component
XL1509E-ADJ
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-ADJ
UMW · DC-DC Converters · ESOP-8
XL1509E-ADJ 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 pin; XL1509 operates from a 4.5V to 40V DC input, and VIN should be bypassed to GND with a suitably large capacitor to eliminate input noise. |
| 2 | OUTPUT | output | Power switch output pin (SW) is the switch node that supplies power to the output. |
| 3 | FEEDBACK | input | Feedback pin senses the output voltage through an external resistor divider and regulates it, with a feedback threshold voltage of 1.23V. |
| 4 | ON/OFF | input | Enable pin: drive low to turn the device on and high to turn it off, and it floats to the default low state. |
| 5 | GND | power_in | Ground pin; layout must place it outside the Schottky diode to output capacitor ground path so switching current spikes do not induce voltage noise into the IC. |
| 6 | GND | power_in | Ground pin; layout must place it outside the Schottky diode to output capacitor ground path so switching current spikes do not induce voltage noise into the IC. |
| 7 | GND | power_in | Ground pin; layout must place it outside the Schottky diode to output capacitor ground path so switching current spikes do not induce voltage noise into the IC. |
| 8 | GND | power_in | Ground pin; layout must place it outside the Schottky diode to output capacitor ground path so switching current spikes do not induce voltage noise into the IC. |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage (adjustable version) | VOUT | 1.193 | 1.23 | 1.267 | V | TA=25°C; VIN=4.5V to 40V; ILOAD=0.2A to 2A; VIN=12V, VOUT=3V, IOUT=2A | 5 |
| Oscillator frequency | FOSC | 117 | 150 | 183 | Khz | VFB=0 | 6 |
| Input operation voltage | VIN | 4.5 | 40 | V | 6 | ||
| Input voltage (absolute maximum) | VIN | -0.3 | 45 | V | 4 | ||
| Feedback pin voltage (absolute maximum) | VFB | -0.3 | V | Upper limit printed as VIN | 4 | ||
| ON/OFF pin voltage (absolute maximum) | VON/OFF | -0.3 | V | Upper limit printed as VIN | 4 | ||
| Output switch pin voltage (absolute maximum) | 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 | Soldering, 10 sec | 4 | ||
| ESD (HBM) | 2000 | V | HBM | 4 | |||
| Thermal resistance, junction to ambient | RθJA | 100 | °C/W | Junction to ambient, no heatsink, free air; datasheet labels this value SOIC8 | 4 |
CAD (KiCad official)
- Symbol:
XL1509E-ADJ - 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-adj-etched.step/xl1509e-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xl1509e-adj.step/xl1509e-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (15 pp, sha256
bd5713838034a224, retrieved 2026-10-19, 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).