component
SL9459
Public Made by Adomby adom
Slkor SLKORMICRO Elec DC-DC Converters, SOT-23-6L. 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
markdownSL9459
Slkor SLKORMICRO Elec · DC-DC Converters · SOT-23-6L
SL9459 from Slkor SLKORMICRO Elec, in a SOT-23-6L. 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 | BST | passive | Bootstrap pin that raises the positive supply for the high-side MOSFET driver, with a boost capacitor connected between BST and SW. |
| 2 | GND | power_in | Ground pin, to be connected as close as possible to the output capacitor and kept away from the high-current switching path. |
| 3 | FB | input | Feedback input to the error amplifier that sets the output voltage; when the load is shorted and FB falls below 250mV, foldback reduces the oscillator frequency to ensure reliable current limiting. |
| 4 | EN | input | Enable input: pulling it below the specified threshold (Venf 1.17 V typ.) shuts the chip down and above Venr (1.35 V typ.) enables it, and a 100kΩ resistor to IN enables it automatically. |
| 5 | IN | power_in | Power supply input for all internal control circuitry, requiring a decoupling capacitor to ground to reduce switching spikes; operating range 4.5V to 60V, absolute maximum 62V. |
| 6 | SW | output | Switch output pin, with a low-VF Schottky diode to ground to be placed close to it to reduce switching spikes; SW voltage is limited to VIN(MAX)+0.3V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOT-23-6L |
| 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 voltage | Vfb | 0.792 | 0.812 | 0.832 | V | 4.5<Vin<60V | 4 |
| Oscillator frequency | Fosc | 380 | 480 | 580 | KHZ | 4 | |
| Current limit | Ilim | 1 | 1.25 | 1.5 | A | 4 | |
| UVLO turn-on voltage | Vuvlo-r | 2.9 | 3.3 | 3.73 | V | 4 | |
| UVLO turn-off voltage | Vuvlo-f | 2.65 | 3.05 | 3.45 | V | 4 | |
| Quiescent current | Iq | 0.73 | 0.86 | mA | Ven=2V, Vfb=1V | 4 | |
| Shutdown current | Is | 0.1 | 1 | uA | Ven=0V | 4 | |
| Input supply voltage (recommended) | VIN | 4.5 | 60 | V | 3 | ||
| Output voltage (recommended) | VOUT | 0.81 | V | max printed as 0.95*VIN | 3 | ||
| Operating junction temperature | TJ | -40 | 125 | °C | 3 | ||
| Input supply voltage (absolute maximum) | VIN | -0.3 | 62 | V | 3 | ||
| Switch voltage (absolute maximum) | VSW | -0.3 | V | max printed as VIN(MAX)+0.3V | 3 | ||
| BST to SW voltage (absolute maximum) | -0.3 | 6 | V | BST to SW | 3 | ||
| Other pins voltage (absolute maximum) | -0.3 | 6 | V | other pins | 3 | ||
| Continuous power dissipation | 0.568 | W | TA=+25°C | 3 | |||
| Junction temperature (absolute maximum) | 150 | °C | 3 | ||||
| Lead temperature (absolute maximum) | 260 | °C | 3 | ||||
| Storage temperature | -65 | 150 | °C | 3 | |||
| Thermal resistance junction to ambient | θJA | 220 | °C/W | SOT23-6L | 3 | ||
| Thermal resistance junction to case | θJC | 110 | °C/W | SOT23-6L | 3 |
CAD (KiCad official)
- Symbol:
SL9459 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6L (KiCad packages3D, STEP)
- 3D model files:
sl9459-etched.step/sl9459-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sl9459.step/sl9459.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor SLKORMICRO Elec datasheet (6 pp, sha256
e192c3fa29c39a41, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).