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LT3481EMSE#TRPBF
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
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LT3481EMSE#TRPBF
Analog Devices · DC-DC Converters · MSOP-10-EP
LT3481EMSE#TRPBF 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 internal boost Schottky diode, and the BD pin voltage is rated to a 30V maximum. |
| 2 | BOOST | input | This pin provides a drive voltage higher than the input voltage to the internal NPN power switch, with a BOOST pin voltage maximum of 56V and a maximum of 30V above the SW pin. |
| 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 internal regulator and power switch and must be locally bypassed, with a VIN maximum of 36V and a 3.6V to 34V operating range. |
| 5 | RUN/SS | input | Tying this pin to ground shuts down the regulator, tying it to 2.3V or more enables normal operation, and it sets the soft-start ramp, with a RUN/SS voltage maximum of 36V. |
| 6 | PG | output | This pin is the open-collector power good output that stays low until FB is within 10% of the final regulation voltage, with a PG voltage maximum of 30V. |
| 7 | BIAS | power_in | This pin supplies current to the internal regulator and should be tied to the lowest available source above 3V (typically VOUT), with a BIAS voltage maximum of 30V. |
| 8 | FB | input | This pin is regulated to the 1.265V feedback reference and connects to the feedback resistor divider tap, with a FB voltage maximum of 5V. |
| 9 | VC | passive | This pin is the output of the internal error amplifier that sets peak switch current, uses an RC network to ground for loop compensation, and has a 2V internal clamp voltage. |
| 10 | RT | input | This oscillator resistor input sets the switching frequency when a resistor is connected from this pin to ground, with an RT voltage maximum of 5V. |
| 11 | GND | power_in | This exposed pad is ground and must be soldered to the PCB and connected to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-10-EP |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Feedback Voltage (row 1) | 1.25 | 1.265 | 1.29 | V | ● (full operating temperature range); row 1 of two printed rows | 3 | |
| Feedback Voltage (row 2) | 1.24 | 1.265 | 1.3 | V | ● (full operating temperature range); row 2 of two printed rows | 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 | |
| Switch Current Limit | 3.2 | 3.8 | 4.4 | A | Duty Cycle = 5% | 3 | |
| Minimum Input Voltage | 3 | 3.6 | V | ● (full operating temperature range) | 3 | ||
| Minimum Bias Voltage | 2.7 | 3 | V | 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; ● | 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; ● | 3 | ||
| FB Pin Bias Current | 30 | 100 | nA | VFB = 1.25V, VC = 0.4V; ● | 3 | ||
| FB Voltage Line Regulation | 0.002 | 0.02 | %/V | 4V < VIN < 34V | 3 | ||
| Minimum Switch Off-Time | 130 | 200 | nS | ● | 3 | ||
| Boost Schottky Reverse Leakage | 0.02 | 2 | μA | VSW = 10V, VBIAS = 0V | 3 | ||
| Minimum Boost Voltage | 1.5 | 2.1 | V | (Note 4); ● | 3 | ||
| BOOST Pin Current | 18 | 35 | mA | ISW = 1A | 3 | ||
| RUN/SS Pin Current | 5 | 10 | μA | VRUN/SS = 2.5V | 3 | ||
| PG Leakage | 0.1 | 1 | μA | VPG = 5V | 3 | ||
| PG Sink Current | 100 | 600 | μA | VPG = 3V; ● | 3 | ||
| Operating Temperature Range (LT3481E) | TA | -40 | 85 | °C | LT3481E grade (MSE package) | 2 | |
| Input Voltage Operating Range | VIN | 3.6 | 34 | V | Operating range as stated in Features; 36V maximum | 1 | |
| BOOST Pin Above SW Pin | VBOOST-VSW | 30 | V | 2 | |||
| FB, RT, VC Voltage | 5 | V | 2 | ||||
| BIAS, PG, BD Voltage | 30 | V | 2 | ||||
| Maximum Junction Temperature (LT3481E) | TJ | 125 | °C | LT3481E, LT3481I | 2 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 2 | ||
| Lead Temperature (Soldering) | 300 | °C | 10 sec soldering; MSE only | 2 | |||
| Thermal Resistance Junction-to-Ambient (MSE) | θJA | 40 | °C/W | MSE (10-lead MSOP) package | 2 |
CAD (KiCad official)
- Symbol:
LT3481EMSE#TRPBF - Footprint:
Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm - 3D model: MSOP-10-EP (KiCad packages3D, STEP)
- 3D model files:
lt3481emse-trpbf-etched.step/lt3481emse-trpbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lt3481emse-trpbf.step/lt3481emse-trpbf.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 2026-10-18, tier: lcsc) - 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).