HT7333-1
Manufacturer
Model
HT7333-1
Category
The HT7333-1 is a compact 3.3V LDO regulator optimized for low-power applications, offering stable output up to 250mA within a wide temperature range. Its SOT-89 package and low dropout voltage make it suitable for consumer electronics and industrial systems requiring reliable power management. Proper thermal design and input voltage compliance are critical to ensure longevity.
Reference Pricing
Reference Stock
Specifications
| Dropout Voltage | Vout+2~30V |
| Load Regulation | +/-90mV |
| Operating Temperature Range | -40~+85°C |
| Output Current | 250mA |
| Output Noise | Not specified |
| Output Voltage Accuracy | +/-3% |
| Output Voltage Adjustment Rate | +/-45mV |
| PSRR | Not specified |
| Package Type | SOT-89 |
| Rated Voltage | 3.3V |
| Transient Response Time | Not specified |
Function And Role
Core Function
Provide a stable 3.3V output with low dropout voltage
Key Characteristics
- Input voltage range: 15V
- Output current: 250mA
- Operating temperature: -30°C to +85°C
- SOT-89 package
Application Domains
Basic Scenarios
- Consumer electronics (IoT devices, sensors)
- Low-power communication modules
Extended Scenarios
- Automotive electronic systems
- Medical devices requiring stable power
- Industrial control units
Precautions
| Soldering | Use reflow soldering at 240-260°C with 20-30s peak time |
| Current Limit | Max continuous output current: 250mA (peak 500mA for 1 second) |
| Voltage Limit | Input voltage must not exceed 15V |
| Thermal Management | Thermal resistance: 50°C/W, ensure proper heat dissipation |
| Storage | Store in <10% relative humidity, <40°C environment |
| Risk Warnings |
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Alternative Model Params
- Output voltage tolerance (±2%)
- Input voltage range (9-15V)
- Package type (SOT-23-6 or SOT-89 equivalent)
- PSRR (≥60dB at 1MHz)
Design Recommendations
| Layout | Place decoupling capacitors within 1mm of Vout pins |
| Thermal | Use thermal vias or copper pours for heat dissipation |
| Compatibility | Verify with 3.3V microcontroller reference designs |
| Testing | Test under worst-case temperature (0°C and +85°C) |
Market Positioning
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| Weaknesses |
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