component
BTS6143D
Public Made by Adomby adom
Infineon Technologies Power Distribution Switches, TO-252-4. Pinout extracted from 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
markdownBTS6143D
Infineon Technologies · Power Distribution Switches · TO-252-4
BTS6143D from Infineon Technologies, in a TO-252-4. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | power_out | Switched high-side output to the load. Pins 1 and 5 must be externally shorted together; failure to short them increases R_ON, reduces peak current capability, and degrades current-sense accuracy. |
| 2 | IN | input | Logic input; activates the power switch when pulled to ground (active-low via internal current source referenced to Vbb). Typical turn-on current capability 1.4 mA (max 2.2 mA); turn-off input current max 30 uA. |
| 3 | Vbb | power_in | Positive supply voltage input (5.5 to 38 V operating, 45 V load-dump). Pin 3 is internally shorted to the exposed tab, which is also the main thermal path. |
| 4 | IS | output | Diagnostic current-sense output. Sources a current proportional to load current during normal operation (k_ILIS ~ 10000, I_S = I_L / k_ILIS) through an external R_IS (typ. 1 kOhm) to signal GND, generating V_IS. In fault conditions (overload, overtemperature, short circuit) a defined I_S,fault (4-7.5 mA) is asserted; see Truth Table. |
| 5 | OUT | power_out | Switched high-side output to the load (second output lead of the power MOSFET). Pins 1 and 5 must be externally shorted together to achieve the specified R_ON and current handling. |
| TAB | Vbb | power_in | Exposed die-attach tab; internally shorted to pin 3 (Vbb). Serves as the main thermal path - solder to a copper area for adequate heat dissipation (R_thJA ~ 45 K/W on 50x50x1.5 mm FR4 with 6 cm2 copper). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | TO-252-4 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
BTS6143D - Footprint:
Package_TO_SOT_SMD:TO-252-4 - 3D model: TO-252-4 (KiCad packages3D, STEP)
- 3D model files:
bts6143d-etched.step/bts6143d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bts6143d.step/bts6143d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Infineon Technologies datasheet (18 pp, sha256
19a4b4b768b72bd6, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).