XL1509-5.0E1
Manufacturer
Model
XL1509-5.0E1
Category
The XL1509-5.0E1 is a cost-effective step-down DC-DC converter optimized for 5V output applications, featuring a wide input range (4.5V~40V) and 2A output capability. Its SOIC-8 package and built-in switch tubes enable compact designs in consumer electronics, automotive, and industrial systems. Proper thermal management and adherence to voltage/current limits are critical for reliable operation.
Reference Pricing
Reference Stock
Specifications
| Efficiency | 82% |
| Input Voltage Range | 4.5V to 40V |
| Load Regulation | Excellent |
| On-Resistance | Not specified |
| Operating Temperature Range | -40°C to 85°C |
| Output Current | 2A |
| Output Voltage | 5V |
| Package Type | SOIC-8 |
| Rated Voltage | 5V |
| Ripple Voltage | Not specified |
| Switching Frequency | 150KHz |
| Switching Loss | Not specified |
| Thermal Resistance | 100°C/W |
Function And Role
Core Function
Step-down DC-DC converter providing fixed 5V output with 2A current capability
Key Characteristics
- Input voltage range: 4.5V~40V
- Output voltage: 5V (fixed)
- Output current: 2A
- Switching frequency: 150kHz
- SOIC-8 package
- Built-in switch tubes
- Quiescent current: 2mA
- Operating temperature: -40°C~+85°C
Application Domains
Basic Scenarios
- Consumer electronics (IoT devices, wearables)
- Automotive voltage regulation
- Industrial control systems
Extended Scenarios
- Renewable energy systems (solar charge controllers)
- Medical devices requiring stable power
- Automotive infotainment and lighting
Precautions
| Soldering | Use reflow soldering with peak temperature <250°C; avoid mechanical stress post-soldering |
| Current Limit | Max continuous output current 2A; peak current <4A for 10ms |
| Voltage Limit | Input voltage must be within 4.5V~40V; output tolerance ±1.5% at 25°C |
| Thermal Management | Thermal resistance: junction-to-ambient 40°C/W; recommend heat sinks for >1A continuous operation |
| Storage | Store in <10% RH environment; max storage temperature 85°C |
| Risk Warnings |
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Alternative Model Params
- Output voltage (5V±1.5%)
- Input voltage range (4.5V~40V)
- Output current (2A max)
- Switching frequency (150kHz)
- Package (SOIC-8)
Design Recommendations
| Layout | Maintain 10mil trace width for VCC and GND planes; use decoupling capacitors (10μF X5R) near output pins |
| Thermal | Thermal pad not available; use external heatsink with >10W thermal dissipation capacity |
| Compatibility | Pairs with XLSEMI input filters (part #C61062) for EMI compliance |
| Testing | Verify ripple <50mV (20MHz bandwidth) under max load; perform 1000 hours MTBF testing |
Market Positioning
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