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DIO54302TST6
Public Made by Adomby adom
DIOO DC-DC Converters, TSOT-23-6. 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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Contents
README
markdownDIO54302TST6
DIOO · DC-DC Converters · TSOT-23-6
DIO54302TST6 from DIOO, in a TSOT-23-6. 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 | GND | power_in | Power ground; maximize the PCB copper area connected to this pin for best thermal and noise performance. |
| 2 | SW | passive | Inductor pin; connect to the switching node of the inductor (absolute maximum -0.3 to VIN+0.3 V). |
| 3 | VIN | power_in | Power input with a 4.5 to 28 V operating range; place the input capacitor close to this pin and GND. |
| 4 | FB | input | Output feedback pin connected to the center of the output resistor divider to set VOUT=0.6*(1+R1/R2), with an optional 10pF~47pF C2 to speed up the transient response. |
| 5 | EN | input | Enable pin; float the EN pin to enable the converter. |
| 6 | BS | passive | Bootstrap pin; connect a capacitor (0.1μF recommended) and a resistor between SW and BS to form a floating supply across the high-side switch driver. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DIOO |
| Package | TSOT-23-6 |
| Category | Power Supply Chip |
| 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 Voltage Range | VIN | 4.5 | 28 | V | VIN = 12V, VOUT = 1.2V, L = 2.2μH, COUT = 47μF, TA = 25°C, IOUT=1A | 4 | |
| Quiescent Current | IQ | 140 | µA | IOUT=0, VFB=VREF⋅105% | 4 | ||
| Shutdown Current | ISHDN | 5 | 10 | µA | EN=0 | 4 | |
| Feedback Reference Voltage | VREF | 0.588 | 0.6 | 0.612 | V | 4 | |
| FB Input Current | IFB | -50 | 50 | nA | VFB=3.3V | 4 | |
| Top FET RON | RDS(ON) | 80 | mΩ | 4 | |||
| Bottom FET RON | RDS(ON) | 40 | mΩ | 4 | |||
| Low side power FET current limit | ILIM | 3 | 4 | A | 4 | ||
| EN Rising Threshold | VENH | 1.21 | 1.28 | V | 4 | ||
| EN Falling Threshold | VENL | 1.1 | 1.19 | V | 4 | ||
| VIN Under-Voltage Unlock Threshold, Rising | VUVLO | 4.45 | V | 4 | |||
| Switching Frequency | fSW | 500 | kHz | 4 | |||
| Min ON Time | 40 | ns | 4 | ||||
| Min OFF Time | 180 | ns | 4 | ||||
| Soft Start Time | TSS | 1 | ms | 4 | |||
| Thermal Shutdown Temperature | TSD | 148 | °C | 4 | |||
| Thermal Shutdown Hysteresis | THYS | 20 | °C | 4 | |||
| Supply Voltage (recommended) | 4.5 | 28 | V | 3 | |||
| Junction Temperature Range (recommended) | -40 | 125 | °C | 3 | |||
| Ambient Temperature Range (recommended) | -40 | 85 | °C | 3 | |||
| Supply Voltage (V+, V-) | -0.3 | 32 | V | 3 | |||
| EN, SW Voltage | -0.3 | V | -0.3 to VIN+0.3 V | 3 | |||
| FB Voltage | -0.3 | 6 | V | 3 | |||
| BS Voltage | -0.3 | V | -0.3 to SW+6 V | 3 | |||
| SW Voltage (15ns transient) | -5 | 32 | V | 15ns transient | 3 | ||
| Storage Temperature Range | -65 | 150 | °C | 3 | |||
| Junction Temperature Range | 150 | °C | 3 | ||||
| Lead Temperature Range | 260 | °C | 3 | ||||
| Thermal Resistance Junction to Ambient | ӨJA | 87.9 | °C/W | 3 | |||
| Thermal Resistance Junction to Case | ӨJC | 42.2 | °C/W | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | 1) It is desirable to maximize the PCB copper area connecting to GND pin to achieve the best thermal and | 8 |
CAD (KiCad official)
- Symbol:
DIO54302TST6 - Footprint:
Package_TO_SOT_SMD:TSOT-23-6 - 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
dio54302tst6-etched.step/dio54302tst6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dio54302tst6.step/dio54302tst6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DIOO datasheet (11 pp, sha256
4073d1266eb04daa, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).