 1, 2, 3' and every OUT pin 'pins 11, 12'. Dropped values that are not in the pin functions (1.8V to 20V range, ±22V, 1.18V, 500mA)
  • ✓Footprint vs MSE package 05-08-1666 Rev G (p.30): 12 pads at e = 0.65 mm, pin 1 top-left, 1-6 down the left, 7-12 up the right, as the p.2 top view; pads 1.45 x 0.40 at x = ±2.15 against ADI's recommended 0.889 ±0.127 x 0.42 ±0.038 (inner edges 3.20-3.45 apart, outer span 5.10 min); the KiCad pads are longer (inner edges 2.85 apart, outer span 5.75) and 0.40 wide (within 0.382-0.458), and cover the leads: tips at 4.90 ±0.152 span, foot 0.53 ±0.152, lead width 0.22-0.38
  • ✓Exposed pad 13: 1.651 x 2.845 mm at the centre, long side along the lead rows, equal to the drawing's 1.651 ±0.102 x 2.845 ±0.102 and ADI's recommended pad; copper and mask, with four 0.67 x 1.15 paste windows
  • ✓3D body 4.90 x 4.039 x 0.95 mm against lead span 4.90 ±0.152, body 4.039 ±0.102 (and 3.00 ±0.102 across), height 1.10 max (p.30); seated on z = 0, centred on the pads, pin-1 dot at the top-left corner (matching GLB)
  • ✓DigiKey 505-LT3045EMSE#TRPBFTR-ND (tape and reel; DigiKey product URL names LT3045EMSE-TRPBF) and Mouser 584-LT3045EMSE#TRPBF kept and added to specs
  • ✓Symbol and footprint Datasheet properties point at the manufacturer datasheet URL
  • ✓Symbol Datasheet / MPN / Manufacturer / DigiKey / Mouser / LCSC properties agree with page.json; footprint Datasheet property points at the manufacturer datasheet URL
  • ✓component-page-verify: all checks pass
Evidencedatasheet (Analog Devices)
Verified files✓ lt3045emse-trpbf.kicad_sym✓ lt3045emse-trpbf.kicad_mod✓ lt3045emse-trpbf.step
16 Oct 2026Claude (AI build)Automated build checks (awaiting human validation)superseded
SymbolFootprint3D modelPinsfor all variants
  • ✓Footprint extracted pad-for-pad from the source board and normalized to the footprint frame (back-side parts un-mirrored)
  • ✓3D model seated z=0 at footprint origin (placement inverse; method centroid-matched to KiCad library models on 59 cases)
  • ✓adom-lbr generate + lint passed
  • ✓13 of 13 pins described from the datasheet (adom-ds2sf, page-cited)
  • •Not yet checked by a person: land pattern vs datasheet, pin-1/orientation, 3D body vs drawing
Evidencedatasheet
Verified files! lt3045emse-trpbf.kicad_sym! lt3045emse-trpbf.kicad_mod✓ lt3045emse-trpbf.step
Spot something wrong? Report it as an issue Propose a fix Records are signed by members of adom.
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lt3045emse-trpbf / README.md
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Caleb Publish 0.1.1 8c62b67 1d ago

LT3045EMSE#TRPBF

Analog Devices · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · MSOP-12-EP

LT3045EMSE#TRPBF from Analog Devices, in a MSOP-12-EP. Symbol, footprint and 3D model are the ones used on Adom board designs (KiCad official libraries). Pin functions are extracted from the manufacturer datasheet with page references.

