component
XL9028
Public Made by Adomby adom
XLSEMI DC-DC Converters, TO-263-7L. 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
markdownXL9028
XLSEMI · DC-DC Converters · TO-263-7L
XL9028 from XLSEMI, in a TO-263-7L. 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 | CSP | input | Current-sense positive input, used with CSN to sense the output current across the external sense resistor (RCS) for constant-current regulation. |
| 2 | CSN | input | Current-sense negative input, paired with CSP to measure the voltage across the external current-sense resistor. |
| 3 | GND | power_in | Ground pin for the device. |
| 4 | SW | output | Power switch output and switch node of the converter; it is the output-power switching node, and the metal tab is also connected to SW. |
| 5 | FB | input | Feedback input that senses the output voltage through an external resistor divider; the reference voltage is 1.25V. |
| 6 | VC | power_out | Internal voltage regulator bypass pin, requiring a 1uF capacitor connected between VIN and VC. |
| 7 | VIN | power_in | Power input supporting a wide operating range of DC 5V to 45V, with an electrolytic capacitor required in parallel between VIN and GND to suppress noise. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XLSEMI |
| Package | TO-263-7L |
| Category | Power Management (PMIC) |
| Pins | 7 |
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 | 1.225 | 1.25 | 1.275 | V | VIN=12V, VOUT=5.0V, IOUT=0.5A | 4 |
| Operating voltage | VIN | 5 | 45 | V | 4 | ||
| Quiescent current | IQ | 2.3 | 5 | mA | VFB=2V | 4 | |
| Oscillator frequency | FOSC | 96 | 120 | 144 | KHz | 4 | |
| Switch current limit | IL | 6 | A | VFB=0V | 4 | ||
| High-side on-resistance | RDS(ON)H | 38 | mΩ | 4 | |||
| Low-side on-resistance | RDS(ON)L | 50 | mΩ | 4 | |||
| Thermal shutdown temperature | TSD | 170 | ℃ | 4 | |||
| Thermal shutdown hysteresis | TD | 50 | ℃ | 4 | |||
| Maximum duty cycle | DMAX | 100 | % | 4 | |||
| Input voltage | VIN | -0.3 | 50 | V | 3 | ||
| Internal regulator bypass pin voltage | VC | -0.3 | V | upper limit printed as VIN | 3 | ||
| Current sense positive pin voltage | VCSP | -0.3 | V | upper limit printed as VIN | 3 | ||
| Current sense negative pin voltage | VCSN | -0.3 | V | upper limit printed as VIN | 3 | ||
| Feedback pin voltage | VFB | -0.3 | 7 | V | 3 | ||
| Switch pin voltage | VSW | -0.3 | V | upper limit printed as VIN | 3 | ||
| Thermal resistance junction to ambient | RJA | 30 | oC /W | TO263-7L, junction to ambient, no external heatsink | 3 | ||
| Operating junction temperature | TJ | -40 | 150 | oC | 3 | ||
| Storage temperature range | TSTG | -65 | 150 | oC | 3 | ||
| Lead temperature (soldering) | TLEAD | 260 | oC | soldering 10 s | 3 | ||
| ESD HBM rating | ESD (HBM) | 6000 | V | HBM; datasheet prints '>6000' | 3 | ||
| Ambient operating temperature | -40 | 125 | ℃ | Grade 1 ambient operating range, per features list | 1 |
CAD (KiCad official)
- Symbol:
XL9028 - Footprint:
Package_TO_SOT_SMD:TO-263-7_TabPin4 - 3D model: TO-263-7L (KiCad packages3D, STEP)
- 3D model files:
xl9028-etched.step/xl9028-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xl9028.step/xl9028.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XLSEMI datasheet (14 pp, sha256
fbd60e981c51df07, retrieved 2026-10-18, tier: manufacturer) - 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).