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LT3055IMSE#PBF
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Analog Devices Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, MSOP-16-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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LT3055IMSE#PBF
Analog Devices · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · MSOP-16-EP
LT3055IMSE#PBF from Analog Devices, in a MSOP-16-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 | IN | power_in | Supply input that withstands reverse input voltage without reverse current, and a 1µF to 10µF local bypass capacitor is recommended if the input is more than six inches from the main filter capacitor. |
| 2 | IN | power_in | Supply input, paired with pin 1, that withstands reverse input voltage without reverse current, and a 1µF to 10µF local bypass capacitor is recommended if the input is more than six inches from the main filter capacitor. |
| 3 | SHDN | input | Shutdown input that puts the device into a low-power state and turns the output off when pulled low, and it must be connected (to IN if unused) because the device does not function when it is left unconnected. |
| 4 | FAULT1 | output | Open-collector fault output that asserts low when output current drops below the minimum current threshold or the part is in thermal shutdown, sinks up to 50µA, and requires an external pull-up resistor. |
| 5 | FAULT2 | output | Open-collector fault output that asserts low when output current exceeds the current limit threshold or the part is in thermal shutdown, sinks up to 50µA, and requires an external pull-up resistor. |
| 6 | PWRGD | output | Open-collector power-good output that pulls low when the output is less than 90% of its nominal value, sinks up to 50µA, and requires an external pull-up resistor. |
| 7 | TEMP | output | Analog output of average junction temperature at 250mV for 25°C with a 10mV/°C slope and approximately 1500Ω output impedance, stable with no capacitor or 100pF to 1nF, and left unconnected if not used. |
| 8 | IMON | output | Output current monitor, the collector of a PNP mirror at 1/500th of the output current, requiring at least 22nF decoupling and tied to GND if not used. |
| 9 | IMIN | passive | Minimum output current programming pin, the collector of a PNP mirror at 1/2000th of load current, where a resistor to GND sets the fault threshold, at least 10nF decoupling is required, and it is floated if not used. |
| 10 | IMAX | passive | Precision current limit programming pin, the collector of a mirror PNP at 1/500th of the output PNP, where a resistor to GND sets the current limit, a 22nF decoupling capacitor to ground is required, and it is tied to GND if not used. |
| 11 | REF/BYP | passive | Bypass and soft-start pin for the reference, where a capacitor to GND reduces noise (10nF gives 25µVRMS) and sets soft-start time, it must not be driven by active circuitry, at least 100pF is recommended, and it is left floating if unused. |
| 12 | GND | power_in | Ground pin that must be tied directly to pins 13 and the exposed pad 17, and the bottom of the output voltage setting divider should connect here for optimum load regulation. |
| 13 | GND | power_in | Ground pin on the LT3055 adjustable part that must be tied directly to pins 12 and the exposed pad 17 (on LT3055-3.3 and LT3055-5 this pin is ADJ instead). |
