component
LM2734XMKX
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TSOT-23-6. 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
markdownLM2734XMKX
Texas Instruments · DC-DC Converters · TSOT-23-6
LM2734XMKX from Texas Instruments, in a TSOT-23-6. 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 | BOOST | input | Boost voltage that drives the internal NMOS control switch, with a bootstrap capacitor connected between BOOST and SW; Boost to SW voltage is rated 1.6 V to 5.5 V in recommended operating conditions. |
| 2 | GND | power_in | Signal and power ground pin; place the bottom resistor of the feedback network as close as possible to this pin for accurate regulation. |
| 3 | FB | input | Feedback pin connected to the external resistor divider that sets the output voltage; FB voltage absolute maximum is 3 V. |
| 4 | EN | input | Enable control input where logic high enables operation; do not allow this pin to float or be greater than VIN + 0.3 V. |
| 5 | VIN | power_in | Input supply voltage with a recommended range of 3 V to 20 V; connect a bypass capacitor to this pin. |
| 6 | SW | output | Output switch that connects to the inductor, catch diode and bootstrap capacitor; SW voltage absolute maximum is 24 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN | VIN | -0.5 | 24 | V | 4 | ||
| SW voltage | -0.5 | 24 | V | 4 | |||
| Boost voltage | -0.5 | 30 | V | 4 | |||
| Boost to SW voltage | -0.5 | 6 | V | 4 | |||
| FB voltage | -0.5 | 3 | V | 4 | |||
| EN voltage | -0.5 | V | maximum printed as VIN + 0.3 V | 4 | |||
| Junction temperature | TJ | 150 | °C | 4 | |||
| Soldering reflow peak package temperature | 260 | °C | 15 s | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| VIN | VIN | 3 | 20 | V | 4 | ||
| SW voltage | -0.5 | 20 | V | 4 | |||
| Boost voltage | -0.5 | 25 | V | 4 | |||
| Boost to SW voltage | 1.6 | 5.5 | V | 4 | |||
| Junction temperature | TJ | -40 | 125 | °C | 4 | ||
| Feedback voltage | VFB | 0.784 | 0.8 | 0.816 | V | TJ = 25°C | 5 |
| Feedback voltage line regulation | ΔVFB/ΔVIN | 0.01 | %/V | VIN = 3V to 20V | 5 | ||
| Feedback input bias current | IFB | 10 | 250 | nA | Sink/Source | 5 | |
| UVLO hysteresis | 0.3 | 0.44 | 0.62 | V | 5 | ||
| Switching frequency LM2734X | FSW | 1.2 | 1.6 | 1.9 | MHz | LM2734X | 5 |
| Maximum duty cycle LM2734X | DMAX | 85 | 92 | % | LM2734X | 5 | |
| Minimum duty cycle LM2734X | DMIN | 2 | % | LM2734X | 5 | ||
| Switch ON resistance | RDS(ON) | 300 | 600 | mΩ | VBOOST - VSW = 3V | 5 | |
| Switch current limit | ICL | 1.2 | 1.7 | 2.5 | A | VBOOST - VSW = 3V | 5 |
| Quiescent current switching | IQ | 1.5 | 2.5 | mA | Switching | 5 | |
| Boost pin current LM2734X | IBOOST | 2.5 | 3.5 | mA | LM2734X (50% Duty Cycle) | 5 | |
| Quiescent current shutdown | IQ | 30 | nA | VEN = 0V | 5 | ||
| Shutdown threshold voltage | VEN_TH | 0.4 | V | VEN Falling | 5 | ||
| Enable threshold voltage | VEN_TH | 1.8 | V | VEN Rising | 5 | ||
| Enable pin current | IEN | 10 | nA | Sink/Source | 5 | ||
| Switch leakage | ISW | 40 | nA | 5 | |||
| Junction-to-ambient thermal resistance | RθJA | 158.1 | °C/W | DDC (SOT-23-THIN) 6 pins | 4 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 46.5 | °C/W | DDC (SOT-23-THIN) 6 pins | 4 | ||
| Junction-to-board thermal resistance | RθJB | 29.5 | °C/W | DDC (SOT-23-THIN) 6 pins | 4 | ||
| Junction-to-top characterization parameter | ψJT | 0.8 | °C/W | DDC (SOT-23-THIN) 6 pins | 4 | ||
| Junction-to-board characterization parameter | ψJB | 29.2 | °C/W | DDC (SOT-23-THIN) 6 pins | 4 |
CAD (KiCad official)
- Symbol:
LM2734XMKX - Footprint:
Package_TO_SOT_SMD:TSOT-23-6 - 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
lm2734xmkx-etched.step/lm2734xmkx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2734xmkx.step/lm2734xmkx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
737a26f91c5434f9, retrieved 2026-11-05, 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).