component

DIO54270TST6

Public Made by Adom

by adom

DIOO DC-DC Converters, TSOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DIO54270TST6

DIOO · DC-DC Converters · TSOT-23-6

DIO54270TST6 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.
2 SW output Inductor pin; connect to the switching node of the inductor.
3 VIN power_in Power input, 4.5V to 28V operating range (30V absolute maximum supply).
4 FB input Output feedback pin; connect to the center point of the output resistor divider to program VOUT=0.8*(1+R1/R2), with optional 10pF~47pF C2 to speed up transient response.
5 EN input Enable control; pull high to turn on and do not float (rising threshold 1.5V, falling threshold 0.4V).
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 Management (PMIC)
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
Supply Voltage (V+, V-) 30 V 3
FB Voltage 6 V 3
Power Dissipation, PD @ TA = 25°C, TSOT23-6 PD 0.6 W TA = 25°C, TSOT23-6 3
Storage Temperature Range -65 150 °C 3
Junction Temperature Range (absolute maximum) 150 °C 3
Lead Temperature Range 260 °C 3
Supply Voltage 4.5 28 V 3
Junction Temperature Range (recommended) -40 125 °C 3
Ambient Temperature Range -40 85 °C 3
Package Thermal Resistance, junction-to-ambient ӨJA 170 °C/W 3
Package Thermal Resistance, junction-to-case ӨJC 130 °C/W 3
Input Voltage Range VIN 4.5 28 V 4
Feedback Reference Voltage VREF 0.788 0.8 0.812 V 4
FB Input Current IFB -50 50 nA VFB=VIN 4
Quiescent Current IQ 140 µA IOUT=0, VFB=VREF ⋅ 105% 4
Shutdown Current ISHDN 5 10 µA EN=0 4
Top FET RON RDS(ON) 120 mΩ 4
Bottom FET RON RDS(ON) 75 mΩ 4
Bottom FET Valley Current Limit ILIM 2 A 4
EN Rising Threshold VENH 1.5 V 4
EN Falling Threshold VENL 0.4 V 4
Input UVLO Threshold VUVLO 4.5 V 4
Switching Frequency fSW 500 kHz 4
ON Time TON 200 ns VIN = 12V, VOUT = 1.2V, IOUT=1A 4
Min ON Time 50 ns 4
Min OFF Time 100 ns 4
Soft Start Time TSS 1 ms 4
Thermal Shutdown Temperature TSD 150 °C 4
Thermal Shutdown Hysteresis THYS 15 °C 4

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 9

CAD (KiCad official)

  • Symbol: DIO54270TST6
  • Footprint: Package_TO_SOT_SMD:TSOT-23-6
  • 3D model: TSOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: dio54270tst6-etched.step / dio54270tst6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dio54270tst6.step / dio54270tst6.glb are the bare package body.

Provenance

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

  • Datasheet: DIOO datasheet (10 pp, sha256 116b874f6e5de025, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF