component

RT6255AHGJ6F

Public Made by Adom

by adom

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

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RT6255AHGJ6F

Richtek Tech · DC-DC Converters · TSOT-23-6

RT6255AHGJ6F from Richtek Tech, 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 FB input Feedback voltage input used to set the desired output voltage via an external resistive divider (0.6V typ threshold).
2 EN input Enable control input; logic high (min 1.5V) enables the device and connecting to GND (below 0.4V) disables it, abs max rating −0.3V to 20V.
3 GND power_in System ground and power return for the IC.
4 VIN power_in Power input supplying the power switches of the device, operating range 4.5V to 18V.
5 LX passive Switch node that supplies power to the output, connected to the output LC filter inductor; abs max −0.3V to 20V.
6 BOOT passive Bootstrap supply for the high-side gate driver; connect a 0.1µF ceramic capacitor from LX to BOOT.

Key specifications

Parameter Value
Manufacturer Richtek Tech
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
VIN Supply Input Operating Voltage VIN 4.5 18 V 8
VIN Under-Voltage Lockout Threshold-Rising VUVLO 3.9 4.1 4.3 V VIN rising 8
EN Input High Voltage VEN_H 1.5 V 9
EN Input Low Voltage VEN_L 0.4 V 9
Feedback Threshold Voltage VTH_FB 0.594 0.6 0.606 V 9
Feedback Current IFB -50 50 nA VFB = 4V 9
Low-Side Switch Valley Current Limit ILIM_L 5.25 7.25 9.25 A 9
Oscillator Frequency fSW 400 500 600 kHz 9
Supply Current (Shutdown) ISHDN 3 µA VEN = 0 8
Supply Current (Quiescent) IQ 115 µA IOUT = 0, VFB = VREF x 105% (not switching) 8
VIN UVLO Hysteresis VUVLO 0.3 V 8
Soft-Start Time tSS 1.5 ms 8
High-Side Switch On-Resistance RDS(ON)_H 45 mΩ VBOOT − VLX = 4.8V 9
Low-Side Switch On-Resistance RDS(ON)_L 23 mΩ 9
High-Side Switch Current Limit ILIM_H 10.5 A 9
Minimum On-Time tON_MIN 60 ns VIN = VIN(MAX) 9
Minimum Off-Time tOFF_MIN 200 ns 9
Thermal Shutdown Threshold TSD 150 °C 9
Thermal Shutdown Hysteresis TSD 15 °C 9
UVP Trip Threshold 60 % UVP detect 9
Supply Input Voltage VIN 4.5 18 V 8
Junction Temperature Range TJ -40 125 °C 8
Ambient Temperature Range TA -40 85 °C 8
Supply Input Voltage VIN -0.3 20 V 8
Enable Pin Voltage EN -0.3 20 V 8
Switch Node Voltage LX -0.3 20 V 8
Switch Node Voltage LX -5 27 V <20ns 8
BOOT to LX VBOOT − VLX -0.3 6 V 8
Other Pins -0.3 6 V 8
Power Dissipation PD 1.923 W TA = 25°C, TSOT-23-6 (FC) 8
Junction Temperature TJ 150 °C 8
Lead Temperature 260 °C Soldering, 10 sec. 8
Storage Temperature Range -65 150 °C 8
ESD Susceptibility HBM 2 kV HBM 8
Thermal Resistance Junction-to-Ambient θJA 52 °C/W TSOT-23-6 (FC) 8
Thermal Resistance Junction-to-Case θJC 5 °C/W TSOT-23-6 (FC) 8

CAD (KiCad official)

  • Symbol: RT6255AHGJ6F
  • Footprint: Package_TO_SOT_SMD:TSOT-23-6
  • 3D model: TSOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: rt6255ahgj6f-etched.step / rt6255ahgj6f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt6255ahgj6f.step / rt6255ahgj6f.glb are the bare package body.

Provenance

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

  • Datasheet: Richtek Tech datasheet (21 pp, sha256 9851a77a1f4d8bce, retrieved 2026-10-24, tier: manufacturer)
  • 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