| 14 | ADJ | input | Adjust pin on the LT3055 that is the error amplifier inverting input, with a typical 16nA bias current flowing out of the pin and a 600mV reference to GND, where a feedforward capacitor from ADJ to OUT improves noise and transient response above 600mV. |
| 15 | OUT | power_out | Output pin supplying the load, requiring a minimum 3.3µF ceramic capacitor with ESR below 1Ω (4.7µF for outputs below 1.2V), with a permissible output range of 600mV to 40V. |
| 16 | OUT | power_out | Output pin supplying the load, paired with pin 15, requiring a minimum 3.3µF ceramic capacitor with ESR below 1Ω (4.7µF for outputs below 1.2V), with a permissible output range of 600mV to 40V. |
| 17 | GND | power_in | Exposed pad that is an electrical and thermal connection to GND and must be soldered to the PCB ground and tied to pins 12 and 13. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-16-EP |
| Category | Power Management (PMIC) |
| Pins | 17 |
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 | 1.6 | 2.2 | V | ILOAD = 500mA | 4 | ||
| ADJ Pin Voltage | 594 | 600 | 606 | mV | LT3055: VIN = 2.2V, ILOAD = 1mA | 4 | |
| ADJ Pin Voltage | 588 | 600 | 612 | mV | 2.2V < VIN < 45V, 10mA < ILOAD < 500mA, full operating temperature range (l) | 4 | |
| Line Regulation | 0.25 | 3 | mV | LT3055: dVIN = 2.2V to 45V, ILOAD = 1mA | 4 | ||
| Load Regulation | 0.5 | 4 | mV | LT3055: VIN = 2.2V, ILOAD = 1mA to 500mA | 4 | ||
| Dropout Voltage | 140 | 175 | mV | ILOAD = 10mA | 4 | ||
| Dropout Voltage | 260 | mV | ILOAD = 10mA, full operating temperature range (l) | 4 | |||
| Dropout Voltage | 200 | 250 | mV | ILOAD = 50mA | 4 | ||
| Dropout Voltage | 370 | mV | ILOAD = 50mA, full operating temperature range (l) | 4 | |||
| Dropout Voltage | 225 | 275 | mV | ILOAD = 100mA | 4 | ||
| Dropout Voltage | 410 | mV | ILOAD = 100mA, full operating temperature range (l) | 4 | |||
| Dropout Voltage | 350 | 400 | mV | ILOAD = 500mA | 4 | ||
| Dropout Voltage | 590 | mV | ILOAD = 500mA, full operating temperature range (l) | 4 | |||
| GND Pin Current | 65 | 130 | μA | VIN = VOUT(NOMINAL) + 0.6V, ILOAD = 0mA | 4 | ||
| GND Pin Current | 100 | 200 | μA | VIN = VOUT(NOMINAL) + 0.6V, ILOAD = 1mA | 4 | ||
| GND Pin Current | 270 | 550 | μA | VIN = VOUT(NOMINAL) + 0.6V, ILOAD = 10mA | 4 | ||
| GND Pin Current | 1.8 | 4.5 | mA | VIN = VOUT(NOMINAL) + 0.6V, ILOAD = 100mA | 4 | ||
| GND Pin Current | 11 | 25 | mA | VIN = VOUT(NOMINAL) + 0.6V, ILOAD = 500mA | 4 | ||
| Quiescent Current in Shutdown | 0.2 | 1 | μA | VIN = 45V, VSHDN = 0V | 4 | ||
| ADJ Pin Bias Current | 16 | 60 | nA | VIN = 12V, full operating temperature range (l) | 4 | ||
| Shutdown Threshold (Off to On) | 0.9 | 1.3 | V | VOUT = Off to On, full operating temperature range (l) | 4 | ||
| Shutdown Threshold (On to Off) | 1.1 | 1.42 | V | VOUT = On to Off, full operating temperature range (l) | 4 | ||
| SHDN Pin Current | 0.5 | 1 | μA | VSHDN = 0V, VIN = 45V, full operating temperature range (l) | 4 | ||
| SHDN Pin Current | 3 | µA | VSHDN = 45V, VIN = 45V, full operating temperature range (l) | 4 | |||
| Ripple Rejection (LT3055, VOUT = 0.6V) | 70 | 85 | dB | VIN-VOUT = 2V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 500mA | 4 | ||
| Input Reverse Leakage Current | 300 | μA | VIN = -45V, VOUT = 0, full operating temperature range (l) | 4 | |||
