RT9193-1.8
Manufacturer
Model
RT9193-1.8
Category
The RT9193-1.8 is a compact 1.8V LDO regulator optimized for space-constrained applications requiring stable voltage regulation up to 300mA. Its low dropout characteristic (300mV) and integrated protection features make it suitable for consumer electronics and IoT devices, while extended thermal management ensures reliability in industrial environments. The SOT-23-5 package provides optimal balance between performance and board space efficiency, though current limitations and higher unit cost compared to larger packages should be considered during design tradeoffs.
Reference Pricing
Reference Stock
Specifications
| Dropout Voltage | 35mV |
| Load Regulation | 20mV |
| Operating Temperature Range | -20~+60℃ |
| Output Current | 500mA |
| Output Noise | Not specified |
| Output Voltage Accuracy | +/-1.5% |
| Output Voltage Adjustment Rate | 0.2% |
| PSRR | 75dB |
| Package Type | SOT-23-5 |
| Rated Voltage | 1.8V |
| Transient Response Time | Not specified |
Function And Role
Core Function
300mA fixed 1.8V positive voltage regulator with low dropout (LDO) functionality
Key Characteristics
- Output voltage stability: ±1.5% at full load
- Dropout voltage: 300mV at 300mA output current
- Low ESR input capacitor requirement
- Integrated overcurrent protection
- Enable pin for output control
Application Domains
Basic Scenarios
- Consumer electronics power supply units
- IoT sensor node power management
- Portable medical devices
- Wireless communication modules
Extended Scenarios
- Industrial automation control systems
- Automotive infotainment subsystems
- Military embedded computing platforms
- Optical communication transceivers
Precautions
| Soldering | Use 0.1mm pitch solder mask alignment for SOT-23-5 package |
| Current Limit | Max continuous current: 300mA (derate to 150mA above 60°C) |
| Voltage Limit | Input voltage range: 4.5-7V DC |
| Thermal Management | Thermal resistance: 62.5°C/W junction-to-ambient |
| Storage | Store in anti-static bags at 10-40°C with 30-60% relative humidity |
| Risk Warnings |
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Alternative Model Params
- Output voltage range (1.5-3.3V)
- Max output current (500mA+)
- Dropout voltage (50mV typical)
- Package type (SOT-23-6 or QFN-16)
- Input voltage range (4.5-24V)
Design Recommendations
| Layout | Keep input/output vias within 2mm of package |
| Thermal | Use 0.3mm thick copper for heat dissipation traces |
| Compatibility | Pair with 10μF ceramic capacitors on input/output |
| Testing | Verify PSRR >40dB at 100Hz/1MHz with 0.1μF bypassing |
Market Positioning
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| Weaknesses |
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