component
TMI3344
Public Made by Adomby adom
TMI DC-DC Converters, ESOP-8. 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
markdownTMI3344
TMI · DC-DC Converters · ESOP-8
TMI3344 from TMI, in a ESOP-8. 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 | BS | passive | High-side gate driver bootstrap pin that supplies the high-side LDMOS gate driver, with a 100nF capacitor connected between BS and SW. |
| 2 | IN | power_in | Power input pin; the recommended input voltage range is 4.5V to 30V, and the input overvoltage protection threshold is typically 32V. |
| 3 | SW | output | Switch pin connected to the external inductor; the integrated high-side and low-side power MOSFETs drive this node. |
| 4 | GND | power_in | Ground pin for the device. |
| 5 | FB | input | Feedback pin that regulates the output against the 0.925V internal reference (±2% accuracy) via the external feedback divider. |
| 6 | COMP | passive | External compensation pin for the error amplifier output that feeds the peak current mode PWM comparator. |
| 7 | EN | input | Enable pin: logic-high enables the device and logic-low enters micro-power shutdown; it must not be left floating, has a 5V Zener clamp, and its sink current must stay below 1mA when pulled up through a resistor. |
| 8 | SS | passive | Soft-start and tracking pin; an external capacitor sets the soft-start time using the 2.6µA internal charge current, and the voltage on this pin overrides the internal reference. |
| 9 | GND | power_in | Ground exposed pad that should be connected to the power ground copper area with copper and vias for heat dissipation and noise immunity. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
TMI3344 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
tmi3344-etched.step/tmi3344-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmi3344.step/tmi3344.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TMI datasheet (14 pp, sha256
129a64be06632fa5, retrieved 2026-10-09, 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).