component
RT6255BHGJ6F
Public Made by Adomby adom
Richtek Tech DC-DC Converters, SOT-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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README
markdownRT6255BHGJ6F
Richtek Tech · DC-DC Converters · SOT-23-6
RT6255BHGJ6F from Richtek Tech, in a SOT-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 that sets the output voltage through an external resistive divider, referenced to the 0.6V feedback threshold (0.594V to 0.606V). |
| 2 | EN | input | Enable control input: logic high enables the device and connecting it to GND disables it, with EN_H minimum 1.5V and EN_L maximum 0.4V. |
| 3 | GND | power_in | System ground that serves as the power return for the IC. |
| 4 | VIN | power_in | Power input that supplies the power switches, specified for a 4.5V to 18V supply with an absolute maximum of 20V. |
| 5 | LX | output | Switch node that supplies power to the output through the LC filter; it carries high-frequency voltage swing and should be kept to a small area, with absolute maximum rating of -0.3V to 20V (-5V to 27V for less than 20ns). |
| 6 | BOOT | power_out | Bootstrap supply for the high-side gate driver, connected through a 0.1µF low-ESR ceramic capacitor to LX, with BOOT-to-LX limited to -0.3V to 6V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | SOT-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 |
|---|---|---|---|---|---|---|---|
| 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 Input Voltage | VIN | 4.5 | 18 | V | 8 | ||
| Junction Temperature Range | -40 | 125 | °C | 8 | |||
| Ambient Temperature Range | -40 | 85 | °C | 8 | |||
| Supply Input Voltage (absolute maximum) | 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 (transient) | LX | -5 | 27 | V | <20ns | 8 | |
| BOOT to LX Voltage | VBOOT − VLX | -0.3 | 6 | V | 8 | ||
| Other Pins Voltage | -0.3 | 6 | V | 8 | |||
| Power Dissipation TSOT-23-6 (FC) | PD | 1.923 | W | TA = 25°C | 8 | ||
| Junction Temperature | 150 | °C | 8 | ||||
| Lead Temperature (Soldering, 10 sec.) | 260 | °C | 8 | ||||
| Storage Temperature Range | -65 | 150 | °C | 8 | |||
| ESD Susceptibility HBM | 2 | kV | Human Body Model | 8 | |||
| Package Thermal Resistance TSOT-23-6 (FC) junction-to-ambient | θJA | 52 | °C/W | 8 | |||
| Package Thermal Resistance TSOT-23-6 (FC) junction-to-case | θJC | 5 | °C/W | 8 |
CAD (KiCad official)
- Symbol:
RT6255BHGJ6F - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
rt6255bhgj6f-etched.step/rt6255bhgj6f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rt6255bhgj6f.step/rt6255bhgj6f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (21 pp, sha256
9851a77a1f4d8bce, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).