component
XL1509E-3.3
Public Made by Adomby adom
UMW DC-DC Converters, ESOP-8. 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
markdownXL1509E-3.3
UMW · DC-DC Converters · ESOP-8
XL1509E-3.3 from UMW, in a ESOP-8. 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 | VIN | power_in | Supply voltage input that operates from 4.5V to 40V DC and should be bypassed to GND with a suitably large capacitor to eliminate input noise. |
| 2 | OUTPUT | power_out | Power switch output (SW) that is the switch node supplying power to the output. |
| 3 | FEEDBACK | input | Feedback input that senses the output voltage through an external resistor divider and regulates it to the 1.23V feedback threshold. |
| 4 | ON/OFF | input | Enable input where driving it low turns the device on and driving it high turns it off; it floats low by default. |
| 5 | GND | power_in | Ground pin that must be laid out outside the Schottky diode to output capacitor ground path to keep switching current spikes from coupling noise into the device. |
| 6 | GND | power_in | Ground pin that must be laid out outside the Schottky diode to output capacitor ground path to keep switching current spikes from coupling noise into the device. |
| 7 | GND | power_in | Ground pin that must be laid out outside the Schottky diode to output capacitor ground path to keep switching current spikes from coupling noise into the device. |
| 8 | GND | power_in | Ground pin that must be laid out outside the Schottky diode to output capacitor ground path to keep switching current spikes from coupling noise into the device. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input operation voltage | VIN | 4.5 | 40 | V | 6 | ||
| Oscillator frequency | FOSC | 117 | 150 | 183 | Khz | 6 | |
| Output voltage (3.3V version) | VOUT | 3.168 | 3.3 | 3.432 | V | VIN=4.75V to 40V, ILOAD=0.2A to 2A | 5 |
| Input voltage | VIN | -0.3 | 45 | V | 4 | ||
| Feedback pin voltage | VFB | -0.3 | V | upper limit printed as VIN | 4 | ||
| ON/OFF pin voltage | VON/OFF | -0.3 | V | upper limit printed as VIN | 4 | ||
| Output switch pin voltage | VOutput | -0.3 | V | upper limit printed as VIN | 4 | ||
| Operating junction temperature | TJ | -40 | 125 | °C | 4 | ||
| Storage temperature | TSTG | -65 | 150 | °C | 4 | ||
| Lead temperature (soldering) | TLEAD | 260 | °C | 10 sec soldering | 4 | ||
| ESD (HBM) | 2000 | V | HBM | 4 | |||
| Thermal resistance, junction to ambient (SOIC8) | RJA | 100 | °C/W | SOIC8 package, junction to ambient, no heatsink, free air; ESOP-8 value not printed | 4 |
CAD (KiCad official)
- Symbol:
XL1509E-3.3 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
xl1509e-3-3-etched.step/xl1509e-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xl1509e-3-3.step/xl1509e-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (15 pp, sha256
bd5713838034a224, retrieved 2026-10-18, 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).