component
RT8259GE
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.
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RT8259GE
Richtek Tech · DC-DC Converters · SOT-23-6
RT8259GE 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 | BOOT | passive | Bootstrap pin: a 10nF low-ESR capacitor connects between BOOT and PHASE to form the floating supply for the high-side gate driver, and the BOOT voltage is limited to VPHASE + 6V. |
| 2 | GND | power_in | Ground and voltage reference for the regulated output; it should be placed outside the D1-to-C1 ground path so switching current spikes do not couple into the reference. |
| 3 | FB | input | Feedback input: an external resistor divider from VOUT to GND sets the output voltage against the 0.8V (0.784V to 0.816V) reference, with VOUT adjustable from 0.8V to 15V. |
| 4 | EN | input | Active-high chip enable with VIH minimum 1.4V and VIL maximum 0.4V; the pin is pulled high internally when left open, and EN voltage is rated 0V to 5.5V. |
| 5 | VIN | power_in | Supply input with a recommended range of 4.5V to 24V and an absolute maximum of 26V; it should be bypassed to GND with a suitably large capacitor to limit input voltage spikes. |
| 6 | PHASE | output | Switch output node of the internal power MOSFET (0.3Ω typical RDS(ON)), with absolute maximum rating of −0.3V to (VIN + 0.3V). |
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 |
|---|---|---|---|---|---|---|---|
| Feedback Reference Voltage | VFB | 0.784 | 0.8 | 0.816 | V | 4.5V ≤ VIN ≤ 24V | 3 |
| Feedback Current | IFB | 0.1 | 0.3 | μA | VFB = 0.8V | 3 | |
| Switch Leakage Current | 10 | μA | VEN = 0V, VPHASE = 0V | 3 | |||
| Current Limit | ILIM | 1.6 | 2.1 | A | VBOOT − VPHASE = 4.8V | 3 | |
| Oscillator Frequency | fSW | 1.2 | 1.4 | 1.6 | MHz | 3 | |
| EN Input Voltage Logic-High | VIH | 1.4 | V | 3 | |||
| EN Input Voltage Logic-Low | VIL | 0.4 | V | 3 | |||
| Under Voltage Lockout Threshold Rising | 3.9 | 4.2 | 4.5 | V | 3 | ||
| Quiescent Current | IQ | 0.55 | 1 | mA | VEN = 2V, VFB = 1V (Not Switching) | 4 | |
| Supply Voltage | VIN | 4.5 | 24 | V | 3 | ||
| Output Voltage | VOUT | 0.8 | 15 | V | 3 | ||
| EN Voltage | VEN | 0 | 5.5 | V | 3 | ||
| Junction Temperature Range | TJ | -40 | 125 | °C | 3 | ||
| Ambient Temperature Range | TA | -40 | 85 | °C | 3 | ||
| Supply Voltage | VIN | 26 | V | 3 | |||
| PHASE Voltage | -0.3 | V | Printed as −0.3V to (VIN + 0.3V); upper limit is an expression of VIN | 3 | |||
| All Other Pins Voltage | -0.3 | 6 | V | 3 | |||
| Output Voltage | VOUT | -0.3 | 15 | V | 3 | ||
| Power Dissipation | PD | 0.4 | W | TA = 25°C, T/SOT-23-6 | 3 | ||
| Junction Temperature | TJ | 150 | °C | 3 | |||
| Lead Temperature | 260 | °C | Soldering, 10 sec. | 3 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 3 | ||
| ESD Susceptibility HBM (Human Body Model) | 2 | kV | 3 | ||||
| ESD Susceptibility MM (Machine Model) | 200 | V | 3 | ||||
| Package Thermal Resistance, Junction to Ambient | θJA | 250 | °C/W | T/SOT-23-6 | 3 | ||
| Switch On Resistance | RDS(ON) | 0.3 | Ω | 3 | |||
| Maximum Duty Cycle | 80 | % | 3 | ||||
| Minimum On-Time | tON | 100 | ns | 3 | |||
| Under Voltage Lockout Threshold Hysteresis | 200 | mV | 3 | ||||
| EN Pull Up Current | 1 | μA | VEN = 0V | 3 | |||
| Shutdown Current | ISHDN | 25 | μA | VEN = 0V | 4 | ||
| Thermal Shutdown | TSD | 150 | °C | 4 |
CAD (KiCad official)
- Symbol:
RT8259GE - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
rt8259ge-etched.step/rt8259ge-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rt8259ge.step/rt8259ge.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (13 pp, sha256
25d69ed3a5aa3575, 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).
