component
LT3970EMS-5#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
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Contents
README
markdownLT3970EMS-5#TRPBF
Analog Devices · DC-DC Converters · MSOP-10
LT3970EMS-5#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 | VOUT | input | For the LT3970-5 this pin is regulated to 5V and connects to the internal feedback divider that programs the fixed output voltage. |
| 2 | EN | input | Shutdown when low and active when high, with a hysteretic threshold of 1V rising and 0.97V falling; tie to VIN if unused, and the threshold is accurate only when VIN is above 4.2V. |
| 3 | VIN | power_in | Supplies current to the internal circuitry and the internal power switch (4.2V to 40V operating) and must be locally bypassed. |
| 4 | GND | power_in | Ground pin that must be soldered to the PCB. |
| 5 | GND | power_in | Ground pin that must be soldered to the PCB. |
| 6 | SW | output | Output of the internal power switch; connect this pin to the inductor. |
| 7 | BOOST | passive | Provides a drive voltage higher than the input voltage to the internal bipolar NPN power switch. |
| 8 | BD | passive | Connects to the anode of the boost diode and supplies current to the internal regulator when BD is above 3.2V. |
| 9 | PG | output | Open-drain output of an internal comparator that stays low until the output is within 10% of final regulation; valid when VIN is above 4.2V and EN is high. |
| 10 | RT | passive | A resistor tied between RT and ground sets the switching frequency (200kHz to 2.2MHz). |
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 |
|---|---|---|---|---|---|---|---|
| LT3970-5 Output Voltage | VOUT | 4.94 | 5 | 5.06 | V | TA = 25°C, VIN = 12V, VBD = 3.3V | 4 |
| LT3970-5 Output Voltage (-40°C to 125°C) | VOUT | 4.9 | 5 | 5.1 | V | -40°C to 125°C | 4 |
| Minimum Input Voltage | VIN(MIN) | 4 | 4.2 | V | 4 | ||
| Quiescent Current from VIN, VEN Low | IQ | 0.7 | µA | VEN Low | 4 | ||
| Quiescent Current from VIN, VEN High | IQ | 1.7 | 3.5 | µA | VEN High, -40°C to 125°C | 4 | |
| FB/Output Voltage Line Regulation | 0.0002 | 0.01 | %/V | 4.2V < VIN < 40V | 4 | ||
| Switching Frequency | fSW | 1.76 | 2.25 | 2.64 | MHz | RT = 41.2k, VIN = 6V | 4 |
| Switching Frequency | fSW | 640 | 800 | 960 | kHz | RT = 158k, VIN = 6V | 4 |
| Switching Frequency | fSW | 160 | 200 | 240 | kHz | RT = 768k, VIN = 6V | 4 |
| Switch Current Limit | 535 | 700 | 865 | mA | VIN = 5V, VFB = 0V | 4 | |
| Catch Schottky Current Limit | 350 | 400 | 500 | mA | VIN = 5V | 4 | |
| Switch Leakage Current | 0.05 | 2 | µA | 4 | |||
| Catch Schottky Reverse Leakage | 0.05 | 2 | µA | VSW = 12V | 4 | ||
| Boost Schottky Reverse Leakage | 0.02 | 2 | µA | VREVERSE = 12V | 4 | ||
| Minimum Boost Voltage | 1.4 | 1.8 | V | VIN = 5V | 4 | ||
| BOOST Pin Current | 7 | 10 | mA | ISW = 200mA, VBOOST = 15V | 4 | ||
| EN Pin Current | 1 | 30 | nA | VEN = 12V | 4 | ||
| LT3970-X EN Voltage Threshold | 0.93 | 1 | 1.07 | V | EN Rising, VIN ≥ 4.2V | 4 | |
| LT3970-X PG Threshold Offset from Output Voltage | 6.5 | 10 | 13.5 | % | VFB Rising | 4 | |
| PG Leakage | 0.01 | 1 | µA | VPG = 3V | 4 | ||
| PG Sink Current | 30 | 80 | µA | VPG = 0.4V | 4 | ||
| Minimum Switch Off-Time | 100 | 160 | ns | VIN = 10V | 4 | ||
| VIN, EN Voltage | 40 | V | 2 | ||||
| FB/VOUT, RT Voltage | 6 | V | 2 | ||||
| Operating Junction Temperature Range | -40 | 125 | °C | E-grade | 2 | ||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Thermal Resistance Junction to Ambient | θJA | 100 | °C/W | MS package | 2 | ||
| Minimum Switch On-Time | 90 | ns | 4 | ||||
| EN Voltage Hysteresis | 30 | mV | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | resistance further. In the MSOP package, the copper lead | 18 |
CAD (KiCad official)
- Symbol:
LT3970EMS-5#TRPBF - Footprint:
Package_SO:MSOP-10_3x3mm_P0.5mm - 3D model: MSOP-10 (KiCad packages3D, STEP)
- 3D model files:
lt3970ems-5-trpbf-etched.step/lt3970ems-5-trpbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lt3970ems-5-trpbf.step/lt3970ems-5-trpbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (24 pp, sha256
e25978555387c0ba, retrieved 2026-10-31, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).