component
LM34923MMX
Public Made by Adomby adom
Texas Instruments DC-DC Converters, VSSOP-10-0.5mm. 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
markdownLM34923MMX
Texas Instruments · DC-DC Converters · VSSOP-10-0.5mm
LM34923MMX from Texas Instruments, in a VSSOP-10-0.5mm. 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 | power_out | Switching node that connects to the output inductor, re-circulating diode or synchronous FET, and the bootstrap capacitor. |
| 2 | BST | passive | An external capacitor of 0.01uF or greater (ceramic) is required between BST and SW, and it is charged from VCC through an internal diode when SW is low. |
| 3 | N/C | unconnected | Do not connect. |
| 4 | RTN | power_in | Ground pin for the entire circuit. |
| 5 | UV | input | A resistor divider from VIN or another system voltage programs the under-voltage detection threshold, and an internal current sink is enabled when UV is below 2.5V to provide hysteresis. |
| 6 | UVO | output | Open-drain under-voltage status output that is high when the UV pin is below 2.5V or when the VCC UVLO or shutdown function is invoked. |
| 7 | FB | input | Feedback input connected to the inverting input of the internal regulation comparator, with a regulation level of 2.5V. |
| 8 | RT/SD | input | A resistor between this pin and VIN sets the switch on-time (minimum recommended 200 ns at maximum input voltage), and taking this pin to ground shuts off the regulator. |
| 9 | VCC | power_out | Output of the internal high-voltage series-pass regulator, regulated at approximately 7.5V and current limited at about 30 mA, that requires a 1uF ceramic capacitor to ground. |
| 10 | VIN | power_in | Input voltage with an operating input range of 6V to 75V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-10-0.5mm |
| Category | Power Supply Chip |
| Pins | 10 |
CAD (KiCad official)
- Symbol:
LM34923MMX - Footprint:
Package_SO:MSOP-10_3x3mm_P0.5mm - 3D model: VSSOP-10-0.5mm (KiCad packages3D, STEP)
- 3D model files:
lm34923mmx-etched.step/lm34923mmx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm34923mmx.step/lm34923mmx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (28 pp, sha256
f665b4486b01209d, retrieved 2026-10-11, 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).