Pinout

Pin Name Type Function
1 IN power_in Input (pins 1, 2, 3). These pins supply power to the regulator. The LT3045 requires a bypass capacitor at the IN pin; a 4.7µF input bypass capacitor generally suffices, while large load transients may require higher input capacitance. The LT3045 withstands reverse voltages on IN with respect to GND, OUTS and OUT. [datasheet p.12]
2 IN passive Input (pins 1, 2, 3). These pins supply power to the regulator. The LT3045 requires a bypass capacitor at the IN pin; a 4.7µF input bypass capacitor generally suffices, while large load transients may require higher input capacitance. The LT3045 withstands reverse voltages on IN with respect to GND, OUTS and OUT. [datasheet p.12]
3 IN passive Input (pins 1, 2, 3). These pins supply power to the regulator. The LT3045 requires a bypass capacitor at the IN pin; a 4.7µF input bypass capacitor generally suffices, while large load transients may require higher input capacitance. The LT3045 withstands reverse voltages on IN with respect to GND, OUTS and OUT. [datasheet p.12]
4 EN/UV input Enable/UVLO. Pulling EN/UV low places the part in shutdown: quiescent current drops to less than 1µA and the output turns off. A resistor divider between IN, EN/UV and GND can set an input undervoltage lockout threshold; the part typically turns on when EN/UV exceeds 1.24V on its rising edge, with 130mV hysteresis. EN/UV can be driven above the input voltage. If unused, tie EN/UV to IN. Do not float the EN/UV pin. [datasheet p.12]
5 PG open_collector Power Good. Open-collector flag that indicates output voltage regulation; PG pulls low if PGFB is below 300mV. If the power good function is not needed, float the PG pin. Do not drive PG more than 0.3V below GND (parasitic substrate diode to GND). [datasheet p.12]
6 ILIM passive Current Limit Programming Pin. A resistor between ILIM and GND programs the current limit (scale factor nominally 150mA•kΩ); for best accuracy, Kelvin connect it directly to the GND pin. ILIM sources current proportional (1:500) to output current, so it also serves as a current monitoring pin with a 0V to 300mV range. If the programmable current limit is not needed, tie ILIM to GND. Do not drive ILIM more than 0.3V below GND. [datasheet p.12]
7 PGFB input Power Good Feedback. PG pulls high if PGFB increases beyond 300mV on its rising edge, with 7mV hysteresis on its falling edge. A resistor divider between OUT, PGFB and GND sets the power good threshold: 0.3V • (1 + RPG2/RPG1). PGFB also activates the fast start-up circuitry. Tie PGFB to IN if power good and fast start-up are not needed. Do not drive PGFB more than 0.3V below GND. [datasheet p.12]
8 SET passive Inverting input of the error amplifier and the regulation set-point. SET sources a precision 100µA current through an external resistor between SET and GND; VSET = ISET • RSET, output range zero to 15V. A capacitor from SET to GND improves noise, PSRR and transient response at the expense of start-up time. For optimum load regulation, Kelvin connect the ground side of the SET resistor directly to the load. Do not drive SET more than 0.3V below GND. [datasheet p.12]
9 GND power_in Ground. The exposed pad (pin 13) is an electrical connection to GND; tie it directly to this GND pin. [datasheet p.12]
10 OUTS input Output Sense. Non-inverting input to the error amplifier. For optimal transient performance and load regulation, Kelvin connect OUTS directly to the output capacitor and the load, and tie the GND connections of the output capacitor and the SET pin capacitor directly together. Do not drive OUTS more than 0.3V below GND. [datasheet p.13]
11 OUT power_out Output (pins 11, 12). Supplies power to the load. For stability, use a minimum 10µF output capacitor with an ESR below 20mΩ and an ESL below 2nH; large load transients require larger output capacitance. Do not drive OUT more than 0.3V below GND. [datasheet p.13]
12 OUT passive Output (pins 11, 12). Supplies power to the load. For stability, use a minimum 10µF output capacitor with an ESR below 20mΩ and an ESL below 2nH; large load transients require larger output capacitance. Do not drive OUT more than 0.3V below GND. [datasheet p.13]
13 GND passive Exposed pad, GND. The exposed backside is an electrical connection to GND; for proper electrical and thermal performance, solder it to the PCB ground and tie it directly to the GND pin (9). [datasheet p.12]

Key specifications

Parameter Value
Manufacturer Analog Devices
Package MSOP-12-EP
Category Power Management (PMIC)
Pins 13
LCSC C666577
Mouser 584-LT3045EMSE#TRPBF
DigiKey 505-LT3045EMSE#TRPBFTR-ND
Distributor summary (LCSC listing, not datasheet) -40℃+125℃@(Tj) 0.8uVrms 0V15V 1 20V 260mV@(500mA) 500mA 76dB@(1MHz) Adjustable Positive Under Voltage Lockout、PG Pin、Over Current Protection、Over Temperature Protection、Enable、Short Circuit Protection MSOP-12-EP Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

CAD

  • Symbol: lt3045emse-trpbf (source library Regulator_Linear:LT3045xMSE)
  • Footprint: Package_SO:MSOP-12-1EP_3x4.039mm_P0.65mm_EP1.651x2.845mm
  • 3D model path in footprint: ${KICAD10_3DMODEL_DIR}/Package_SO.3dshapes/MSOP-12-1EP_3x4.039mm_P0.65mm_EP1.651x2.845mm.step
  • 3D files: lt3045emse-trpbf-etched.step / lt3045emse-trpbf-etched.glb carry the MPN etch as a separate Adom.LaserEtch part; lt3045emse-trpbf.step / lt3045emse-trpbf.glb are the bare model.
  • EAGLE/Fusion library: lt3045emse-trpbf.lbr (adom-lbr)

Provenance

  • Datasheet: Analog Devices LT3045 datasheet (Rev. D, 11/22, sha256 9132e595759a58a0, retrieved 2026-10-27, tier: mfr)
  • CAD: KiCad official libraries (CC-BY-SA 4.0); footprint and symbol as used on Adom boards.
  • Pins: KiCad symbol from the source board + adom-ds2sf datasheet extraction (claude-opus-4-7).

Datasheet PDF