component

LM34927MR

Public Made by Adom

by adom

Texas Instruments DC-DC Converters, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lm34927mrfactory-2.0.0extractor-text
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lm34927mr-etched.glb lm34927mr: factory component page (tier=lcsc) · Ray 23h ago
lm34927mr-etched.step lm34927mr: factory component page (tier=lcsc) · Ray 23h ago
lm34927mr-hero.glb lm34927mr: hero GLB from the etched model (keeps the MPN mark) · Ray 18h ago
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LM34927MR

Texas Instruments · DC-DC Converters · SO-8

LM34927MR from Texas Instruments, in a SO-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 RTN power_in Ground connection of the integrated circuit; the exposed pad must be connected to this pin.
2 VIN power_in Input voltage with an operating input range of 7.5 V to 100 V; the RON resistor connects between this pin and RON to set on-time.
3 UVLO input Input to the undervoltage comparator; a resistor divider from VIN to UVLO to GND sets the undervoltage threshold, and pulling it below 0.66 V externally puts the part in shutdown.
4 RON input On-time control; a resistor between this pin and VIN sets the switch on-time as a function of VIN, with a minimum recommended on-time of 100 ns at maximum input voltage.
5 FB input Feedback pin connected to the inverting input of the internal regulation comparator, with a regulation level of 1.225 V.
6 VCC power_out Output of the internal high-voltage series pass regulator, regulated at 7.6 V, which biases the gate drivers and internal circuitry and requires a 1.0 µF decoupling capacitor.
7 BST input Bootstrap pin; a 0.01 µF ceramic capacitor is required between BST and SW, charged by VCC through an internal diode when SW is low.
8 SW output Power switching node that connects to the output inductor and the bootstrap capacitor.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SO-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: LM34927MR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: lm34927mr-etched.step / lm34927mr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm34927mr.step / lm34927mr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (34 pp, sha256 d9409c664f8b501b, retrieved 2026-10-08, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF