component
LTC3621IMS8E#TRPBF
Public Made by Adomby adom
Analog Devices DC-DC Converters, MSOP-8-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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| README.md | 11d ago |
LTC3621IMS8E#TRPBF
Analog Devices · DC-DC Converters · MSOP-8-EP
LTC3621IMS8E#TRPBF from Analog Devices, in a MSOP-8-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 | SW | output | Switch node connection to the inductor of the step-down regulator. |
| 2 | VIN | power_in | Input voltage of the step-down regulator. |
| 3 | RUN | input | Logic-controlled RUN input that must not be left floating, with logic high activating the step-down regulator. |
| 4 | PGOOD | output | VOUT within regulation indicator output. |
| 5 | FB | input | Feedback input to the error amplifier, where a resistor divider tap connects for adjustable output or which connects directly to VOUT for fixed VOUT options. |
| 6 | INTVCC | power_out | Low dropout regulator output that must be bypassed with at least 1µF to ground. |
| 7 | MODE/SYNC | input | Selects Burst Mode operation with a 400mA peak current clamp when tied to INTVCC, pulse-skipping when tied to GND, or forced continuous mode at a voltage between 1V and VINTVCC - 1.2V, and syncs to an external clock when driven by one. |
| 8 | SGND | power_in | Signal ground pin, present on the MSOP package only. |
| 9 | GND | power_in | Ground backplane for power and signal ground that must be soldered to PCB ground as the exposed pad. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-8-EP |
| Category | Power Management ICs |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Voltage | VIN | 2.7 | 17 | V | 4 | ||
| Regulated Feedback Voltage | VFB | 0.594 | 0.6 | 0.606 | V | LTC3621/LTC3621-2, junction temperature range (l), E/I-grade | 4 |
| Reference Voltage Line Regulation | ΔVLINE(REG) | 0.01 | 0.015 | %/V | VIN = 2.7V to 17V (Note 5) | 4 | |
| RUN Input High Threshold | VRUN | 1 | V | 4 | |||
| RUN Input Low Threshold | VRUN | 0.3 | V | 4 | |||
| Peak Current Limit (E/I-Grade) | ILIM | 1.44 | 1.6 | 1.76 | A | E/I-Grade, junction temperature range (l) | 4 |
| VINTVCC Undervoltage Lockout | VUVLO | 2.4 | 2.6 | 2.7 | V | VIN Ramping Up | 4 |
| VIN Overvoltage Lockout Rising | VOVLO | 18 | 19 | 20 | V | junction temperature range (l) | 4 |
| Oscillator Frequency (E/I-Grade) | fOSC | 0.92 | 1 | 1.08 | MHz | LTC3621/LTC3621-3.3/LTC3621-5 (E/I-Grade), junction temperature range (l) | 5 |
| SYNC Capture Range | fSYNC | 60 | 140 | % | 5 | ||
| Power Good Range | ΔVPGOOD | -12.5 | 12.5 | % | 5 | ||
| Power Good Resistance | RPGOOD | 275 | 350 | Ω | PGOOD RDS(ON) at 500µA | 5 | |
| Input Voltage Absolute Maximum | VIN | -0.3 | 17 | V | 2 | ||
| RUN Voltage Absolute Maximum | RUN | -0.3 | V | VIN to -0.3V | 2 | ||
| MODE/SYNC, FB Voltages Absolute Maximum | MODE/SYNC, FB | -0.3 | 6 | V | 2 | ||
| PGOOD Voltages Absolute Maximum | PGOOD | -0.3 | 6 | V | 2 | ||
| Operating Junction Temperature Range (E/I) | TJ | -40 | 125 | °C | LTC3621E, LTC3621I | 2 | |
| Storage Temperature Range | TSTG | -65 | 150 | °C | 2 | ||
| Maximum Junction Temperature | TJMAX | 150 | °C | MS8E package | 2 | ||
| Junction-to-Ambient Thermal Resistance | θJA | 40 | °C/W | MS8E package | 2 | ||
| Junction-to-Case Thermal Resistance | θJC | 10 | °C/W | MS8E package | 2 |
CAD (KiCad official)
- Symbol:
LTC3621IMS8E#TRPBF - Footprint:
Package_SO:MSOP-8-1EP_3x3mm_P0.65mm_EP1.5x1.8mm - 3D model: MSOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
ltc3621ims8e-trpbf-etched.step/ltc3621ims8e-trpbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ltc3621ims8e-trpbf.step/ltc3621ims8e-trpbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (20 pp, sha256
82b884bf58700a7a, retrieved 2026-10-28, 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).