component
FAN5333ASX
Public Made by Adomby adom
onsemi LED Drivers, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownFAN5333ASX
onsemi · LED Drivers · SOT-23-5
FAN5333ASX from onsemi, in a SOT-23-5. 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 | SW | passive | Switching node connected to the internal N-channel switch; the datasheet gives an SW to GND absolute maximum range of −0.3 V to 35 V. |
| 2 | GND | power_in | Analog and power ground; the datasheet recommends a PCB ground plane connected to this pin as an EMI shield. |
| 3 | FB | input | Feedback pin that connects to the external current-set resistor divider; for the FAN5333A (this MPN) the feedback voltage is 110 mV typical (99 mV to 121 mV), and FB to GND is limited to −0.3 V to VIN + 0.3 V. |
| 4 | SHDN | input | Shutdown control where logic HIGH enables and logic LOW disables the device, with a device-on threshold of 1.5 V and device-off threshold of 0.5 V; SHDN to GND is limited to −0.3 V to VIN + 0.3 V. |
| 5 | VIN | power_in | Input voltage pin with a recommended operating range of 1.8 V to 5.5 V and an absolute maximum VIN to GND of 6.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23-5 |
| Category | LED Drivers |
| Pins | 5 |
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 (FAN5333A, 110 mV variant) | VFB | 99 | 110 | 121 | mV | 3 | |
| Switch Current Limit | ILIM | 1.1 | 1.5 | A | VIN = 3.2 V | 3 | |
| Switching Frequency | fSW | 1.2 | 1.5 | 1.8 | MHz | 3 | |
| Maximum Duty Cycle | DMAX | 87 | 93 | % | 3 | ||
| Shutdown Threshold, Device ON | VSHDN | 1.5 | V | Device ON | 3 | ||
| Shutdown Threshold, Device OFF | VSHDN | 0.5 | V | Device OFF | 3 | ||
| OFF Mode Current | IOFF | 0.1 | 3 | µA | VSHDN = 0 V | 3 | |
| Shutdown Pin Bias Current | ISHDN | 1 | 300 | nA | VSHDN = 0 V or VSHDN = 5.5 V | 3 | |
| Feedback Pin Bias Current | IFB | 1 | 300 | nA | 3 | ||
| Load Current Capability | ILOAD | 65 | mA | VOUT ≤ 20 V, VIN = 3.2 V | 3 | ||
| Switch On-resistance | RDS(ON) | 0.6 | VIN = 5 V | 3 | |||
| Switch On-resistance | RDS(ON) | 0.7 | VIN = 3.6 V | 3 | |||
| Quiescent Current | IQ | 0.6 | mA | VSHDN = 3.6 V, No Switching | 3 | ||
| Feedback Voltage Line Regulation | 0.3 | % | 2.7 V < VIN < 5.5 V, VOUT ≤ 20 V | 3 | |||
| Switch Leakage Current | 1 | µA | No Switching, VIN = 5.5 V | 3 | |||
| OVP (over-voltage protection threshold above nominal) | 15 | % | 3 | ||||
| Thermal Shutdown Temperature | 150 | °C | 3 | ||||
| Input Voltage | VIN | 1.8 | 5.5 | V | 3 | ||
| Output Voltage | VOUT | 30 | V | 3 | |||
| Operating Ambient Temperature | TA | -40 | 25 | 85 | °C | 3 | |
| Output Capacitance (rated at required output) | COUT | 0.47 | µF | For maximum load current | 3 | ||
| VIN to GND | VIN | 6 | V | 3 | |||
| FB, SHDN to GND | -0.3 | V | Maximum printed as VIN + 0.3 V | 3 | |||
| SW to GND | -0.3 | 35 | V | 3 | |||
| Lead Soldering Temperature | 300 | °C | 10 seconds | 3 | |||
| Junction Temperature | TJ | 150 | °C | 3 | |||
| Storage Temperature | TSTG | -55 | 150 | °C | 3 | ||
| Thermal Resistance (junction to ambient) | RθJA | 210 | °C/W | 3 | |||
| Electrostatic Discharge Protection, HBM | ESD | 2 | kV | HBM, EIA/JESD22-A114B | 3 | ||
| Electrostatic Discharge Protection, CDM | ESD | 1 | kV | CDM, EIA/JESD22-C101-A | 3 |
CAD (KiCad official)
- Symbol:
FAN5333ASX - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
fan5333asx-etched.step/fan5333asx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fan5333asx.step/fan5333asx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (10 pp, sha256
48c0d98df2bf045f, retrieved 2026-10-20, 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).