component
SCT2321TVBR
Public Made by Adomby adom
SCT DC-DC Converters, TSOT-23-6L. 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
markdownSCT2321TVBR
SCT · DC-DC Converters · TSOT-23-6L
SCT2321TVBR from SCT, in a TSOT-23-6L. 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 | FB | input | Buck converter output feedback sensing pin; connect a resistor divider from VOUT to set the output voltage, regulated to the internal 0.8V typical reference. |
| 2 | EN | input | Enable logic input; floating enables the device, tolerates up to VIN, with precision thresholds of 1.18V rising / 1.1V falling for programmable UVLO and hysteresis. |
| 3 | VIN | power_in | Power supply input (3.8V to 32V operating) that must be locally bypassed. |
| 4 | GND | power_in | Power ground that must be soldered directly to the ground plane. |
| 5 | SW | output | Switching node of the buck converter. |
| 6 | BST | passive | Power supply for the high-side MOSFET gate driver; connect a 0.1uF or greater ceramic capacitor between BST and SW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SCT |
| Package | TSOT-23-6L |
| 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 |
|---|---|---|---|---|---|---|---|
| Input UVLO rising | VIN_UVLO | 3.5 | 3.7 | V | VIN rising | 4 | |
| Operating input voltage | VIN | 3.8 | 32 | V | 4 | ||
| Shutdown current | ISD | 1 | 3 | uA | EN=0, No load, VIN=12V | 4 | |
| Enable high threshold | VEN_H | 1.18 | 1.25 | V | 4 | ||
| Enable low threshold | VEN_L | 1.03 | 1.1 | V | 4 | ||
| Enable pin input current | IEN | 1 | 1.5 | 2 | uA | EN=1V | 4 |
| Feedback Voltage | VFB | 0.792 | 0.8 | 0.808 | V | 4 | |
| HSD peak current limit | ILIM_HSD | 2.5 | 2.8 | 3.1 | A | 4 | |
| LSD valley current limit | ILIM_LSD | 2.8 | 3.2 | 3.6 | A | 4 | |
| Switching frequency | FSW | 450 | 500 | 550 | kHz | VIN=12V, VOUT=5V | 4 |
| Input voltage range | VIN | 3.8 | 32 | V | 3 | ||
| Operating junction temperature | TJ | -40 | 125 | °C | 3 | ||
| BST voltage | BST | -0.3 | 40 | V | 2 | ||
| VIN, SW, EN voltage | -0.3 | 34 | V | 2 | |||
| VS, FB voltage | -0.3 | 5.5 | V | 2 | |||
| Operating junction temperature | -40 | 125 | C | 2 | |||
| Storage temperature | TSTG | -65 | 150 | C | 2 | ||
| ESD HBM | VESD | -2 | 2 | kV | Human Body Model, all pins | 3 | |
| ESD CDM | VESD | -0.5 | 0.5 | kV | Charged Device Model, all pins | 3 | |
| Junction to ambient thermal resistance | RθJA | 89 | °C/W | TSOT23-6L | 3 | ||
| Junction to case thermal resistance | RθJC | 39 | °C/W | TSOT23-6L | 3 | ||
| UVLO hysteresis | 420 | mV | 4 | ||||
| Quiescent current | IQ | 250 | uA | EN=floating, No load, No switching. VIN=12V. BST-SW=5V | 4 | ||
| Enable pin hysteresis current | IEN_HYS | 4 | uA | EN=1.5V | 4 | ||
| High side FET on-resistance | RDSON_H | 130 | mΩ | 4 | |||
| Low side FET on-resistance | RDSON_L | 70 | mΩ | 4 | |||
| Minimum on-time | tON_MIN | 80 | ns | 4 | |||
| Internal soft-start time | tSS | 4 | ms | 4 | |||
| Output OVP threshold | VOVP | 110 | % | VOUT rising | 4 | ||
| Thermal shutdown threshold | TSD | 160 | °C | TJ rising | 4 |
CAD (KiCad official)
- Symbol:
SCT2321TVBR - Footprint:
Package_TO_SOT_SMD:TSOT-23-6 - 3D model: TSOT-23-6L (KiCad packages3D, STEP)
- 3D model files:
sct2321tvbr-etched.step/sct2321tvbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sct2321tvbr.step/sct2321tvbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SCT datasheet (20 pp, sha256
8aac15f8b026da70, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).