component
LT3481EMSE#PBF
Public Made by Adomby adom
Analog Devices DC-DC Converters, MSOP-10-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 10d ago |
| viewers | 10d ago |
| lt3481emse-pbf-etched.glb | 10d ago |
| lt3481emse-pbf-etched.step | 10d ago |
| lt3481emse-pbf-hero.glb | 10d ago |
| lt3481emse-pbf-hero.overlay.json | 10d ago |
| lt3481emse-pbf.glb | 10d ago |
| lt3481emse-pbf.kicad_mod | 10d ago |
| lt3481emse-pbf.kicad_sym | 10d ago |
| lt3481emse-pbf.lbr | 10d ago |
| lt3481emse-pbf.step | 10d ago |
| package.json | 10d ago |
| page.json | 10d ago |
| README.md | 10d ago |
LT3481EMSE#PBF
Analog Devices · DC-DC Converters · MSOP-10-EP
LT3481EMSE#PBF from Analog Devices, in a MSOP-10-EP. 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 | BD | passive | This pin connects to the anode of the boost Schottky diode. |
| 2 | BOOST | power_in | This pin provides a drive voltage, higher than the input voltage, to the internal bipolar NPN power switch. |
| 3 | SW | output | This pin is the output of the internal power switch and connects to the inductor, catch diode and boost capacitor. |
| 4 | VIN | power_in | This pin supplies current to the LT3481's internal regulator and internal power switch and must be locally bypassed. |
| 5 | RUN/SS | input | Tie this pin to ground to shut down the LT3481, tie it to 2.3V or more for normal operation, and tie it to VIN if shutdown is not used; it also sets the soft-start ramp. |
| 6 | PG | output | This pin is the open-collector output of an internal comparator that remains low until FB is within 10% of the final regulation voltage, and is valid when VIN is above 3.5V and RUN/SS is high. |
| 7 | BIAS | power_in | This pin supplies current to the internal regulator and should be tied to the lowest available voltage source above 3V (typically VOUT). |
| 8 | FB | input | The LT3481 regulates this pin to 1.265V, and the feedback resistor divider tap connects here. |
| 9 | VC | passive | This pin is the output of the internal error amplifier that controls peak switch current and requires an RC network to ground for loop compensation. |
| 10 | RT | input | This oscillator resistor input sets the switching frequency through a resistor connected to ground. |
| 11 | GND | power_in | The exposed pad is ground and must be soldered to the PCB. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-10-EP |
| Category | Power Management ICs |
| Pins | 11 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Minimum Input Voltage | 3 | 3.6 | V | ● full operating temperature range | 3 | ||
| Quiescent Current from VIN | 0.01 | 0.5 | μA | VRUN/SS = 0.2V | 3 | ||
| Quiescent Current from VIN | 22 | 60 | μA | VBIAS = 3V, Not Switching ● full temperature range | 3 | ||
| Quiescent Current from VIN | 75 | 120 | μA | VBIAS = 0, Not Switching | 3 | ||
| Quiescent Current from BIAS | 0.01 | 0.5 | μA | VRUN/SS = 0.2V | 3 | ||
| Quiescent Current from BIAS | 50 | 120 | μA | VBIAS = 3V, Not Switching ● full temperature range | 3 | ||
| Quiescent Current from BIAS | 0 | 5 | μA | VBIAS = 0, Not Switching | 3 | ||
| Minimum Bias Voltage | 2.7 | 3 | V | 3 | |||
| Feedback Voltage | 1.25 | 1.265 | 1.29 | V | ● full operating temperature range | 3 | |
| Feedback Voltage | 1.24 | 1.265 | 1.3 | V | ● full operating temperature range | 3 | |
| FB Pin Bias Current | 30 | 100 | nA | VFB = 1.25V, VC = 0.4V ● full operating temperature range; Note 3 | 3 | ||
| FB Voltage Line Regulation | 0.002 | 0.02 | %/V | 4V < VIN < 34V | 3 | ||
| Switching Frequency | 2.5 | 2.8 | 3.1 | MHz | RT = 8.66k | 3 | |
| Switching Frequency | 1.25 | 1.4 | 1.55 | MHz | RT = 29.4k | 3 | |
| Switching Frequency | 250 | 300 | 350 | kHz | RT = 187k | 3 | |
| Minimum Switch Off-Time | 130 | 200 | nS | ● full operating temperature range | 3 | ||
| Switch Current Limit | 3.2 | 3.8 | 4.4 | A | Duty Cycle = 5% | 3 | |
| Switch VCESAT | 360 | mV | ISW = 2A | 3 | |||
| Boost Schottky Reverse Leakage | 0.02 | 2 | μA | VSW = 10V, VBIAS = 0V | 3 | ||
| Minimum Boost Voltage | 1.5 | 2.1 | V | ● full operating temperature range; Note 4 | 3 | ||
| BOOST Pin Current | 18 | 35 | mA | ISW = 1A | 3 | ||
| RUN/SS Pin Current | 5 | 10 | μA | VRUN/SS = 2.5V | 3 | ||
| RUN/SS Input Voltage High | 2.5 | V | 3 | ||||
| RUN/SS Input Voltage Low | 0.2 | V | 3 | ||||
| PG Threshold Offset from Feedback Voltage | 122 | mV | VFB Rising | 3 | |||
| PG Hysteresis | 5 | mV | 3 | ||||
| PG Leakage | 0.1 | 1 | μA | VPG = 5V | 3 | ||
| PG Sink Current | 100 | 600 | μA | VPG = 3V ● full operating temperature range | 3 | ||
| BOOST Pin Above SW Pin | 30 | V | 2 | ||||
| FB, RT, VC Voltage | 5 | V | 2 | ||||
| BIAS, PG, BD Voltage | 30 | V | 2 | ||||
| Maximum Junction Temperature | 125 | °C | LT3481E, LT3481I | 2 | |||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Lead Temperature (Soldering, 10 sec) | 300 | °C | MSE only | 2 | |||
| Operating Temperature Range | -40 | 85 | °C | LT3481E | 2 | ||
| Input Voltage Operating Range | VIN | 3.6 | 34 | V | Wide input range (36V maximum) | 1 | |
| Output Voltage Range | VOUT | 1.265 | 20 | V | 1 | ||
| Maximum Output Current | 2 | A | 1 | ||||
| Junction-to-Ambient Thermal Resistance | θJA | 40 | °C/W | MSE package | 2 |
CAD (KiCad official)
- Symbol:
LT3481EMSE#PBF - Footprint:
Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm - 3D model: MSOP-10-EP (KiCad packages3D, STEP)
- 3D model files:
lt3481emse-pbf-etched.step/lt3481emse-pbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lt3481emse-pbf.step/lt3481emse-pbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (24 pp, sha256
10dc0fc8e1493dbf, retrieved 2026-10-29, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).