component

TLE4251G

Public Made by Adom

by adom

Infineon Technologies Linear Voltage Regulators (LDO), TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icstle4251gfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 15d ago
viewers tle4251g: viewers · Ray 15d ago
package.json Publish 0.1.0 · Ray 15d ago
page.json Set visibility: public · Ray 15d ago
README.md Publish 0.1.0 · Ray 15d ago
tle4251g-etched.glb Publish 0.1.0 · Ray 15d ago
tle4251g-etched.step tle4251g: factory component page (tier=lcsc) · Ray 15d ago
tle4251g-hero.glb tle4251g: hero GLB from the etched model (keeps the MPN mark) · Ray 15d ago
tle4251g-hero.overlay.json Publish 0.1.0 · Ray 15d ago
tle4251g.glb Publish 0.1.0 · Ray 15d ago
tle4251g.kicad_mod Publish 0.1.0 · Ray 15d ago
tle4251g.kicad_sym Publish 0.1.0 · Ray 15d ago
tle4251g.lbr Publish 0.1.0 · Ray 15d ago
tle4251g.step Publish 0.1.0 · Ray 15d ago

TLE4251G

Infineon Technologies · Linear Voltage Regulators (LDO) · TO-263-5

TLE4251G from Infineon Technologies, in a TO-263-5. 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 I power_in Input voltage; operating range is 4 V to 40 V (must exceed VADJ + VDR), absolute maximum -42 V to 45 V.
2 EN input Enable, high-active input; ON above 2 V, OFF below 0.5 V, operating range 0 V to 40 V.
3 GND power_in Ground.
4 ADJ input Adjust input; connect directly to the reference or via a voltage divider to the reference (for reference-proportional output voltages, VQ<Vref), operating range 2.5 V to 40 V.
5 Q power_out Output voltage; must be blocked by a capacitor CQ ≥ 22 μF with ESR ≤ 3 Ω to GND, capable of 400 mA minimum output current.
6 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Infineon Technologies
Package TO-263-5
Category Power Management ICs
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
Output voltage tracking accuracy ΔVQ -10 10 mV VI < 13.5 V; -40 °C < Tj < 125 °C; 1 mA < IQ < 300 mA 6
Output voltage tracking accuracy ΔVQ -25 25 mV 6 V < VI < 28 V; 1 mA < IQ < 300 mA 6
Drop voltage Vdr 280 520 mV IQ = 300 mA; VADJ > 4 V; Enable ON 6
Output current IQ 400 450 800 mA Tj ≤ 125 °C 6
Output capacitor CQ 22 μF ESR ≤ 3 Ω at 10 kHz 6
Current consumption Iq 10 20 mA IQ = 300 mA 6
Current consumption Iq 230 300 μA IQ < 1 mA; Tj < 85 °C; VEN in ON state 6
Quiescent current (stand-by) Iq 0 2 μA VEN = 0 V; Tj < 85 °C 6
Load regulation ΔVQ -35 5 35 mV 5 mA < IQ < 300 mA; VI = 6 V; VADJ = 5 V 6
Line regulation ΔVQ -25 10 25 mV 12 V < VI < 32 V; IQ = 5 mA 6
Power Supply Ripple Rejection PSRR 60 dB fr = 100 Hz; Vr = 0.5 Vpp; VADJ = 5 V; CQ = 22 μF Tantalum 6
Input biasing current IADJ 0.1 0.5 μA VADJ = 5 V 6
Enable on voltage range VEN ON 2 V VQ ON 7
Enable off voltage range VEN OFF 0.5 V VQ ≤ 0.1 V 7
Enable input current IEN 5 40 70 μA VEN = 5 V 7
Input voltage VI -42 45 V -40 °C < Tj < 150 °C 4
Output voltage VQ -2 45 V -40 °C < Tj < 150 °C 4
Adjust voltage VADJ -42 45 V -40 °C < Tj < 150 °C 4
Enable voltage VEN -42 45 V -40 °C < Tj < 150 °C 4
Junction temperature Tj -40 150 °C 4
Storage temperature Tstg -50 150 °C 4
Thermal resistance junction case Rthjc 3 K/W TLE 4251 G 4
Thermal resistance junction ambient Rthja 52 K/W TLE 4251 G; worst case, zero airflow; PCB 80 × 80 × 1.5 mm3, heat sink area 300 mm2 4
Input voltage VI 4 40 V VI > VADJ + VDR 5
Adjust input voltage VADJ 2.5 40 V 5
Adjust input voltage VADJ 0 2.5 V VQ ≤ VADJ + ΔVQ 5
Enable input voltage VEN 0 40 V 5
Junction temperature Tj -40 150 °C 5

CAD (KiCad official)

  • Symbol: TLE4251G
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: tle4251g-etched.step / tle4251g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tle4251g.step / tle4251g.glb are the bare package body.

Provenance

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

  • Datasheet: Infineon Technologies datasheet (13 pp, sha256 65914e9af5fa2bed, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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