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XL1509A-ADJE1

XLSEMI(芯龙) · DC-DC Converters · SOP-8

XL1509A-ADJE1 from XLSEMI(芯龙), in a SOP-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 Power input pin supporting a DC 4.5V to 50V operating range, with an electrolytic capacitor required in parallel between VIN and GND to eliminate noise.
2 SW output Power switch output pin; SW is the switching node that delivers the output power.
3 FB input Feedback pin that senses the output voltage through an external resistor divider; the reference voltage is 1.23V for the adjustable version.
4 EN input Enable pin that is active low: a high level shuts the device down, and it is low when left floating.
5 GND power_in Ground pin.
6 GND power_in Ground pin.
7 GND power_in Ground pin.
8 GND power_in Ground pin.

Key specifications

Parameter Value
Manufacturer XLSEMI(芯龙)
Package SOP-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
反馈电压 (feedback voltage, ADJ version) VFB 1.212 1.23 1.248 V VIN=12V, VOUT=5.0V, IOUT=0.5A 4
反馈基准电压精度 (feature list) -1.5 1.5 % 1
工作电压 (operating input voltage) VIN 4.5 50 V 5
关机电流 (shutdown current) IS 46 100 uA VEN=2V 5
静态电流 (quiescent current) IQ 1.3 2 mA 注2: ADJ版本 VFB=10V 5
振荡频率 (oscillator frequency) FOSC 135 150 165 KHz 5
开关电流限值 (switch current limit) IL 3 A VFB=0V 5
EN引脚阈值电压 高电平(关断) (EN high threshold) VEN_H 1.4 V 5
EN引脚阈值电压 低电平(开启) (EN low threshold) VEN_L 0.8 V 5
饱和压降 (saturation voltage) VCE 1.1 1.3 V VFB=0V, IOUT=2A 5
最大占空比 (maximum duty cycle) DMAX 100 % VFB=0V 5
输入电压 (absolute maximum) VIN -0.3 60 V 3
反馈引脚电压 (absolute maximum) VFB -0.3 20 V 3
使能引脚电压 (absolute maximum) VEN -0.3 7 V 3
输出开关引脚电压 (absolute maximum) VSW -0.3 V Printed upper limit is VIN 3
操作结温 (operating junction temperature) TJ -40 150 oC 3
贮存温度范围 (storage temperature) TSTG -65 150 oC 3
引脚温度 (lead temperature, soldering) TLEAD 260 oC 焊接10秒 3
ESD (HBM) ESD 8000 V HBM, printed as >8000 3
热阻结到环境 (junction-to-ambient thermal resistance, SOP8) RJA 100 oC /W 结到环境,无外部散热片 3
环境工作温度范围 (ambient operating temperature, grade 1) -40 125 ℃ 温度等级1级 (feature list) 1
推荐工作电压 (recommended operating voltage) 4.5 50 V 推荐工作电压 (feature list) 1
EN引脚电流 (EN pin current) IEN 5 uA VEN=2.0V 5
热关断温度 (thermal shutdown temperature) TSD 180 ℃ 5
热关断迟滞 (thermal shutdown hysteresis) TD 50 ℃ 5

CAD (KiCad official)

  • Symbol: XL1509A-ADJE1
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: xl1509a-adje1-etched.step / xl1509a-adje1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xl1509a-adje1.step / xl1509a-adje1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: XLSEMI(芯龙) datasheet (17 pp, sha256 a4865b1dcf3ac763, retrieved 2026-11-05, 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF