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XL1509-5.0E1 SOP-8 5V Step-Down Switching Voltage Regulator IC (5pcs)
XL1509-5.0E1 SOP-8 5V Step-Down Switching Voltage Regulator IC (5pcs)
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XL1509-5.0E1 — SOP-8 5V Fixed Step-Down Switching Regulator IC
The XL1509-5.0E1 is a 150kHz fixed-frequency PWM buck (step-down) switching regulator with a built-in power switch, capable of delivering up to 2A output current with a fixed 5V output. In SOP-8 SMD package, it's ideal for compact PCB power supply designs requiring efficient 5V regulation from 8–40V input. This listing provides 5 pieces.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | XL1509-5.0E1 |
| Package | SOP-8 |
| Output Voltage | 5V (fixed) |
| Input Voltage Range | 8V – 40V |
| Output Current | 2A (max) |
| Switching Frequency | 150kHz |
| Efficiency | Up to 88% |
| Feedback Voltage | 1.25V (internal) |
| Dropout | N/A (switching, not linear) |
| Operating Temperature | -40°C to +85°C |
| Quantity | 5 PCS |
Why Choose XL1509-5.0E1?
- ✅ Integrated power switch — minimal external components (inductor + diode + capacitors only)
- ✅ Fixed 5V output — no feedback resistor network needed, simplifies PCB design
- ✅ Wide 8–40V input — works from 12V, 24V, or automotive 12V/24V systems
- ✅ 88% efficiency — far superior to LM7805 linear regulator
- ✅ SOP-8 SMD — compact footprint for space-constrained PCB designs
Compatible With / Works With
- Arduino UNO/Nano 5V supply from 12V–24V industrial power
- ESP8266 / ESP32 5V supply (with AMS1117-3.3 for 3.3V)
- Raspberry Pi 5V supply from 12V automotive or solar
- Industrial sensor 5V supply from 24V DIN rail power
- External components: Schottky diode (SS34, 1N5822), inductor (100μH), capacitors
Typical Applications
- Industrial 5V Supply — 24V DIN rail to 5V for PLC I/O modules
- Automotive 5V — 12V/24V vehicle power to 5V for embedded systems
- Solar 5V Output — 12V–24V panel to 5V USB charging
- PCB Power Module — compact on-board 5V regulator for custom PCB designs
- LED Driver Supply — 12V to 5V for WS2812B addressable LED strips
Typical Application Circuit
Minimum external components required:
- L1: 100μH inductor (rated ≥2A)
- D1: Schottky diode SS34 or 1N5822 (40V, 3A)
- Cin: 100μF / 50V electrolytic
- Cout: 100μF / 16V electrolytic + 10μF ceramic
FAQ
Q: Can XL1509-5.0E1 be used for 3.3V output?
A: This variant is fixed at 5V. For 3.3V, use XL1509-3.3E1 (fixed 3.3V) or XL1509-ADJ (adjustable with external resistors).
Q: What inductor value should I use?
A: 100μH is recommended for most applications. For higher switching frequency designs or lower ripple, use 68μH–150μH. Ensure the inductor is rated for at least 2A saturation current.
Q: Is XL1509 compatible with LM2596?
A: Both are 150kHz buck regulators with similar pinouts, but XL1509 is in SOP-8 (SMD) while LM2596 is in TO-263/DIP. XL1509 is not a direct pin-compatible replacement for LM2596 on existing PCBs.
Package Contents
- 5× XL1509-5.0E1 SOP-8 5V Step-Down Switching Regulator IC
