XL2596S-5.0E1 SMD DC-DC Converters 40V 3A TO-263-5
The XL2596S-5.0E1, manufactured by XLSEMI, is a high-performance, fixed 5V output, step-down (buck) DC-DC converter designed for efficient power conversion. It operates over a wide input voltage range of 4.5V to 40V and can deliver up to 3A of output current. Featuring a fixed switching frequency of 150KHz, the converter provides excellent line and load regulation, low ripple, and high efficiency, making it suitable for applications requiring a stable 5V power supply. The device includes built-in thermal shutdown and current limit protection, along with an enable pin for power management, all housed in a compact TO-263-5 package.
Features:
- Wide 4.5V to 40V Input Voltage Range.
- 3.3V,5V,12V, and adjustable versions.
- Output Adjustable from 1.23V to 37V.
- Maximum Duty Cycle 100%.
- Minimum Drop Out 1.5V.
- Fixed 150KHz Switching Frequency.
- 3A Constant Output Current Capability.
- Internal Optimize Power Transistor.
- High efficiency.
- Excellent line and load regulation.
- TTL shutdown capability.
- ON/OFF pin with hysteresis function.
- Built in thermal shutdown function.
- Built in current limit function.
- Built in second current limit function.
- Available in TO-220,TO-263 packages.
Pinout:

Specifications:
| Attribute | Value | |
|---|---|---|
| Category | Power Management ICs/DC-DC Converters | |
| Datasheet | XLSEMI XL2596S-5.0E1 | |
| RoHS | – | |
| Package | TO-263-5 | |
| Manufacturer | XLSEMI | |
| Brand Category | Made In Asia Brands | |
| Packaging | Cut Tape | |
| Function | Step-Down | |
| Output Configuration | Positive | |
| Topology | Buck | |
| Output Type | Fixed | |
| Number of Outputs | 1 | |
| Voltage – Input (Min) | 4.5V | |
| Voltage – Input (Max) | 40V | |
| Voltage – Output (Min/Fixed) | 5V | |
| Voltage – Output (Max) | – | |
| Current – Output | 3A | |
| Frequency – Switching | 150kHz | |
| Synchronous Rectifier | No |
Applications:
- LCD monitors and TVs.
- Digital photo frames.
- Set-top boxes and media devices.
- ADSL/Cable modems and routers.
- Telecom and networking equipment.
Package Include:
- 1 x XL2596S-5.0E1 SMD



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