component
STI3470
Public Made by Adomby adom
TMI DC-DC Converters, SOT-23-6. Pinout extracted from 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
markdownSTI3470
TMI · DC-DC Converters · SOT-23-6
STI3470 from TMI, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | BS | passive | Bootstrap pin. A 0.1uF capacitor is connected between LX and BS to form a floating supply for the high-side switch driver. Absolute max 25V. |
| 2 | GND | power_in | Device ground reference. Connect to the ground plane with a low-impedance path. |
| 3 | FB | input | Adjustable version feedback input. Connect to the center of an external resistor divider from VOUT. Regulated to the internal 0.6V reference (0.588V/0.600V/0.612V). |
| 4 | EN | input | Enable input. Drive to logic-high (>=1.5V) to enable the IC; drive to logic-low (<=0.3V) to disable and enter micro-power shutdown. Absolute max 23V. |
| 5 | IN | power_in | Power supply input pin. Operating range 3.5V-18V; absolute max 23V. Bypass with a low-ESR ceramic capacitor (typically 22uF) close to the pin. |
| 6 | LX | output | Switching node. Internal high-side (120mOhm) and low-side (80mOhm) MOSFET common node. Connect to the external inductor; also references the BS bootstrap capacitor. Absolute max 23V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| Package | SOT-23-6 |
| Category | PMIC |
| Pins | 6 |
Ordering variants
Same part, different packaging or reel option.
STI3470
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | 3.5 | 18 | V | 4 | |||
| OVP Threshold | 18.2 | 19 | 19.6 | V | 4 | ||
| UVLO Threshold | 3 | 3.4 | V | 4 | |||
| Supply Current in Operation | 0.5 | 0.8 | mA | VEN=2.0V, VFB=1.1V | 4 | ||
| Supply Current in Shutdown | 1 | 10 | μA | VEN=0 or EN=GND | 4 | ||
| Regulated Feedback Voltage | 0.588 | 0.6 | 0.612 | V | TA = 25°C, 3.5V ≤ VIN ≤ 18V | 4 | |
| High-Side Switch Leakage Current | 0 | 10 | μA | VEN=0V, VLX=0V | 4 | ||
| Upper Switch Current Limit | 2.5 | 3.2 | A | Minimum Duty Cycle | 4 | ||
| Oscillation Frequency | 540 | 600 | 660 | kHz | VFB=0.6V | 4 | |
| Maximum Duty Cycle | 95 | % | 4 | ||||
| Minimum On-Time | 60 | 90 | ns | 4 | |||
| Input Supply Voltage, EN | -0.3 | 23 | V | 2 | |||
| LX Voltages | -0.3 | 23 | V | 2 | |||
| FB Voltage | -0.3 | 6 | V | 2 | |||
| BS Voltage | -0.6 | 25 | V | 2 | |||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Junction Temperature | 160 | °C | 2 | ||||
| Power Dissipation | 600 | mW | 2 | ||||
| Lead Temperature (Soldering) | 260 | °C | Soldering, 10s | 2 | |||
| Voltage Range IN | 3.5 | 18 | V | 3 | |||
| TJ Operating Junction Temperature Range | TJ | -40 | 125 | °C | 3 | ||
| ESD Human Body Model, all pins | VESD_HBM | -2000 | 2000 | V | JEDEC JS-001 | 3 | |
| ESD Charge Device Model, all pins | VESD_CDM | -1000 | 1000 | V | JEDEC JS-001 | 3 | |
| High-Side Switch On-Resistance | 120 | mΩ | 4 | ||||
| Low-Side Switch On-Resistance | 80 | mΩ | 4 | ||||
| EN High Level Input Threshold | 1.5 | V | 4 | ||||
| EN Low Level Input Threshold | 0.3 | V | 4 | ||||
| Thermal Shutdown Threshold | 160 | °C | Note 4 | 4 | |||
| Thermal Shutdown Hysteresis | 30 | °C | Note 4 | 4 | |||
| Junction-to-ambient thermal resistance | θJA | 130 | °C/W | Note 3: JESD51-7, 4-layer PCB | 3 | ||
| Junction-to-case(top) thermal resistance | θJC | 60 | °C/W | Note 3: JESD51-7, 4-layer PCB | 3 |
CAD (KiCad official)
- Symbol:
STI3470 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
sti3470-etched.step/sti3470-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sti3470.step/sti3470.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TMI datasheet (13 pp, sha256
2fb3b7dd78ed2071, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).