HT7550
Manufacturer
Model
HT7550
Category
The TWGMC HT7550 is a compact 150mA LDO regulator delivering stable 5V output from 18-28V input, optimized for low-power portable devices. Its SOT-23 package and -40°C to +85°C operation make it suitable for IoT sensors, wearables, and battery-powered systems, with proper thermal management ensuring reliability in extended temperature ranges.
Reference Pricing
Reference Stock
Specifications
| Dropout Voltage | 25mV |
| Load Regulation | +/-0.6% |
| Operating Temperature Range | -40°C to 85°C |
| Output Current | 100mA |
| Output Noise | 50μVRMS |
| Output Voltage Accuracy | +/-1.0% |
| Output Voltage Regulation | +/-0.2% |
| PSRR | 60dB |
| Package Type | SOT-23 |
| Rated Voltage | 5.0V |
| Transient Response Time | 10μs |
Function And Role
Core Function
Fixed 5V positive output linear low drop-out (LDO) regulator
Key Characteristics
- 150mA output current rating
- 28V input voltage range
- SOT-23 package
- ROHS compliance
- Operating temperature -40°C to +85°C
Application Domains
Basic Scenarios
- Low-power IoT sensors
- Portable electronic devices
- Consumer electronics
- Medical devices
Extended Scenarios
- Wireless communication modules
- Solar-powered systems
- Battery management circuits
- Automotive electronic controls
Precautions
| Soldering | Use fine pitch soldering tools and avoid thermal shock |
| Current Limit | Max continuous current 150mA (200mA peak) |
| Voltage Limit | Input voltage 18-28V, output voltage 4.5-5.5V |
| Thermal Management | Max junction temperature +150°C, require proper heat dissipation |
| Storage | Store in <10% relative humidity, avoid static discharge |
| Risk Warnings |
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Alternative Model Params
- Output current (≥120mA)
- Input voltage range (18-30V)
- Output voltage stability (±2%)
- Package type (SOT-23/SOT-258)
Design Recommendations
| Layout | Maintain ≥3mm trace width for power paths |
| Thermal | Use 0805 metal-film resistors for thermal stability |
| Compatibility | Pair with 10μF ceramic capacitor at input/output |
| Testing | Verify output ripple <50mV under 100mA load |
Market Positioning
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| Weaknesses |
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