HT7330
Manufacturer
Model
HT7330
Category
The HT7330 is a cost-effective 3V/250mA LDO regulator in a compact SOT-23-3L package, suitable for low-power IoT and portable devices. It operates from 12V input with a drop-out voltage below 0.3V, features -25°C to +70°C operation, and requires careful thermal management for sustained high current. Its RoHS compliance and competitive pricing make it ideal for mass production of consumer electronics, but lacks adjustable voltage and advanced protection features.
Reference Pricing
Reference Stock
Specifications
| Dropout Voltage | 170mV |
| Load Regulation | 45mV |
| Operating Temperature Range | -25~70℃ |
| Output Current | 150mA |
| Output Noise | Not specified |
| Output Voltage Accuracy | ±3% |
| Output Voltage Regulation | 0.2% /V |
| PSRR | Not specified |
| Package Type | SOT-23-3L |
| Rated Voltage | 12V |
| Transient Response Time | Not specified |
Function And Role
Core Function
Provide a fixed 3V positive output with a maximum current of 250mA using a low-drop-out (LDO) topology
Key Characteristics
- Input voltage range: 12V
- Output voltage stability: 3V
- Operating temperature: -25°C to +70°C
- Package: SOT-23-3L
- PSRR (Power Supply Rejection Ratio): unspecified
Application Domains
Basic Scenarios
- Low-power IoT devices
- Portable consumer electronics
- Wearable health monitors
Extended Scenarios
- Automotive electronic control units
- Medical device power management
- Industrial sensor nodes
Precautions
| Soldering | Maximum reflow soldering temperature: 240°C (2 seconds max per pad) |
| Current Limit | Continuous output current not to exceed 250mA |
| Voltage Limit | Input voltage must be ≥12V, output ≤3.6V |
| Thermal Management | Thermal resistance: 62.5°C/W (uncooled PCB) |
| 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 compatibility (SOT-23-3L)
- Drop-out voltage (<0.3V at 250mA)
Design Recommendations
| Layout | Keep input/output traces ≥2mm apart to minimize noise |
| Thermal | Use 0603 metal-film resistors for current sensing |
| Compatibility | Matches with 3.3V/5V LDOs in dual-output designs |
| Testing | Verify output stability at 0°C to +85°C temperature cycle |
Market Positioning
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| Weaknesses |
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