# RT8259GE
**Richtek Tech** · DC-DC Converters · SOT-23-6
RT8259GE 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 | BOOT | passive | Bootstrap pin: a 10nF low-ESR capacitor connects between BOOT and PHASE to form the floating supply for the high-side gate driver, and the BOOT voltage is limited to VPHASE + 6V. |
| 2 | GND | power_in | Ground and voltage reference for the regulated output; it should be placed outside the D1-to-C1 ground path so switching current spikes do not couple into the reference. |
| 3 | FB | input | Feedback input: an external resistor divider from VOUT to GND sets the output voltage against the 0.8V (0.784V to 0.816V) reference, with VOUT adjustable from 0.8V to 15V. |
| 4 | EN | input | Active-high chip enable with VIH minimum 1.4V and VIL maximum 0.4V; the pin is pulled high internally when left open, and EN voltage is rated 0V to 5.5V. |
| 5 | VIN | power_in | Supply input with a recommended range of 4.5V to 24V and an absolute maximum of 26V; it should be bypassed to GND with a suitably large capacitor to limit input voltage spikes. |
| 6 | PHASE | output | Switch output node of the internal power MOSFET (0.3Ω typical RDS(ON)), with absolute maximum rating of −0.3V to (VIN + 0.3V). |
## 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 |
|---|---|---|---|---|---|---|---|
| Feedback Reference Voltage | VFB | 0.784 | 0.8 | 0.816 | V | 4.5V ≤ VIN ≤ 24V | 3 |
| Feedback Current | IFB | | 0.1 | 0.3 | μA | VFB = 0.8V | 3 |
| Switch Leakage Current | | | | 10 | μA | VEN = 0V, VPHASE = 0V | 3 |
| Current Limit | ILIM | 1.6 | 2.1 | | A | VBOOT − VPHASE = 4.8V | 3 |
| Oscillator Frequency | fSW | 1.2 | 1.4 | 1.6 | MHz | | 3 |
| EN Input Voltage Logic-High | VIH | 1.4 | | | V | | 3 |
| EN Input Voltage Logic-Low | VIL | | | 0.4 | V | | 3 |
| Under Voltage Lockout Threshold Rising | | 3.9 | 4.2 | 4.5 | V | | 3 |
| Quiescent Current | IQ | | 0.55 | 1 | mA | VEN = 2V, VFB = 1V (Not Switching) | 4 |
| Supply Voltage | VIN | 4.5 | | 24 | V | | 3 |
| Output Voltage | VOUT | 0.8 | | 15 | V | | 3 |
| EN Voltage | VEN | 0 | | 5.5 | V | | 3 |
| Junction Temperature Range | TJ | -40 | | 125 | °C | | 3 |
| Ambient Temperature Range | TA | -40 | | 85 | °C | | 3 |
| Supply Voltage | VIN | | | 26 | V | | 3 |
| PHASE Voltage | | -0.3 | | | V | Printed as −0.3V to (VIN + 0.3V); upper limit is an expression of VIN | 3 |
| All Other Pins Voltage | | -0.3 | | 6 | V | | 3 |
| Output Voltage | VOUT | -0.3 | | 15 | V | | 3 |
| Power Dissipation | PD | | | 0.4 | W | TA = 25°C, T/SOT-23-6 | 3 |
| Junction Temperature | TJ | | | 150 | °C | | 3 |
| Lead Temperature | | | | 260 | °C | Soldering, 10 sec. | 3 |
| Storage Temperature Range | TSTG | -65 | | 150 | °C | | 3 |
| ESD Susceptibility HBM (Human Body Model) | | | | 2 | kV | | 3 |
| ESD Susceptibility MM (Machine Model) | | | | 200 | V | | 3 |
| Package Thermal Resistance, Junction to Ambient | θJA | | 250 | | °C/W | T/SOT-23-6 | 3 |
| Switch On Resistance | RDS(ON) | | 0.3 | | Ω | | 3 |
| Maximum Duty Cycle | | | 80 | | % | | 3 |
| Minimum On-Time | tON | | 100 | | ns | | 3 |
| Under Voltage Lockout Threshold Hysteresis | | | 200 | | mV | | 3 |
| EN Pull Up Current | | | 1 | | μA | VEN = 0V | 3 |
| Shutdown Current | ISHDN | | 25 | | μA | VEN = 0V | 4 |
| Thermal Shutdown | TSD | | 150 | | °C | | 4 |
## CAD (KiCad official)
- Symbol: `RT8259GE`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `rt8259ge-etched.step` / `rt8259ge-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rt8259ge.step` / `rt8259ge.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Richtek Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586172763547164672) (13 pp, sha256 `25d69ed3a5aa3575`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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](docs/rt8259ge-datasheet.pdf)