| Reverse Output Current | 0 | 10 | μA | VOUT = 1.2V, VIN = 0 | 4 | ||
| Internal Current Limit | 900 | mA | VIN = 2.2V, VOUT = 0, VIMAX = 0 | 4 | |||
| Internal Current Limit | 520 | mA | VIN = 2.2V, dVOUT = -5%, full operating temperature range (l) | 4 | |||
| External Programmed Current Limit (FAULT2 Pin Threshold) | IFAULT | 180 | 200 | 220 | mA | 5.6V < VIN < 10V, VOUT = 5V, RIMAX = 1.5k, full operating temperature range (l) | 4 |
| External Programmed Current Limit (FAULT2 Pin Threshold) | IFAULT | 445 | 495 | 545 | mA | 5.6V < VIN < 7V, VOUT = 5V, RIMAX = 604Ω, full operating temperature range (l) | 4 |
| FAULT, PWRGD Pins Logic Low Voltage | 0.14 | 0.25 | V | Pull-Up Current = 50μA, full operating temperature range (l) | 5 | ||
| FAULT, PWRGD Pins Leakage Current | 0.01 | 1 | μA | VFAULT1, VFAULT2, VPWRGD = 5V | 5 | ||
| IMIN Threshold Accuracy | 0.9 | 1 | 1.1 | mA | 5.6V < VIN < 15V, VOUT = 5V, RIMIN = 1.2M, full operating temperature range (l) | 5 | |
| IMIN Threshold Accuracy | 9 | 10 | 11 | mA | 5.6V < VIN < 15V, VOUT = 5V, RIMIN = 120K, full operating temperature range (l) | 5 | |
| PWRGD Trip Point | 86 | 90 | 94 | % | % of Nominal Output Voltage, Output Rising, full operating temperature range (l) | 5 | |
| Current Monitor Ratio (IOUT/IMON) | 450 | 500 | 550 | mA/mA | ILOAD = 10mA, 250mA, 500mA, full operating temperature range (l) | 5 | |
| TEMP Error | -0.08 | 0.08 | V | full operating temperature range (l) | 5 | ||
| IN Pin Voltage | -50 | 50 | V | 2 | |||
| OUT Pin Voltage | -50 | 40 | V | 2 | |||
| Input-to-Output Differential Voltage | -40 | 50 | V | 2 | |||
| ADJ Pin Voltage | -50 | 50 | V | 2 | |||
| SENSE Pin Voltage | -50 | 50 | V | 2 | |||
| SHDN Pin Voltage | -50 | 50 | V | 2 | |||
| FAULT1, FAULT2, PWRGD Pin Voltage | -0.3 | 50 | V | 2 | |||
| IMON Pin Voltage | -0.3 | 7 | V | 2 | |||
| IMIN Pin Voltage | -0.3 | 7 | V | 2 | |||
| IMAX Pin Voltage | -0.3 | 7 | V | 2 | |||
| TEMP Pin Voltage | -0.3 | 7 | V | 2 | |||
| REF/BYP Pin Voltage | 1 | V | 2 | ||||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Operating Junction Temperature Range (I-Grade) | -40 | 125 | °C | I-grade (LT3055IMSE) | 2 | ||
| Input Voltage Range | 1.6 | 45 | V | 1 | |||
| Thermal Resistance, Junction-to-Ambient (MSE package) | θJA | 37 | °C/W | MSE package, 16-lead MSOP | 2 | ||
| Thermal Resistance, Junction-to-Case (MSE package) | θJC | 5 | 10 | °C/W | MSE package, printed as 5°C/W TO 10°C/W | 2 | |
| MSOP Measured Thermal Resistance (2500 sq mm copper, topside and backside) | 35 | °C/W | Junction-to-ambient, 2500 sq mm topside copper, 2500 sq mm backside, 2500 sq mm board area, 4-layer FR-4 | 21 | |||
| MSOP Measured Thermal Resistance (100 sq mm copper, topside) | 39 | °C/W | Junction-to-ambient, 100 sq mm topside copper, 2500 sq mm backside, 2500 sq mm board area, 4-layer FR-4 | 21 |
CAD (KiCad official)
- Symbol:
LT3055IMSE#PBF - Footprint:
Package_SO:MSOP-16-1EP_3x4.039mm_P0.5mm_EP1.651x2.845mm - 3D model: MSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
lt3055imse-pbf-etched.step/lt3055imse-pbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lt3055imse-pbf.step/lt3055imse-pbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (26 pp, sha256
9eb7948800120b95, retrieved 2026-10-20, 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).