component
LT3502EMS#TRPBF
Public Made by Adomby adom
Analog Devices DC-DC Converters, MSOP-10. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLT3502EMS#TRPBF
Analog Devices · DC-DC Converters · MSOP-10
LT3502EMS#TRPBF from Analog Devices, in a MSOP-10. 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 | SW is the output of the internal power switch and connects to the inductor, catch diode and boost capacitor. |
| 2 | BOOST | passive | BOOST supplies a drive voltage higher than the input to the internal NPN power switch, with a boost capacitor connected from this pin to SW. |
| 3 | NC | unconnected | No internal connection. |
| 4 | DA | input | DA is the catch diode D1 anode connection and provides frequency foldback in extreme situations. |
| 5 | GND | power_in | Ground pin for the regulator. |
| 6 | SHDN | input | SHDN puts the part in shutdown when tied to ground, needs 2V or more for normal operation, must not exceed VIN, and provides soft-start and frequency foldback through R3 and C4. |
| 7 | FB | input | FB regulates to 0.8V; the output is set by VOUT = 0.8 (1 + R1/R2) with a recommended R2 of 10k. |
| 8 | BD | power_in | BD supplies current to the internal boost Schottky diode. |
| 9 | NC | unconnected | No internal connection. |
| 10 | VIN | power_in | VIN supplies current to the internal regulator and internal power switch and must be locally bypassed. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-10 |
| Category | Power Management ICs |
| Pins | 10 |
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 (MS10, full temperature range) | 0.78 | 0.8 | 0.816 | V | MS10 package, l = full operating temperature range | 3 | |
| Undervoltage Lockout | 2.6 | 2.8 | 3 | V | 3 | ||
| Quiescent Current at Shutdown | 0.5 | 2 | µA | VSHDN = 0V | 3 | ||
| Quiescent Current Not Switching | 1.5 | 2 | mA | 3 | |||
| Reference Voltage Line Regulation | 0.005 | %/V | 3 | ||||
| FB Pin Bias Current | 15 | 50 | nA | l = full operating temperature range; Note 5 (current flows out of pin) | 3 | ||
| Switching Frequency (LT3502) | 0.9 | 1.1 | 1.3 | MHz | IDA < 500mA (LT3502), l | 3 | |
| Switching Frequency (LT3502) | 0.8 | 1.1 | 1.4 | MHz | IDA < 500mA (LT3502), l | 3 | |
| Maximum Duty Cycle (LT3502) | 80 | 90 | % | 100mA Load (LT3502) | 3 | ||
| Switch VCESAT | VCESAT | 450 | mV | ISW = 500mA | 3 | ||
| Switch Current Limit | 0.75 | 0.9 | 1.1 | A | Note 3 | 3 | |
| Switch Active Current | 95 | 130 | µA | SW = 10V (Note 4) | 3 | ||
| Switch Active Current | 8 | 30 | µA | SW = 0V (Note 5) | 3 | ||
| BOOST Pin Current | 10 | 13 | mA | ISW = 500mA | 3 | ||
| Minimum BOOST Voltage Above Switch | 1.9 | 2.2 | V | ISW = 500mA | 3 | ||
| BOOST Schottky Forward Drop | 0.8 | 1 | V | IOUT = 100mA | 3 | ||
| DA Pin Current to Stop OSC | 500 | 650 | mA | 3 | |||
| SHDN Bias Current | 55 | 80 | µA | VSHDN = 5V | 3 | ||
| SHDN Bias Current | 1 | µA | VSHDN = 0V | 3 | |||
| SHDN Input Voltage High | 2 | V | 3 | ||||
| SHDN Input Voltage Low | 0.3 | V | 3 | ||||
| Input Voltage (VIN) | VIN | 40 | V | 2 | |||
| BOOST Voltage | 50 | V | 2 | ||||
| BOOST Pin Above SW Pin | 7 | V | 2 | ||||
| FB Voltage | 6 | V | 2 | ||||
| SHDN Voltage | 40 | V | 2 | ||||
| BD Voltage | 7 | V | 2 | ||||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Operating Junction Temperature Range | -40 | 125 | °C | LT3502E, Note 2 | 2 | ||
| Input Voltage Range | VIN | 3 | 40 | V | wide input voltage range | 1 | |
| Thermal Resistance Junction to Ambient (MS package) | θJA | 110 | °C/W | 10-Lead Plastic MSOP | 2 |
CAD (KiCad official)
- Symbol:
LT3502EMS#TRPBF - Footprint:
Package_SO:MSOP-10_3x3mm_P0.5mm - 3D model: MSOP-10 (KiCad packages3D, STEP)
- 3D model files:
lt3502ems-trpbf-etched.step/lt3502ems-trpbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lt3502ems-trpbf.step/lt3502ems-trpbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (24 pp, sha256
ee1026fdeba3ecdd, retrieved 2026-11-02, 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).